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1/2 Counterbore Screws
12-point Flange Screws, Counterbore Screws, Ferry Head Cap Screws or Counterbore Screws, feature a 12 point head and a flanged bearing surface. Usually fully threaded, the 12-point design provides for higher tightening torque, without edge rounding and they are covered under ASME Standard B18.2.1
2,425 12 Point Flange Screw (CounterBore), showing 200, (click on any line for more information)
| Search Results Sponsored by Metric Threaded Products, Inc., your source for 12 Point Flange Screws. For more results, visit www.metric-threaded.com | ||||||||
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| Supplier | Loc | Type | Material | Finish | Size | Description | Qty | |
| MTP | CA | 12 Point Flange Screw (CounterBore) | Steel | Zinc/Clear | 1/2-20 x 2 1/2 | 1/2-20 x 2 1/2 alloy zn 12 pt flange screws | 400 |
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| MTP | CA | 12 Point Flange Screw (CounterBore) | Steel | Zinc/Clear | 1/2-20 x 1 1/4 | 1/2-20 x 1 1/4 alloy zn 12 pt flange screws | 200 |
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| MTP | CA | 12 Point Flange Screw (CounterBore) | Steel | Zinc/Yellow | 1/2-20 x 7/8 | 1/2-20x7/8 alloy yzn 12 point flange bolt | stock |
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| MTP | CA | 12 Point Flange Screw (CounterBore) | Steel | Black Oxide | 1/2-20 x 1 1/4 | 1/2-20x1 1/4 alloy blk 12 pt flange screws | stock |
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| Buy Counterbore Screws from one of our FCH Network Members | ||||||||
| Cal Fastenrs | CA | 12 Point Flange Screw (CounterBore) | Steel | Plain | 1/2-20 x 1 | - 12-pt fl/b | 50 |
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| Cal Fastenrs | CA | 12 Point Flange Screw (CounterBore) | Steel | Plain | 1/2-13 x 2 | 12-pt fl/b - 12-pt fl/b | 100 |
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| Cal Fastenrs | CA | 12 Point Flange Screw (CounterBore) | Steel | Plain | 1/2-13 x 3 1/2 | 12-pt fl/b | 100 |
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| R&S Indus | OR | 12 Point Flange Screw (CounterBore) | Steel | Plain | 1/2-13 x 2 | 1/2-13 x 2 12 pt flange screw alloy steel | 32 |
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| R&S Indus | OR | 12 Point Flange Screw (CounterBore) | Steel | Plain | 1/2-20 x 3 | 1/2-20 x 3 12 pt flange screw alloy steel | 12 |
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| R&S Indus | OR | 12 Point Flange Screw (CounterBore) | Steel | Plain | 1/2-20 x 2 | 1/2-20 x 2 12 pt flange screw alloy steel (170 000 psi) | 25 |
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| R&S Indus | OR | 12 Point Flange Screw (CounterBore) | Steel | Plain | 1/2-13 x 3 | 1/2-13 x 3 12 pt flange screw alloy steel | 73 |
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| R&S Indus | OR | 12 Point Flange Screw (CounterBore) | Steel | Plain | 1/2-13 x 2 1/2 | 1/2-13 x 2-1/2 12 pt flange screw alloy steel | 140 |
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| R&S Indus | OR | 12 Point Flange Screw (CounterBore) | Steel | Plain | 1/2-20 x 1 1/2 | 1/2-20 x 1-1/2 12 pt flange screw alloy steel | 9 |
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| Jackson | MS | 12 Point Flange Screw (CounterBore) | Steel | Plain | 1/2-13 x 1 | nc ferry c/s | 50 |
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| Jackson | MS | 12 Point Flange Screw (CounterBore) | Steel | Plain | 1/2-13 x 1 1/4 | nc ferry c/s | 50 |
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| Jackson | MS | 12 Point Flange Screw (CounterBore) | Steel | Plain | 1/2-13 x 3 | ferry c/s | 1 |
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| Jackson | MS | 12 Point Flange Screw (CounterBore) | Steel | Plain | 1/2-13 x 2-1/4 nc ferry head c/s plain | 16 |
| |
| Weaver | WA | 12 Point Flange Screw (CounterBore) | Grade 8 | Plain | 1/2-13 x 1 | 1/2-13x1 gr8 12pt hd flange bolt plain | 125 |
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| Weaver | WA | 12 Point Flange Screw (CounterBore) | Grade 8 | Plain | 1/2-13 x 1 1/4 | 1/2-13x1 1/4 gr8 12pt hd flange bolt plain | 125 |
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| Weaver | WA | 12 Point Flange Screw (CounterBore) | Grade 8 | Plain | 1/2-13 x 1 1/2 | 1/2-13x1 1/2 gr8 12pt hd flange bolt plain | 196 |
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| Weaver | WA | 12 Point Flange Screw (CounterBore) | Grade 8 | Plain | 1/2-13 x 2 | 1/2-13x2 gr8 12pt hd flange bolt plain | 150 |
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| Weaver | WA | 12 Point Flange Screw (CounterBore) | Grade 8 | Plain | 1/2-13 x 2 1/2 | 1/2-13x2 1/2 gr8 12pt hd flange bolt plain | 100 |
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| Weaver | WA | 12 Point Flange Screw (CounterBore) | Grade 8 | Plain | 1/2-20 x 1 1/4 | 1/2-20x1 1/4 gr8 12pt hd flange bolt plain | 25 |
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| Weaver | WA | 12 Point Flange Screw (CounterBore) | Grade 8 | Plain | 1/2-20 x 1 1/2 | 1/2-20x1 1/2 gr8 12pt hd flange bolt plain | 25 |
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| Weaver | WA | 12 Point Flange Screw (CounterBore) | Grade 8 | Plain | 1/2-20 x 2 | 1/2-20x2 gr8 12pt hd flange bolt plain | 25 |
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| Weaver | WA | 12 Point Flange Screw (CounterBore) | Grade 8 | Plain | 1/2-20 x 2 1/2 | 1/2-20x2 1/2 gr8 12pt hd flange bolt plain | 25 |
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| TownCountry | AR | 12 Point Flange Screw (CounterBore) | Steel | Plain | 1/2 x 13/64 | adjustable counterbore style #5 1/2 shank 4 1/2 oal | 1 |
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| Century | FL | 12 Point Flange Screw (CounterBore) | Steel | Plain | 1/2 | ms21250-04008 bolt (BOLT) (BOLT) | 10 |
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| Jackson | MS | 12 Point Flange Screw (CounterBore) | Steel | Plain | 1/2-20 x 1 | nf ferry c/s | 15 |
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| Jackson | MS | 12 Point Flange Screw (CounterBore) | Steel | Plain | 1/2-20 x 1 1/2 | nf ferry c/s | 15 |
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| Jackson | MS | 12 Point Flange Screw (CounterBore) | Steel | Plain | 1/2-13 x 4 1/2 | 1/2-13x4-1/2 ferry c/s | 22 |
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| Jackson | MS | 12 Point Flange Screw (CounterBore) | Steel | Plain | 1/2-20 x 2 | nf ferry c/s | 23 |
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| Jackson | MS | 12 Point Flange Screw (CounterBore) | Steel | Plain | 1/2-13 x 2 | ferry c/s | 42 |
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| Jackson | MS | 12 Point Flange Screw (CounterBore) | Steel | Plain | 1/2-20 x 1 3/4 | nf ferry c/s | 39 |
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| Jackson | MS | 12 Point Flange Screw (CounterBore) | Steel | Plain | 1/2-20 x 2 1/2 | nf ferry c/s | 64 |
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| Jackson | MS | 12 Point Flange Screw (CounterBore) | Steel | Plain | 1/2-13 x 1 3/4 | nc ferry c/s | 182 |
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| Jackson | MS | 12 Point Flange Screw (CounterBore) | Steel | Plain | 1/2-13 x 1 1/2 | nc ferry c/s | 11 |
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| Hayes | CA | 12 Point Flange Screw (CounterBore) | Steel | Plain | 1/2-13 x 6 | 1/2-13 x 6 12 pt. ctrbr screw alloy | 15 |
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| Hayes | CA | 12 Point Flange Screw (CounterBore) | Steel | Plain | 1/2-20 x 5 | 1/2-20 x 5 12 pt. ctrbr screw alloy | 35 |
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| Hayes | CA | 12 Point Flange Screw (CounterBore) | Steel | Plain | 1/2-20 x 1 3/4 | 1/2-20 x 1 3/4 12 pt. ctrbr screw alloy | 31 |
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| YANKEE | NH | 12 Point Flange Screw (CounterBore) | Steel | Plain | 1/2-13 x 1.25 | -12-pt flange high strength screw | 72 |
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| NAPPCO | TX | 12 Point Flange Screw (CounterBore) | Grade B7 | Plain | 1/2-13 x 2 | 1/2-13x2 a193 b7 ext flange c/s 12pt | 50 |
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| Endries | WI | 12 Point Flange Screw (CounterBore) | Steel | Plain | 1/2-13 x 1 | 1/2-13x1 alloy stl 170 000 psi 12 point flange screw plain | 150 |
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| Endries | WI | 12 Point Flange Screw (CounterBore) | Steel | Plain | 1/2-13 x 3 1/2 | 1/2-13x3-1/2 alloy stl 170 000 psi 12 point flange screw plain | 160 |
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| BHAM | AL | 12 Point Flange Screw (CounterBore) | Steel | Plain | 1/2-13 x 1 3/4 | 1/2-13 x 1 3/4 12 pt flangee counterbore bl | | 1166 |
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| Jackson | MS | 12 Point Flange Screw (CounterBore) | Steel | Plain | 1/2-13 x 2 3/4 | nc ferry c/s | 50 |
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| GLF | OH | 12 Point Flange Screw (CounterBore) | Superalloy (Inconel, Hastelloy, Alloy 20) | Plain | 1/2-13 x 2 1/2 | 1/2-13x2-1/2 12-pt flange bolt 17-4 ph s/s b18.2.1 () () () | 152 |
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| GLF | OH | 12 Point Flange Screw (CounterBore) | Grade 8 | Plain | 1/2-13 x 3 | 1/2-13x3 hex cap-partialthread-grade 8-12 point-plain b18.2.1 () () () | 6 |
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| MTP | CA | 12 Point Flange Screw (CounterBore) | Steel | Zinc/Clear | 1/2-20 x 2 1/2 | 1/2-20 x 2 1/2 alloy zn 12 pt flange screws | 400 |
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| MTP | CA | 12 Point Flange Screw (CounterBore) | Steel | Zinc/Clear | 1/2-20 x 1 1/4 | 1/2-20 x 1 1/4 alloy zn 12 pt flange screws | 200 |
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| MTP | CA | 12 Point Flange Screw (CounterBore) | Steel | Black Oxide | 1/2-13 x 2 1/2 | 12 pt flange screw alloy | 100 |
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| MTP | CA | 12 Point Flange Screw (CounterBore) | Steel | Black Oxide | 1/2-13 x 2 1/4 | 12 pt flange screw alloy | 100 |
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| MTP | CA | 12 Point Flange Screw (CounterBore) | Steel | Black Oxide | 1/2-13 x 1 3/4 | 12 pt flange screw alloy | 3,597 |
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| MTP | CA | 12 Point Flange Screw (CounterBore) | Steel | Black Oxide | 1/2-13 x 1 1/4 | 12 pt flange screw alloy | 100 |
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| MTP | CA | 12 Point Flange Screw (CounterBore) | Steel | Black Oxide | 1/2-13 x 1 | 12 pt flange screw alloy | 100 |
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| MTP | CA | 12 Point Flange Screw (CounterBore) | Steel | Black Oxide | 1/2-13 x 1 1/2 | 12 pt flange screw alloy | 100 |
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| MTP | CA | 12 Point Flange Screw (CounterBore) | Steel | Black Oxide | 1/2-13 x 2 | 12 pt flange screw alloy | 100 |
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| MTP | CA | 12 Point Flange Screw (CounterBore) | Steel | Black Oxide | 1/2-13 x 3 1/4 | 12 pt flange screw alloy | 100 |
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| MTP | CA | 12 Point Flange Screw (CounterBore) | Steel | Black Oxide | 1/2-13 x 2 3/4 | 12 pt flange screw alloy | 100 |
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| MTP | CA | 12 Point Flange Screw (CounterBore) | Steel | Black Oxide | 1/2-13 x 4 | 12 pt flange screw alloy | 200 |
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| MTP | CA | 12 Point Flange Screw (CounterBore) | Steel | Black Oxide | 1/2-13 x 3 1/2 | 12 pt flange screw alloy | 100 |
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| MTP | CA | 12 Point Flange Screw (CounterBore) | Steel | Black Oxide | 1/2-13 x 3 | 12 pt flange screw alloy | 2,930 |
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| Ababa | CA | 12 Point Flange Screw (CounterBore) | Steel | Plain | 1/2-13 x 2 | 1/2-13 x 2 12 point cap screw alloy b18.2.1 | 35 |
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| Ababa | CA | 12 Point Flange Screw (CounterBore) | Steel | Plain | 1/2-13 x 4 | 1/2-13 x 4 12 point cap screw alloy b18.2.1 | 15 |
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| Ababa | CA | 12 Point Flange Screw (CounterBore) | Steel | Plain | 1/2-20 x 1 | 1/2-20 x 1 12 point cap screw alloy b18.2.1 | 94 |
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| Ababa | CA | 12 Point Flange Screw (CounterBore) | Steel | Plain | 1/2-20 x 1 1/4 | 1/2-20 x 1 1/4 12 point cap screw alloy b18.2.1 | 68 |
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| Ababa | CA | 12 Point Flange Screw (CounterBore) | Steel | Plain | 1/2-20 x 1 1/2 | 1/2-20 x 1 1/2 12 point cap screw alloy b18.2.1 | 42 |
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| Ababa | CA | 12 Point Flange Screw (CounterBore) | Steel | Plain | 1/2-20 x 1 3/4 | 1/2-20 x 1 3/4 12 point cap screw alloy b18.2.1 | 70 |
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| Ababa | CA | 12 Point Flange Screw (CounterBore) | Steel | Plain | 1/2-20 x 2 1/4 | 1/2-20 x 2 1/4 12 point cap screw alloy b18.2.1 | 59 |
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| Ababa | CA | 12 Point Flange Screw (CounterBore) | Steel | Plain | 1/2-20 x 2 1/2 | 1/2-20 x 2 1/2 inch 12 point cap screw alloy b18.2.1 | 35 |
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| Ababa | CA | 12 Point Flange Screw (CounterBore) | Steel | Plain | 1/2-20 x 2 3/4 | 1/2-20 x 2 3/4 12 point cap screw alloy b18.2.1 | 15 |
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| Ababa | CA | 12 Point Flange Screw (CounterBore) | Steel | Plain | 1/2-20 x 3 | 1/2-20 x 3 12 point cap screw alloy b18.2.1 | 87 |
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| Ababa | CA | 12 Point Flange Screw (CounterBore) | Steel | Plain | 1/2-20 x 3 1/4 | 1/2-20 x 3 1/4 12 point cap screw alloy b18.2.1 | 60 |
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| Ababa | CA | 12 Point Flange Screw (CounterBore) | Steel | Plain | 1/2-20 x 3 1/2 | 1/2-20 x 3 1/2 12 point cap screw alloy b18.2.1 | 16 |
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| Ababa | CA | 12 Point Flange Screw (CounterBore) | Steel | Plain | 1/2-20 x 4 | 1/2-20 x 4 12 point cap screw alloy b18.2.1 | 65 |
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| Ababa | CA | 12 Point Flange Screw (CounterBore) | Steel | Plain | 1/2-20 x 4 1/2 | 1/2-20 x 4 1/2 12 point cap screw alloy b18.2.1 | 57 |
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| Ababa | CA | 12 Point Flange Screw (CounterBore) | Steel | Plain | 1/2-20 x 5 | 1/2-20 x 5 12 point cap screw alloy b18.2.1 | 21 |
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| Ababa | CA | 12 Point Flange Screw (CounterBore) | Steel | Plain | 1/2-20 x 5 1/2 | 1/2-20 x 5 1/2 inch 12 point cap screw alloy b18.2.1 | 19 |
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| Ababa | CA | 12 Point Flange Screw (CounterBore) | Steel | Plain | 1/2-13 x 1 | 1/2-13 x 1 12 point cap screw alloy b18.2.1 | 36 |
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| Ababa | CA | 12 Point Flange Screw (CounterBore) | Steel | Plain | 1/2-13 x 1 1/2 | 1/2-13 x 1 1/2 12 point cap screw alloy b18.2.1 | 110 |
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| Ababa | CA | 12 Point Flange Screw (CounterBore) | Steel | Plain | 1/2-20 x 2 | 1/2-20 x 2 12 point cap screw alloy b18.2.1 | 10 |
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| CIF | IL | 12 Point Flange Screw (CounterBore) | Steel | Plain | 1/2 x 3 | 1/2x3 12 point flange bolt blank 5/8 oversized body 4140 36-40 rc 160-190 ksi plain (25) (25) (25) () | 25 |
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| CIF | IL | 12 Point Flange Screw (CounterBore) | ASTM A574 | Plain | 1/2-13 x 3 | 1/2-13x3 12 point flange bolt per astm a 574 alloy plain (797) (797) (797) () | 797 |
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| ASMC | IL | 12 Point Flange Screw (CounterBore) | Steel | Plain | 1/2-20 x 1 3/4 | fine 12-point fl/b b18.2.1 | 195 |
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| ASMC | IL | 12 Point Flange Screw (CounterBore) | Steel | Plain | 1/2-13 x 5 | coarse 12-point fl/b b18.2.1 | 25 |
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| ASMC | IL | 12 Point Flange Screw (CounterBore) | Steel | Plain | 1/2-20 x 3 | 1/2-20x3 fine 12-point flange screw alloy pln b18.2.1 | 8 |
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| ASMC | IL | 12 Point Flange Screw (CounterBore) | Steel | Plain | 1/2-20 x 3 1/2 | 1/2-20x3 1/2 fine 12-point flange screw alloy pln | 25 |
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| ASMC | IL | 12 Point Flange Screw (CounterBore) | Steel | Plain | 1/2-13 x 5 1/2 | 1/2-13x5 1/2 coarse 12-point flange screw alloy pln unc | 5 |
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| ASMC | IL | 12 Point Flange Screw (CounterBore) | Steel | Plain | 1/2-20 x 2 3/4 | fine 12-point fl/b | 104 |
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| ASMC | IL | 12 Point Flange Screw (CounterBore) | Steel | Plain | 1/2-20 x 2 1/2 | fine 12-point fl/b | 40 |
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| ASMC | IL | 12 Point Flange Screw (CounterBore) | Steel | Plain | 1/2-20 x 5 1/2 | fine 12-point fl/b | 10 |
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| ASMC | IL | 12 Point Flange Screw (CounterBore) | Steel | Plain | 1/2-13 x 1 1/4 | coarse 12-point fl/b | 44 |
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| ASMC | IL | 12 Point Flange Screw (CounterBore) | Steel | Plain | 1/2-13 x 2 | coarse 12-point fl/b | 31 |
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| ASMC | IL | 12 Point Flange Screw (CounterBore) | Steel | Plain | 1/2-13 x 1 | coarse 12-point fl/b | 130 |
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| ASMC | IL | 12 Point Flange Screw (CounterBore) | Steel | Plain | 1/2-20 x 4 | fine 12-point fl/b | 10 |
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| ASMC | IL | 12 Point Flange Screw (CounterBore) | Steel | Plain | 1/2-13 x 4 | coarse 12-point fl/b | 29 |
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| ASMC | IL | 12 Point Flange Screw (CounterBore) | Steel | Plain | 1/2-13 x 3 1/2 | coarse 12-point fl/b | 35 |
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| ASMC | IL | 12 Point Flange Screw (CounterBore) | Steel | Plain | 1/2-13 x 2 1/4 | coarse 12-point fl/b | 129 |
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| ASMC | IL | 12 Point Flange Screw (CounterBore) | Steel | Plain | 1/2-13 x 2 3/4 | coarse 12-point fl/b | 50 |
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| ASMC | IL | 12 Point Flange Screw (CounterBore) | Steel | Plain | 1/2-13 x 1 1/2 | coarse 12-point fl/b | 46 |
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| Liberty | IL | 12 Point Flange Screw (CounterBore) | Grade 8 | Plain | 1/2-13 x 1 1/4 | 12-pt hex c/s grade8 grade8 | 350 |
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| METRO IND | OH | 12 Point Flange Screw (CounterBore) | Steel | Plain | 1/2-20 x 3 | counterbore sae | 15 |
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| MidStates | MI | 12 Point Flange Screw (CounterBore) | Steel | Plain | 1/2-13 x 3 1/4 | 12pt fl/b sc-cntrbore | 17 |
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| MidStates | MI | 12 Point Flange Screw (CounterBore) | Steel | Plain | 1/2-13 x 7 | 12pt fl/b sc-cntrbore | 8 |
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| WDMB | IA | 12 Point Flange Screw (CounterBore) | Steel | Plain | 1/2-13 x 2 1/4 | screw 12pt flange alloy (pl) 1/2-13x2 1/4 (W020) (W020) (W020) | 7,970 |
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| MTP | CA | 12 Point Flange Screw (CounterBore) | Steel | Zinc/Yellow | 1/2-20 x 7/8 | 1/2-20x7/8 alloy yzn 12 point flange bolt | stock |
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| MTP | CA | 12 Point Flange Screw (CounterBore) | Steel | Black Oxide | 1/2-20 x 1 1/4 | 1/2-20x1 1/4 alloy blk 12 pt flange screws | stock |
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| MTP | CA | 12 Point Flange Screw (CounterBore) | Steel | Black Oxide | 1/2-20 x 3 1/4 | 1/2-20x3 1/4 alloy blk 12 pt flange screws | stock |
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| MTP | CA | 12 Point Flange Screw (CounterBore) | Steel | Black Oxide | 1/2-20 x 1 1/4 | 1/2-20x1 1/4 alloy blk 12 pt flange screws | stock |
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| MTP | CA | 12 Point Flange Screw (CounterBore) | Steel | Zinc/Yellow | 1/2-20 x 2 3/4 | 1/2-20x2 3/4 alloy yzn 12 point flange bolt | stock |
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| MTP | CA | 12 Point Flange Screw (CounterBore) | Steel | Black Oxide | 1/2-20 x 1 3/4 | 1/2-20x1 3/4 alloy blk 12 pt flange screws | stock |
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| MTP | CA | 12 Point Flange Screw (CounterBore) | Steel | Black Oxide | 1/2-20 x 4 1/2 | 1/2-20x4 1/2 alloy blk 12 pt flange screws | stock |
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| MTP | CA | 12 Point Flange Screw (CounterBore) | Steel | Black Oxide | 1/2-20 x 2 | 1/2-20x2 alloy blk 12 pt flange screws | stock |
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| MTP | CA | 12 Point Flange Screw (CounterBore) | Steel | Black Oxide | 1/2-20 x 3 | 1/2-20x3 alloy blk 12 pt flange screws | stock |
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| MTP | CA | 12 Point Flange Screw (CounterBore) | Steel | Black Oxide | 1/2-20 x 2 1/4 | 1/2-20x2 1/4 alloy blk 12 pt flange screws | stock |
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| MTP | CA | 12 Point Flange Screw (CounterBore) | Steel | Black Oxide | 1/2-20 x 2 1/2 | 1/2-20x2 1/2 alloy blk 12 pt flange screws | stock |
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| MTP | CA | 12 Point Flange Screw (CounterBore) | Steel | Black Oxide | 1/2-20 x 1 | 1/2-20x1 alloy blk 12 pt flange screws | stock |
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| MTP | CA | 12 Point Flange Screw (CounterBore) | Steel | Black Oxide | 1/2-20 x 1 1/2 | 1/2-20x1 1/2 alloy blk 12 pt flange screws | stock |
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| MTP | CA | 12 Point Flange Screw (CounterBore) | Steel | Black Oxide | 1/2-20 x 3 1/2 | 1/2-20x3 1/2 alloy blk 12 pt flange screws | stock |
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| MTP | CA | 12 Point Flange Screw (CounterBore) | Steel | Black Oxide | 1/2-20 x 5 | 1/2-20x5 alloy blk 12 pt flange screws | stock |
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| MTP | CA | 12 Point Flange Screw (CounterBore) | Steel | Black Oxide | 1/2-20 x 4 | 1/2-20x4 alloy blk 12 pt flange screws | stock |
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| MTP | CA | 12 Point Flange Screw (CounterBore) | Steel | Zinc/Yellow | 1/2-20 x 4 | 1/2-20x4 alloy yzn 12 pt flange screws | stock |
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| MTP | CA | 12 Point Flange Screw (CounterBore) | Steel | Zinc/Yellow | 1/2-20 x 4 1/2 | 1/2-20 x 4 1/2 alloy yzn 12 pt flange screws | 4,890 |
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| IPC | VA | 12 Point Flange Screw (CounterBore) | Steel | Zinc/Yellow | 1/2-13 x 3 1/2 | 1/2-13x3 1/2 12 pt. flange screw 150m t.s. steel zinc yellow must be baked and relieved immediately after plating. certs required | 4,421 |
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| IPC | VA | 12 Point Flange Screw (CounterBore) | Steel | Plain | 1/2-20 x 6 | 1/2-20x6 12 pt. flange screw 170m t.s. must meet 170 000 psi tensile strength min. | 11 |
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| IPC | VA | 12 Point Flange Screw (CounterBore) | Steel | Plain | 1/2-13 x 2 | 1/2-13x2 12 pt. flange screw | 1,220 |
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| Delta | TX | 12 Point Flange Screw (CounterBore) | Steel | Plain | 1/2-13 x 1 3/4 | 12 pt countr-bor plain 1/2-13 x 1 3/4 | 152 |
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| Delta | TX | 12 Point Flange Screw (CounterBore) | Steel | Plain | 1/2-13 x 1 1/4 | 12 pt countr-bor plain 1/2-13 x 1 1/4 | 250 |
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| Delta | TX | 12 Point Flange Screw (CounterBore) | Steel | Plain | 1/2-13 x 3/4 | 12 pt countr-bor plain 1/2-13 x 3/4 | 64 |
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| Delta | TX | 12 Point Flange Screw (CounterBore) | Steel | Plain | 1/2-13 x 2 | 12 pt countr-bor plain 1/2-13 x 2 | 90 |
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| Delta | TX | 12 Point Flange Screw (CounterBore) | Steel | Plain | 1/2-13 x 1 1/2 | 12 pt countr-bor plain 1/2-13 x 1 1/2 | 50 |
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| Delta | TX | 12 Point Flange Screw (CounterBore) | Steel | Plain | 1/2-13 x 6 | 12 pt countr-bor plain 1/2-13 x 6 | 88 |
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| Delta | TX | 12 Point Flange Screw (CounterBore) | Steel | Plain | 1/2-13 x 4 1/2 | 12 pt countr-bor plain 1/2-13 x 4 1/2 | 71 |
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| Delta | TX | 12 Point Flange Screw (CounterBore) | Steel | Plain | 1/2-20 x 1 | 12 pt countr-bor plain 1/2-20 x 1 (FINE THREAD) | 53 |
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| Delta | TX | 12 Point Flange Screw (CounterBore) | Steel | Plain | 1/2-13 x 2 1/2 | 12 pt countr-bor plain 1/2-13 x 2 1/2 | 130 |
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| Delta | TX | 12 Point Flange Screw (CounterBore) | Steel | Plain | 1/2-20 x 2 1/2 | 12 pt countr-bor plain 1/2-20 x 2 1/2 (FINE THREAD) | 56 |
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| Delta | TX | 12 Point Flange Screw (CounterBore) | Steel | Plain | 1/2-13 x 3 | 12 pt countr-bor plain 1/2-13 x 3 | 53 |
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| Delta | TX | 12 Point Flange Screw (CounterBore) | Grade B7 | Plain | 1/2-13 x 1 1/2 | 12 pt cntr-bor b7 grn 1/2-13 x 1 1/2 (XYLAN 1425 GREEN) | 100 |
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| Delta | TX | 12 Point Flange Screw (CounterBore) | Grade B7 | Plain | 1/2-13 x 2 1/4 | 12 pt cntr-bor b7 grn 1/2-13 x 2 1/4 (XYLAN 1425 GREEN) | 63 |
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| Delta | TX | 12 Point Flange Screw (CounterBore) | Grade B7 | Plain | 1/2-13 x 1 3/4 | 12 pt cntr-bor b7 blue 1/2-13 x 1 3/4 (XYLAN BLUE 1425) | 130 |
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| Delta | TX | 12 Point Flange Screw (CounterBore) | Grade B7 | Plain | 1/2-13 x 2 | 12 pt cntr-bor b7 grn 1/2-13 x 2 (XYLAN 1425 GREEN) | 84 |
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| Delta | TX | 12 Point Flange Screw (CounterBore) | Grade B7 | Plain | 1/2-13 x 1 1/2 | 12 pt countr-bor b7 blue 1/2-13x1 1/2 (XYLAN 1425 BLUE) | 52 |
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| WDMB | IA | 12 Point Flange Screw (CounterBore) | Steel | Zinc/Clear | 1/2-13 x 1 3/4 | scr 12pt flange st (zn) 1/2-13x1 3/4 (W050) | 836 |
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| WDMB | IA | 12 Point Flange Screw (CounterBore) | Grade 9 | Plain | 1/2-20 x 7.79 | screw 12pt flange gr9 (pl) 1/2-20x7.79 drw (W0S0) (W0S0) | 3,565 |
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| WDMB | IA | 12 Point Flange Screw (CounterBore) | Steel | Plain | 1/2-20 x 2 1/2 | screw 12pt flange all pl 1/2-20x2 1/2 drw | 800 |
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| JET Indus | WI | 12 Point Flange Screw (CounterBore) | Steel | Plain | 1/2-20 x 3 | 12pt flange bolt 1/2-20x3 plain | 100 |
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| JET Indus | WI | 12 Point Flange Screw (CounterBore) | Grade 8 | Plain | 1/2-20 x 2 | grade 8 12pt flange bolt 1/2-20x2 plain | 140 |
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| JET Indus | WI | 12 Point Flange Screw (CounterBore) | Steel | Plain | 1/2-20 x 2 1/2 | 12pt flange bolt 1/2-20x2 1/2 plain | 280 |
|
| JET Indus | WI | 12 Point Flange Screw (CounterBore) | Steel | Plain | 1/2-20 x 2 3/4 | 12 pt flange bolt 1/2-20x2 3/4 plain | 80 |
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| JET Indus | WI | 12 Point Flange Screw (CounterBore) | Steel | Plain | 1/2-20 x 2 | 12pt flange bolt 1/2-20x2 plain fine thread | 10 |
|
| JET Indus | WI | 12 Point Flange Screw (CounterBore) | Steel | Plain | 1/2-20 x 1 1/2 | 12pt. flange bolt 1/2-20x1 1/2 pln | 50 |
|
| JET Indus | WI | 12 Point Flange Screw (CounterBore) | Steel | Plain | 1/2-20 x 1 3/4 | 12pt. flange bolt 1/2-20x1 3/4 plain | 446 |
|
| JET Indus | WI | 12 Point Flange Screw (CounterBore) | Steel | Plain | 1/2-20 x 1 3/4 | 12pt. flange bolt 1/2-20x1 3/4 plain | 200 |
|
| JET Indus | WI | 12 Point Flange Screw (CounterBore) | Steel | Plain | 1/2-20 x 2 1/4 | 12pt. flange bolt 1/2-20x2 1/4 plain fine thread | 50 |
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| QFC | TX | 12 Point Flange Screw (CounterBore) | Steel | Plain | 1/2 x 1 1/4 | 1/2x1 1/4nc ferry head cap screw b18.2.1 | 100 |
|
| QFC | TX | 12 Point Flange Screw (CounterBore) | Steel | Plain | 1/2-13 x 1 1/2 | 1/2-13x1 1/2 ferry head c/s alloy plain b18.2.1 | 800 |
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| ISSCO | MO | 12 Point Flange Screw (CounterBore) | Steel | Plain | 1/2-13 x 5 | 12 point counterbore screw | 50 |
|
| ISSCO | MO | 12 Point Flange Screw (CounterBore) | Steel | Plain | 1/2-13 x 2 1/2 | 12 point counterbore screw | 134 |
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| ISSCO | MO | 12 Point Flange Screw (CounterBore) | Steel | Plain | 1/2-13 x 4 1/2 | 12 point counterbore screw | 472 |
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| ISSCO | MO | 12 Point Flange Screw (CounterBore) | Steel | Plain | 1/2-13 x 1 3/4 | 12 point counterbore screw | 300 |
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| System 22 | PA | 12 Point Flange Screw (CounterBore) | Superalloy (Inconel, Hastelloy, Alloy 20) | Plain | 1/2-20 x 3 | inconel 718 | 11 |
|
| System 22 | PA | 12 Point Flange Screw (CounterBore) | Superalloy (Inconel, Hastelloy, Alloy 20) | Plain | 1/2 x 2 1/2 | inconel 718 | 50 |
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| System 22 | PA | 12 Point Flange Screw (CounterBore) | Superalloy (Inconel, Hastelloy, Alloy 20) | Silver Plated | 1/2-20 x 2 1/2 | inconel 718 | 30 |
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| System 22 | PA | 12 Point Flange Screw (CounterBore) | Superalloy (Inconel, Hastelloy, Alloy 20) | Plain | 1/2-13 x 3 | inconel 718 | 30 |
|
| System 22 | PA | 12 Point Flange Screw (CounterBore) | Superalloy (Inconel, Hastelloy, Alloy 20) | Plain | 1/2 x 3 | inconel 718 | 30 |
|
| UltraFast | WA | 12 Point Flange Screw (CounterBore) | Steel | Zinc/Clear | 1/2-13 x 1 | double hex tork zn | inquire |
|
| Cascade | OR | 12 Point Flange Screw (CounterBore) | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | 1/2-13 x 1 3/4 | 18-8ss | 1000 |
|
| B & K FAST | PA | 12 Point Flange Screw (CounterBore) | Steel | Plain | 1/2-13 x 1 1/4 | 1/2-13 x 1 1/4 12 pt flange bolts b18.2.1 | 25 |
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| B & K FAST | PA | 12 Point Flange Screw (CounterBore) | Steel | Plain | 1/2-13 x 2 1/2 | 1/2-13 x 2 1/2 12 pt flange bolts b18.2.1 | 25 |
|
| B & K FAST | PA | 12 Point Flange Screw (CounterBore) | Steel | Plain | 1/2-20 x 2 1/2 | 1/2-20 x 2 1/2 12 pt flange bolts b18.2.1 | 65 |
|
| QFC | TX | 12 Point Flange Screw (CounterBore) | Steel | Plain | 1/2 x 1 1/2 | 1/2x1 1/2nf ferry hd cap screw b18.2.1 | 122 |
|
| Delta | TX | 12 Point Flange Screw (CounterBore) | Grade B7 | Plain | 1/2-13 x 2 1/2 | 12-pt bolt a193-b7 y-z 1/2-13 x 2 1/2 | 60 |
|
| Jackson | MS | 12 Point Flange Screw (CounterBore) | Steel | Plain | 1/2-13 x 5 | ferry c/s | 5 |
|
| Jackson | MS | 12 Point Flange Screw (CounterBore) | Steel | Plain | 1/2-13 x 3 1/2 | ferry c/s | 9 |
|
| Delta | TX | 12 Point Flange Screw (CounterBore) | Grade B7 | Plain | 1/2-13 x 2 1/4 | 12 pt countr-bor a193-b7 1/2-13 x 2 1/4 | 50 |
|
| OBRIEN | OH | 12 Point Flange Screw (CounterBore) | Steel | Plain | 1/2-13 x 4 | 12pt fl/b | 4 |
|
| THRDFAST | FL | 12 Point Flange Screw (CounterBore) | Steel | Plain | 1/2-13 x 1 1/4 | 12 pt counterbore screw b18.2.1 | 1 |
|
| WSB | KY | 12 Point Flange Screw (CounterBore) | Steel | Phosphate | 1/2-13 x 6 | q/screw 12pt flange all (po) 1/2-13x6 b18.2.1 | 320 |
|
| WSB | KY | 12 Point Flange Screw (CounterBore) | Steel | Phosphate | 1/2-13 x 1 1/4 | q/screw 12pt flange all (po) 1/2-13x1 1/4 b18.2.1 | 865 |
|
| WSB | KY | 12 Point Flange Screw (CounterBore) | Steel | Phosphate | 1/2-13 x 2 1/4 | q/screw 12pt flange all (po) 1/2-13x2 1/4 b18.2.1 | 4,600 |
|
| Revcar | VA | 12 Point Flange Screw (CounterBore) | Steel | Plain | 1/2-13 x 2 1/2 | 12 pt cntrbore screw darling only- with material test reports | 650 |
|
| Wurth Ind | D.F. | 12 Point Flange Screw (CounterBore) | Steel | Zinc/Yellow | 1/2-13 x 1 3/4 | 1/2-13 x 1 3/4 12 pt. counterbore screw yz | 398 |
|
| All Size | TX | 12 Point Flange Screw (CounterBore) | Steel | Plain | 1/2-20 x 1 | 1/2-20 x 1 12 point flange bolt alloy plain b18.2.1 | 30 |
|
| All Size | TX | 12 Point Flange Screw (CounterBore) | Steel | Plain | 1/2-13 x 2 | 1/2-13 x 2 12 point flange bolt plain b18.2.1 | 33 |
|
| Wurth | IN | 12 Point Flange Screw (CounterBore) | Grade 9 | Plain | 1/2-20 x 7.79 | 1/2-20 x 7.79 countr-bor per print grd 9 114154-027 | 3,976 |
|
| Wurth | IN | 12 Point Flange Screw (CounterBore) | Steel | Plain | 1/2-13 x 1 3/4 | 1/2-13 x 1-3/4 countr-bor screw alloy | 36,596 |
|
| Wurth | IN | 12 Point Flange Screw (CounterBore) | Steel | Plain | 1/2-13 x 1 1/2 | 1/2-13 x 1-1/2 countr-bor screw alloy | 28,027 |
|
| Wurth | IN | 12 Point Flange Screw (CounterBore) | Steel | Plain | 1/2-13 x 2 3/4 | 1/2-13x2 3/4 counter-bor alloy pack 70 per poly bag | 3,995 |
|
| Wurth | IN | 12 Point Flange Screw (CounterBore) | Steel | Plain | 1/2-13 x 4 | 1/2-13x4 countr-bor alloy pack 60 per poly bag | 1,090 |
|
| Wurth | IN | 12 Point Flange Screw (CounterBore) | Steel | Plain | 1/2-13 x 3 1/2 | 1/2-13 x 3 1/2 countr-bor screw alloy | 580 |
|
| Wurth | IN | 12 Point Flange Screw (CounterBore) | Steel | Plain | 1/2-13 x 6 | 1/2-13 x 6 countr-bor alloy pack 25 per poly bag | 150 |
|
| Valley Nu | WA | 12 Point Flange Screw (CounterBore) | Steel | Plain | 1/2-13 x 1 | nc 12 pt fl/b pl | 113 |
|
| Valley Nu | WA | 12 Point Flange Screw (CounterBore) | Steel | Plain | 1/2-13 x 5 1/2 | nc 12 pt fl/b pl | 5 |
|
| Valley Nu | WA | 12 Point Flange Screw (CounterBore) | Steel | Plain | 1/2-13 x 3 1/2 | nc 12 pt fl/b pl | 99 |
|
| Valley Nu | WA | 12 Point Flange Screw (CounterBore) | Steel | Plain | 1/2-13 x 1 3/4 | nc 12 pt fl/b pl | 65 |
|
| Valley Nu | WA | 12 Point Flange Screw (CounterBore) | Ste el | Plain | 1/2-13 x 3 | nc 12 pt fl/b pl | 24 |
|
| Valley Nu | WA | 12 Point Flange Screw (CounterBore) | Steel | Plain | 1/2-13 x 2 1/2 | nc 12 pt fl/b pl | 39 |
|
| Valley Nu | WA | 12 Point Flange Screw (CounterBore) | Steel | Plain | 1/2-20 x 1 3/4 | nf 12 pt fl/b pl | 45 |
|
| Valley Nu | WA | 12 Point Flange Screw (CounterBore) | Steel | Plain | 1/2-20 x 2 1/2 | nf 12 pt fl/b pl | 13 |
|
| Valley Nu | WA | 12 Point Flange Screw (CounterBore) | Steel | Plain | 1/2-20 x 2 | nf 12 pt fl/b pl | 20 |
|
| Valley Nu | WA | 12 Point Flange Screw (CounterBore) | Steel | Plain | 1/2-20 x 1 1/2 | nf 12 pt fl/b pl | 17 |
|
| Valley Nu | WA | 12 Point Flange Screw (CounterBore) | Steel | Plain | 1/2-20 x 2 3/4 | nf 12 pt fl/b pl | 30 |
|
| Valley Nu | WA | 12 Point Flange Screw (CounterBore) | Steel | Plain | 1/2-20 x 3 | nf 12 pt fl/b pl | 24 |
|
| Valley Nu | WA | 12 Point Flange Screw (CounterBore) | Steel | Plain | 1/2-20 x 4 | nf 12 pt fl/b pl | 1 |
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