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2 1/2 inch length 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
99 results, (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 | 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 | Plain | 7/16-20 x 2 1/2 | 7/16-20x2 1/2 alloy 12 point flange bolt | stock |
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| MTP | CA | 12 Point Flange Screw (CounterBore) | Steel | Zinc/Clear | 3/4-16 x 2 1/2 | 3/4-16 x 2 1/2 alloy zn 12 point flange screws 25 | 60 |
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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 | 3/4-10 x 2 1/2 | 3/4-10 x 2-1/2 12 pt flange screw alloy steel plain 719158 | 17 |
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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 2 1/2 | 1/2-20x2 1/2 gr8 12pt hd flange bolt plain | 25 |
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| Weaver | WA | 12 Point Flange Screw (CounterBore) | Grade 8 | Plain | 3/4-16 x 2 1/2 | 3/4-16x2 1/2 gr8 12pt hd flange bolt plain | 10 |
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| Jackson | MS | 12 Point Flange Screw (CounterBore) | Steel | Plain | 3/4-16 x 2 1/2 | nf ferry c/s | 5 |
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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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| Hayes | CA | 12 Point Flange Screw (CounterBore) | Steel | Plain | 3/8-24 x 2 1/2 | 3/8-24 x 2 1/2 12 pt. ctrbr screw alloy | 600 |
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| Hayes | CA | 12 Point Flange Screw (CounterBore) | Steel | Plain | 5/16-24 x 2 1/2 | 5/16-24 x 2 1/2 12 pt. ctrbr screw alloy | 100 |
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| Hayes | CA | 12 Point Flange Screw (CounterBore) | Steel | Plain | 7/8-9 x 2 1/2 | 7/8-9 x 2 1/2 12 pt. ctrbr screw alloy | 5 |
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| Hayes | CA | 12 Point Flange Screw (CounterBore) | Steel | Plain | 5/8-11 x 2 1/2 | 5/8-11 x 2 1/2 12 pt. ctrbr screw alloy | 7 |
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| Hayes | CA | 12 Point Flange Screw (CounterBore) | Steel | Plain | 7/16-20 x 2 1/2 | 7/16-20 x 2 1/2 12 pt. ctrbr screw alloy | 3 |
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| YANKEE | NH | 12 Point Flange Screw (CounterBore) | Steel | Plain | 3/8-16 x 2 1/2 | 3/8-16 x 2-1/2 12 point flange bolt-high tensile strength-alloy steel | 20 |
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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) | Superalloy (Inconel, Hastelloy, Alloy 20) | Plain | 3/8-24 x 2 1/2 | 3/8-24x2-1/2 12-pt flange bolt 17-4 ph s/s b18.2.1 () () () | 150 |
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| American | WI | 12 Point Flange Screw (CounterBore) | Steel | Plain | 5/8-11 x 2 1/2 | 5/8-11x2-1/2 nc 12 point flange bolt | 79 |
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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 | 3/4-16 x 2 1/2 | 3/4-16 x 2 1/2 alloy zn 12 point flange screws 25 | 60 |
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| MTP | CA | 12 Point Flange Screw (CounterBore) | Steel | Black Oxide | 3/8-16 x 2 1/2 | 12 pt flange screw alloy | 200 |
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| MTP | CA | 12 Point Flange Screw (CounterBore) | Steel | Black Oxide | 5/16-18 x 2 1/2 | 12 pt flange screw alloy | 200 |
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| MTP | CA | 12 Point Flange Screw (CounterBore) | Steel | Black Oxide | 7/16-14 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 1/2 | 12 pt flange screw alloy | 100 |
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| MTP | CA | 12 Point Flange Screw (CounterBore) | Steel | Zinc/Clear | 3/4-10 x 2 1/2 | 12 pt flange screw alloy | 60 |
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| MTP | CA | 12 Point Flange Screw (CounterBore) | Steel | Plain | 3/8-24 x 2 1/2 | 3/8-24 x 2 1/2 plain 12 point flange bolts | stock |
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| Endries | WI | 12 Point Flange Screw (CounterBore) | Steel | Plain | 5/8-11 x 2 1/2 | 5/8-11x2-1/2 alloy stl 170 000 psi 12 point flange screw plain | 118 |
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| Optimas | IL | 12 Point Flange Screw (CounterBore) | Superalloy (Inconel, Hastelloy, Alloy 20) | Plain | 3/8-24 x 2 1/2 | 3/8-24x2-1/2 12-point counterbore screw astm a286 per drawing ppap | 4212 |
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| Wurth Ind | IN | 12 Point Flange Screw (CounterBore) | Steel | Plain | 1-8 x 2 1/2 | scr 12pt flange alloy pl 1-8x2 1/2 steel plain | 292 |
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| WINA | MN | 12 Point Flange Screw (CounterBore) | Aluminum | Plain | 1-8 x 2 1/2 | scr 12pt flange alloy pl 1-8x2 1/2 | 292 |
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| WINA | MN | 12 Point Flange Screw (CounterBore) | Aluminum | Plain | 1 1/8-7 x 2 1/2 | scr 12pt flange alloy pl 1 1/8-7x2 1/2 | 619 |
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| Ababa | CA | 12 Point Flange Screw (CounterBore) | Steel | Plain | 3/8-24 x 2 1/2 | 3/8-24 x 2 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 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 | 5/8-18 x 2 1/2 | 5/8-18 x 2 1/2 12 point cap screw alloy b18.2.1 | 5 |
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| Ababa | CA | 12 Point Flange Screw (CounterBore) | Steel | Plain | 5/8-11 x 2 1/2 | 5/8-11 x 2 1/2 12 point cap screw alloy | 25 |
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| Weaver | WA | 12 Point Flange Screw (CounterBore) | Grade 8 | Plain | 3/8-16 x 2 1/2 | 3/8-16x2 1/2 gr8 12pt hd flange bolt plain | 460 |
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| Weaver | WA | 12 Point Flange Screw (CounterBore) | Grade 8 | Plain | 5/8-18 x 2 1/2 | 5/8-18x2 1/2 gr8 12pt hd flange bolt plain | 5 |
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| CIF | IL | 12 Point Flange Screw (CounterBore) | Steel | Plain | 5/8-11 x 2 1/2 | 5/8-11x2 1/2 12 point flange bolt with 1.750 useable thread alloy plain (38) (38) (38) () | 38 |
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| ASMC | IL | 12 Point Flange Screw (CounterBore) | Steel | Plain | 7/16-20 x 2 1/2 | fine 12-point fl/b b18.2.1 | 25 |
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| ASMC | IL | 12 Point Flange Screw (CounterBore) | Steel | Plain | 7/16-14 x 2 1/2 | 7/16-14x2 1/2 coarse 12-point flange screw alloy pln b18.2.1 | 25 |
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| ASMC | IL | 12 Point Flange Screw (CounterBore) | Steel | Plain | 3/4-16 x 2 1/2 | 3/4-16x2 1/2 fine 12-point flange screw alloy pln b18.2.1 | 15 |
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| ASMC | IL | 12 Point Flange Screw (CounterBore) | Steel | Plain | 3/4-10 x 2 1/2 | 3/4-10x2 1/2 coarse 12-point flange screw alloy pln unc | 64 |
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| ASMC | IL | 12 Point Flange Screw (CounterBore) | Steel | Plain | 5/8-18 x 2 1/2 | 5/8-18x2 1/2 fine 12-point flange screw alloy pln | 20 |
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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 | 5/8-11 x 2 1/2 | coarse 12-point fl/b | 33 |
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| ASMC | IL | 12 Point Flange Screw (CounterBore) | Steel | Plain | 3/8-24 x 2 1/2 | fine 12-point fl/b | 15 |
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| ASMC | IL | 12 Point Flange Screw (CounterBore) | Steel | Plain | 3/8-16 x 2 1/2 | coarse 12-point fl/b | 90 |
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| ASMC | IL | 12 Point Flange Screw (CounterBore) | Steel | Plain | 5/16-18 x 2 1/2 | coarse 12-point fl/b | 175 |
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| ASMC | IL | 12 Point Flange Screw (CounterBore) | Steel | Plain | 7/8-14 x 2 1/2 | 7/8-14x2 1/2 fine 12-point flange screw alloy pln b18.2.1 | 13 |
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| ASMC | IL | 12 Point Flange Screw (CounterBore) | Steel | Plain | 1-8 x 2 1/2 | 1-8x2 1/2 coarse 12-point flange screw alloy pln b18.2.1 | 4 |
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| Olander | CA | 12 Point Flange Screw (CounterBore) | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | 5/16-24 x 2 1/2 | 5/16-24 x 2 1/2 12-pt bolt sst rohs () () | 154 |
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| Ababa | CA | 12 Point Flange Screw (CounterBore) | Steel | Plain | 7/16-20 x 2 1/2 | 7/16-20 x 2 1/2 12 point cap screw alloy b18.2.1 | 70 |
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| Liberty | IL | 12 Point Flange Screw (CounterBore) | Grade 8 | Plain | 5/8-11 x 2 1/2 | 5/8-11x2-1/2 hex c/s 12-pt bolt screw 12-pt bolt | 20 |
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| MidStates | MI | 12 Point Flange Screw (CounterBore) | Steel | Plain | 1/4-20 x 2 1/2 | 12pt fl/b counterbore | 47 |
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| WDMB | IA | 12 Point Flange Screw (CounterBore) | Steel | Plain | 1/2-13 x 2 1/2 | scr 12pt flange alloy (pl) 1/2-13x2 1/2 (W000) (W000) (W000) | 1,121 |
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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 | Plain | 7/16-20 x 2 1/2 | 7/16-20x2 1/2 alloy 12 point flange bolt | stock |
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| MTP | CA | 12 Point Flange Screw (CounterBore) | Steel | Zinc/Yellow | 9/16-18 x 2 1/2 | 9/16-18 x 2 1/2 alloy 170psi 12 point flange bolts yellow zinc 8u hrc 38-43 | 4,230 |
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| Delta | TX | 12 Point Flange Screw (CounterBore) | Steel | Plain | 7/16-20 x 2 1/2 | 12 pt countr-bor plain 7/16-20 x 2 1/2 (TEMPERED (RC 25-34), FINE THREAD) | 2001 |
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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 | 5/8-11 x 2 1/2 | 12 pt countr-bor plain 5/8-11 x 2 1/2 | 59 |
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| Delta | TX | 12 Point Flange Screw (CounterBore) | Steel | Plain | 5/8-18 x 2 1/2 | 12 pt countr-bor plain 5/8-18 x 2 1/2 (FINE THREAD) | 50 |
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| Delta | TX | 12 Point Flange Screw (CounterBore) | Steel | Zinc/Clear | 3/4-10 x 2 1/2 | 12 pt countr-bor zinc 3/4-10 x 2 1/2 | 78 |
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| Delta | TX | 12 Point Flange Screw (CounterBore) | Grade B7M | Plain | 3/4-10 x 2 1/2 | 12 pt countr-bor a193-b7m 3/4-10 x 2 1/2 (PHOSPHATE COATING) | 50 |
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| Delta | TX | 12 Point Flange Screw (CounterBore) | Steel | Plain | 1/4-20 x 2 1/2 | 12 pt countr-bor plain 1/4-20 x 2 1/2 | 105 |
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| Delta | TX | 12 Point Flange Screw (CounterBore) | Steel | Plain | 3/8-24 x 2 1/2 | 12 pt countr-bor plain 3/8-24 x 2 1/2 (FINE THREAD) | 78 |
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| Delta | TX | 12 Point Flange Screw (CounterBore) | Grade B7M | Plain | 5/8-11 x 2 1/2 | 12 pt countr-bor dom. lb7m 5/8-11x2 1/2 (W/PC) | 96 |
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| Delta | TX | 12 Point Flange Screw (CounterBore) | Grade B7M | Plain | 3/4-10 x 2 1/2 | 12 pt counterbore lb7m 3/4-10 x 2 1/2 (W/PC) | 50 |
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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 2 1/2 | 12pt flange bolt 1/2-20x2 1/2 plain | 280 |
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| JET Indus | WI | 12 Point Flange Screw (CounterBore) | Steel | Plain | 3/8-16 x 2 1/2 | flange bolt 12pt 3/8-16x2 1/2 plain | 50 |
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| JET Indus | WI | 12 Point Flange Screw (CounterBore) | Steel | Plain | 5/8-18 x 2 1/2 | 12pt. flange bolt 5/8-18x2-1/2 plain | 150 |
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| JET Indus | WI | 12 Point Flange Screw (CounterBore) | Steel | Zinc/Clear | 3/8-16 x 2 1/2 | 12 pt flange bolt 3/8-16x2-1/2 zinc | 290 |
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| ISSCO | MO | 12 Point Flange Screw (CounterBore) | Steel | Plain | 3/8-16 x 2 1/2 | 12 point counterbore screw | 133 |
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| 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 | 5/8-11 x 2 1/2 | 12 point counterbore screw | 225 |
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| ISSCO | MO | 12 Point Flange Screw (CounterBore) | Steel | Plain | 3/4-10 x 2 1/2 | 12 point counterbore screw | 1275 |
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| 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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| 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 |
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| 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 |
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| B & K FAST | PA | 12 Point Flange Screw (CounterBore) | Steel | Plain | 5/8-18 x 2 1/2 | 5/8-18 x 2 1/2 12 pt flange bolts b18.2.1 | 28 |
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| OSSCO | RI | 12 Point Flange Screw (CounterBore) | Grade 8 | Plain | 5/8-11 x 2 1/2 | 5/8-11x2 1/2 ferry ctrbore cap screw gr8 b18.2.1 | 20 |
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| QFC | TX | 12 Point Flange Screw (CounterBore) | Steel | Plain | 3/4-10 x 2 1/2 | 3/4-10x2 1/2 ferry head c/s 170ksi plain mtrs showing hrc 37-45 and chemistry reqd b18.2.1 | 2 |
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| QFC | TX | 12 Point Flange Screw (CounterBore) | Steel | Zinc/Clear | 3/4-10 x 2 1/2 | 3/4-10x2 1/2 ferry cap screw 170ksi mech zinc mtrs showing hrc 37-45 and chemistry reqd b18.2.1 | 80 |
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| Delta | TX | 12 Point Flange Screw (CounterBore) | Steel | Phosphate | 3/8-24 x 2 1/2 | 12 pt countr-bor phos 3/8-24 x 2 1/2 | 75 |
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| 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 |
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| Delta | TX | 12 Point Flange Screw (CounterBore) | Steel | Phosphate | 7/16-20 x 2 1/2 | 12 pt countr-bor phos 7/16-20x2 1/2 | 110 |
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| Dan-Loc | TX | 12 Point Flange Screw (CounterBore) | Grade B7 | Plain | 5/8-11 x 2 1/2 | 5/8-11x2-1/2 c/s 12 pt b7/l7 pl full thread | 20590 |
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| OBRIEN | OH | 12 Point Flange Screw (CounterBore) | Steel | Plain | 5/8-11 x 2 1/2 | 12pt fl/b | 1 |
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| 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 |
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| MTP | CA | 12 Point Flange Screw (CounterBore) | Steel | Zinc/Clear | 3/4-16 x 2 1/2 | 12 pt flange screw alloy | stock |
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| All Size | TX | 12 Point Flange Screw (CounterBore) | Steel | Plain | 1/4-20 x 2 1/2 | 1/4-20 x 2-1/2 12 point flange bolt plain b18.2.1 | 149 |
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| Wurth | IN | 12 Point Flange Screw (CounterBore) | Steel | Plain | 1-8 x 2 1/2 | 1-8 x 2-1/2 countr-bor screw alloy per print part# wa0880 pack 50 per poly bag | 280 |
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| Valley Nu | WA | 12 Point Flange Screw (CounterBore) | Steel | Plain | 1/4-20 x 2 1/2 | nc 12 pt fl/b pl | 99 |
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| Valley Nu | WA | 12 Point Flange Screw (CounterBore) | Steel | Plain | 3/8-16 x 2 1/2 | nc 12 pt fl/b pl | 170 |
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| Valley Nu | WA | 12 Point Flange Screw (CounterBore) | Steel | Plain | 5/16-18 x 2 1/2 | nc 12 pt fl/b pl | 92 |
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| Valley Nu | WA | 12 Point Flange Screw (CounterBore) | Steel | Plain | 7/16-14 x 2 1/2 | nc 12 pt fl/b pl | 41 |
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| Valley Nu | WA | 12 Point Flange Screw (CounterBore) | Steel | Plain | 1/2-13 x 2 1/2 | nc 12 pt fl/b pl | 39 |
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| Valley Nu | WA | 12 Point Flange Screw (CounterBore) | Steel | Plain | 1/2-20 x 2 1/2 | nf 12 pt fl/b pl | 13 |
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