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Counterbore Screws, Steel (ASME B18. 2.1)
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
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| 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 | |
| Buy Counterbore Screws from one of our FCH Network Members | ||||||||
| BHAM | AL | 12 Point Flange Screw (CounterBore) | Steel | Plain | 5/16-24 x 2 1/4 | 5/16-24 x 2-1/4 12 point flange bolt b18.2.1 | 732 |
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| BHAM | AL | 12 Point Flange Screw (CounterBore) | Steel | Plain | 3/4-10 x 3 1/2 | 3/4-10x3-1/2 12 point counterbore bolt b18.2.1 | 20 |
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| BHAM | AL | 12 Point Flange Screw (CounterBore) | Steel | Plain | 3/4-10 x 1 1/2 | 3/4-10x1-1/2 12 point counterbore bolt b18.2.1 | 197 |
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| BHAM | AL | 12 Point Flange Screw (CounterBore) | Steel | Plain | 3/8-16 x 1 | 3/8-16x1 12 pt counterbore bolt b18.2.1 | 50 |
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| BHAM | AL | 12 Point Flange Screw (CounterBore) | Steel | Plain | 3/8-24 x 2 1/4 | 3/8-24 x 2 1/4 (12 point) counterbore b18.2.1 | 974 |
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| BHAM | AL | 12 Point Flange Screw (CounterBore) | Steel | Plain | 1 1/8-7 x 4 1/2 | 1-1/8-7x4-1/2 12 pt counterbore bolt b18.2.1 | 48 |
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| BHAM | AL | 12 Point Flange Screw (CounterBore) | Steel | Plain | #12-14 x 2 | #12-14x2 hwh seal drill flange 3pt b18.2.1 | 149750 |
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| Ababa | CA | 12 Point Flange Screw (CounterBore) | Steel | Plain | 1/4-20 x 1 1/4 | 1/4-20 x 1 1/4 12 point cap screw alloy b18.2.1 | 100 |
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| Ababa | CA | 12 Point Flange Screw (CounterBore) | Steel | Plain | 1/4-20 x 3/4 | 1/4-20 x 3/4 12 point cap screw alloy b18.2.1 | 75 |
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| Ababa | CA | 12 Point Flange Screw (CounterBore) | Steel | Plain | 1/4-28 x 1 1/4 | 1/4-28 x 1 1/4 12 point cap screw alloy b18.2.1 | 125 |
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| Ababa | CA | 12 Point Flange Screw (CounterBore) | Steel | Plain | 1/4-28 x 1 1/2 | 1/4-28 x 1 1/2 12 point cap screw alloy b18.2.1 | 65 |
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| Ababa | CA | 12 Point Flange Screw (CounterBore) | Steel | Plain | 1/4-28 x 3/4 | 1/4-28 x 3/4 12 point cap screw alloy b18.2.1 | 20 |
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| Ababa | CA | 12 Point Flange Screw (CounterBore) | Steel | Plain | 5/16-18 x 1 | 5/16-18 x 1 12 point cap screw alloy b18.2.1 | 69 |
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| Ababa | CA | 12 Point Flange Screw (CounterBore) | Steel | Plain | 5/16-18 x 1 1/4 | 5/16-18 x 1 1/4 12 point cap screw alloy b18.2.1 | 50 |
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| Ababa | CA | 12 Point Flange Screw (CounterBore) | Steel | Plain | 5/16-18 x 1 3/4 | 5/16-18 x 1 3/4 12 point cap screw alloy b18.2.1 | 75 |
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| Ababa | CA | 12 Point Flange Screw (CounterBore) | Steel | Plain | 5/16-18 x 3/4 | 5/16-18 x 3/4 12 point cap screw alloy b18.2.1 | 62 |
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| Ababa | CA | 12 Point Flange Screw (CounterBore) | Steel | Plain | 5/16-18 x 7/8 | 5/16-18 x 7/8 12 point cap screw alloy b18.2.1 | 125 |
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| Ababa | CA | 12 Point Flange Screw (CounterBore) | Steel | Plain | 5/16-24 x 1 | 5/16-24 x 1 12 point cap screw alloy b18.2.1 | 295 |
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| Ababa | CA | 12 Point Flange Screw (CounterBore) | Steel | Plain | 5/16-24 x 1 1/4 | 5/16-24 x 1 1/4 12 point cap screw alloy b18.2.1 | 120 |
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| Ababa | CA | 12 Point Flange Screw (CounterBore) | Steel | Plain | 5/16-24 x 3/4 | 5/16-24 x 3/4 12 point cap screw alloy b18.2.1 | 150 |
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| Ababa | CA | 12 Point Flange Screw (CounterBore) | Steel | Plain | 5/16-24 x 7/8 | 5/16-24 x 7/8 12 point cap screw alloy b18.2.1 | 25 |
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| Ababa | CA | 12 Point Flange Screw (CounterBore) | Steel | Plain | 3/8-16 x 1 | 3/8-16 x 1 12 point cap screw alloy b18.2.1 | 44 |
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| Ababa | CA | 12 Point Flange Screw (CounterBore) | Steel | Plain | 3/8-16 x 1 1/2 | 3/8-16 x 1 1/2 12 point cap screw alloy b18.2.1 | 111 |
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| Ababa | CA | 12 Point Flange Screw (CounterBore) | Steel | Plain | 3/8-24 x 1 | 3/8-24 x 1 12 point cap screw alloy b18.2.1 | 60 |
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| Ababa | CA | 12 Point Flange Screw (CounterBore) | Steel | Zinc/Clear | 3/8-24 x 1 1/4 | 3/8-24 x 1 1/4 12 point cap screw alloy znc b18.2.1 | 2224 |
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| Ababa | CA | 12 Point Flange Screw (CounterBore) | Steel | Plain | 3/8-24 x 1 1/2 | 3/8-24 x 1 1/2 12 point cap screw alloy b18.2.1 | 72 |
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| Ababa | CA | 12 Point Flange Screw (CounterBore) | Steel | Plain | 3/8-24 x 1 3/4 | 3/8-24 x 1 3/4 12 point cap screw alloy b18.2.1 | 39 |
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| ASMC | IL | 12 Point Flange Screw (CounterBore) | Steel | Plain | 3/4-16 x 1 1/2 | 3/4-16x1 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 | 3/4-16 x 2 1/4 | 3/4-16x2 1/4 fine 12-point flange screw alloy pln b18.2.1 | 15 |
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| ASMC | IL | 12 Point Flange Screw (CounterBore) | Steel | Plain | 3/8-16 x 5 | 3/8-16x5 coarse 12-point flange screw alloy pln b18.2.1 | 15 |
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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 | 5/8-11 x 1 1/4 | coarse 12-point fl/b b18.2.1 | 210 |
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| ASMC | IL | 12 Point Flange Screw (CounterBore) | Steel | Plain | 3/8-16 x 3 1/2 | coarse 12-point fl/b b18.2.1 | 10 |
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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 | 1/4-28 x 2 | fine 12-point fl/b b18.2.1 | 100 |
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| ASMC | IL | 12 Point Flange Screw (CounterBore) | Steel | Plain | 5/16-24 x 3 1/4 | fine 12-point fl/b b18.2.1 | 50 |
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| ASMC | IL | 12 Point Flange Screw (CounterBore) | Steel | Plain | 1/4-28 x 2 1/4 | fine 12-point fl/b b18.2.1 | 100 |
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| ASMC | IL | 12 Point Flange Screw (CounterBore) | Steel | Plain | 3/8-16 x 2 1/4 | coarse 12-point fl/b b18.2.1 | 9 |
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| ASMC | IL | 12 Point Flange Screw (CounterBore) | Steel | Plain | 5/16-18 x 4 | 5/16-18x4 coarse 12-point flange screw alloy pln b18.2.1 | 35 |
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| ASMC | IL | 12 Point Flange Screw (CounterBore) | Steel | Plain | 7/8-9 x 2 1/4 | 7/8-9x2 1/4 coarse 12-point flange screw alloy pln b18.2.1 | 16 |
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| ASMC | IL | 12 Point Flange Screw (CounterBore) | Steel | Plain | 5/8-18 x 2 3/4 | 5/8-18x2 3/4 fine 12-point flange screw alloy pln b18.2.1 | 5 |
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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 | 5/16-18 x 3 1/4 | 5/16-18x3 1/4 coarse 12-point flange screw alloy pln b18.2.1 | 5 |
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| ASMC | IL | 12 Point Flange Screw (CounterBore) | Steel | Plain | 5/8-18 x 3 1/2 | 5/8-18x3 1/2 fine 12-point flange screw alloy pln b18.2.1 | 10 |
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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 | 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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| Ababa | CA | 12 Point Flange Screw (CounterBore) | Steel | Plain | 1/4-20 x 1 1/4 | 1/4-20 x 1 1/4 12 point cap screw alloy b18.2.1 | 25 |
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| Ababa | CA | 12 Point Flange Screw (CounterBore) | Steel | Plain | 1/4-20 x 1 1/2 | 1/4-20 x 1 1/2 12 point cap screw alloy b18.2.1 | 25 |
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| Ababa | CA | 12 Point Flange Screw (CounterBore) | Steel | Plain | 1/4-20 x 1 1/2 | 1/4-20 x 1 1/2 12 point cap screw alloy b18.2.1 | 50 |
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| Ababa | CA | 12 Point Flange Screw (CounterBore) | Steel | Plain | 1/4-28 x 1 1/4 | 1/4-28 x 1 1/4 12 point cap screw alloy b18.2.1 | 100 |
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| Ababa | CA | 12 Point Flange Screw (CounterBore) | Steel | Plain | 1/4-28 x 1 1/2 | 1/4-28 x 1 1/2 12 point cap screw alloy b18.2.1 | 25 |
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| Ababa | CA | 12 Point Flange Screw (CounterBore) | Steel | Plain | 5/16-18 x 1 | 5/16-18 x 1 12 point cap screw alloy b18.2.1 | 100 |
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| Ababa | CA | 12 Point Flange Screw (CounterBore) | Steel | Plain | 5/16-18 x 1 1/4 | 5/16-18 x 1 1/4 12 point cap screw alloy b18.2.1 | 50 |
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| Ababa | CA | 12 Point Flange Screw (CounterBore) | Steel | Plain | 5/16-18 x 1 3/4 | 5/16-18 x 1 3/4 12 point cap screw alloy b18.2.1 | 25 |
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| Ababa | CA | 12 Point Flange Screw (CounterBore) | Steel | Plain | 5/16-18 x 2 | 5/16-18 x 2 12 point cap screw alloy b18.2.1 | 25 |
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| Ababa | CA | 12 Point Flange Screw (CounterBore) | Steel | Plain | 5/16-18 x 3/4 | 5/16-18 x 3/4 12 point cap screw alloy b18.2.1 | 100 |
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| Ababa | CA | 12 Point Flange Screw (CounterBore) | Steel | Plain | 5/16-24 x 1 | 5/16-24 x 1 12 point cap screw alloy b18.2.1 | 75 |
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| Ababa | CA | 12 Point Flange Screw (CounterBore) | Steel | Plain | 5/16-24 x 7/8 | 5/16-24 x 7/8 12 point cap screw alloy b18.2.1 | 25 |
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| Ababa | CA | 12 Point Flange Screw (CounterBore) | Steel | Plain | 3/8-16 x 1 | 3/8-16 x 1 12 point cap screw alloy b18.2.1 | 140 |
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| Abab a | CA | 12 Point Flange Screw (CounterBore) | Steel | Plain | 5/16-24 x 1/2 | 5/16-24 x 1/2 12 point cap screw alloy b18.2.1 | 100 |
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| Ababa | CA | 12 Point Flange Screw (CounterBore) | Steel | Plain | 3/8-24 x 1 | 3/8-24 x 1 12 point cap screw alloy b18.2.1 | 40 |
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| Ababa | CA | 12 Point Flange Screw (CounterBore) | Steel | Plain | 3/8-24 x 1 1/4 | 3/8-24 x 1 1/4 12 point cap screw alloy b18.2.1 | 60 |
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| Ababa | CA | 12 Point Flange Screw (CounterBore) | Steel | Plain | 3/8-24 x 1 1/4 | 3/8-24 x 1 1/4 12 point cap screw alloy b18.2.1 | 20 |
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| Ababa | CA | 12 Point Flange Screw (CounterBore) | Steel | Plain | 3/8-24 x 1 1/2 | 3/8-24 x 1 1/2 12 point cap screw alloy b18.2.1 | 50 |
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| Ababa | CA | 12 Point Flange Screw (CounterBore) | Steel | Plain | 3/8-24 x 1 3/4 | 3/8-24 x 1 3/4 12 point cap screw alloy b18.2.1 | 30 |
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| Ababa | CA | 12 Point Flange Screw (CounterBore) | Steel | Plain | 3/8-24 x 2 | 3/8-24 x 2 12 point cap screw alloy b18.2.1 | 15 |
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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 |
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| 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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| QFC | TX | 12 Point Flange Screw (CounterBore) | Steel | Zinc/Clear | 3/4-10 x 2 | 3/4-10x2 ferry head c/s 170ksi mech zinc mtrs must show hrc 37-45 and chemistry b18.2.1 | 74 |
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| B & K FAST | PA | 12 Point Flange Screw (CounterBore) | Steel | Plain | 1/4 | 1/4 counterbore # csc55655 b18.2.1 | 1 |
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| B & K FAST | PA | 12 Point Flange Screw (CounterBore) | Steel | Plain | 5/16-18 x 1 | 5/16-18 x 1 12 pt flange bolts b18.2.1 | 9 |
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| B & K FAST | PA | 12 Point Flange Screw (CounterBore) | Steel | Plain | 5/16-18 x 1 1/4 | 5/16-18 x 1 1/4 12 pt flange bolts b18.2.1 | 347 |
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| B & K FAST | PA | 12 Point Flange Screw (CounterBore) | Steel | Plain | 5/16-24 x 1 | 5/16-24 x 1 12 pt flange bolts b18.2.1 | 54 |
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| B & K FAST | PA | 12 Point Flange Screw (CounterBore) | Steel | Plain | 3/8-16 x 1 3/4 | 3/8-16 x 1 3/4 12 pt flange bolts b18.2.1 | 2 |
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| B & K FAST | PA | 12 Point Flange Screw (CounterBore) | Steel | Plain | 3/8-16 x 4 3/4 | 3/8-16 x 4 3/4 12 pt flange bolts b18.2.1 | 104 |
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| 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 |
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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 | 5/8-11 x 1 3/4 | 5/8-11 x 1 3/4 12 pt flange bolts b18.2.1 | 44 |
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| B & K FAST | PA | 12 Point Flange Screw (CounterBore) | Steel | Plain | 5/8-18 x 2 | 5/8-18 x 2 12 pt flange bolts b18.2.1 | 17 |
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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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| B & K FAST | PA | 12 Point Flange Screw (CounterBore) | Steel | Plain | 7/8-14 x 4 | 7/8-14 x 4 12 pt flange bolts b18.2.1 | 1 |
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| General F | MI | 12 Point Flange Screw (CounterBore) | Steel | Plain | 3/4-10 x 2 3/4 | 3/4-10x2.75 12 pt ctbr scr b18.2.1 | 900 |
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| General F | MI | 12 Point Flange Screw (CounterBore) | Steel | Plain | 7/8-9 x 4 1/4 | 7/8-9 x 4.25 12-pt ctrb scr q29 b18.2.1 | 3967 |
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| General F | MI | 12 Point Flange Screw (CounterBore) | Steel | Plain | 7/16-20 x 1 1/8 | 7/16-20 x 1.125 12-pt ctbr scr b18.2.1 | 7029 |
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| General F | MI | 12 Point Flange Screw (CounterBore) | Steel | Plain | 3/8-16 x 1 | 3/8-16 x 1 12 pt ctbr scr b18.2.1 | 529 |
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| QFC | TX | 12 Point Flange Screw (CounterBore) | Steel | Plain | 3/8 x 1 1/4 | 3/8x1 1/4nc ferry head cap scr b18.2.1 | 100 |
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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 | Plain | 1/2 x 1 1/2 | 1/2x1 1/2nf ferry hd cap screw b18.2.1 | 122 |
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| QFC | TX | 12 Point Flange Screw (CounterBore) | Steel | Plain | counter bore hss 0.625 1/2sh b18.2.1 | 1 |
| |
| QFC | TX | 12 Point Flange Screw (CounterBore) | Steel | Zinc/Clear | 1-8 x 2 1/4 | 1-8x2-1/4 ferry hd cap screw mech zinc b18.2.1 | 103 |
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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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| QFC | TX | 12 Point Flange Screw (CounterBore) | Steel | Plain | 1-8 x 3 1/2 | 1-8x3-1/2 ferry hd cap screw b18.2.1 | 36 |
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| THRDFAST | FL | 12 Point Flange Screw (CounterBore) | Steel | Plain | 1/2-13 x 1 1/4 | 12 pt counterbore screw b18.2.1 | 1 |
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| THRDFAST | FL | 12 Point Flange Screw (CounterBore) | Steel | Plain | 5/8-11 x 1 1/4 | 12 pt counterbore screw b18.2.1 | 1 |
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| THRDFAST | OK | 12 Point Flange Screw (CounterBore) | Steel | Plain | 1/4-20 x 7/8 | 12 pt counterbore screw b18.2.1 | 25 |
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| THRDFAST | OK | 12 Point Flange Screw (CounterBore) | Steel | Plain | 1 1/8 | nf-12x3 12pt counterbore screw b18.2.1 | 9 |
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| THRDFAST | OK | 12 Point Flange Screw (CounterBore) | Steel | Plain | 1 | 1 nf-14x3 12 pt counterbore screw b18.2.1 | 1 |
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| WSB | KY | 12 Point Flange Screw (CounterBore) | Steel | Plain | 3/4-10 x 8 | q/screw 12pt flange st (xyl) 3/4-10x8 b18.2.1 | 13 |
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| WSB | KY | 12 Point Flange Screw (CounterBore) | Steel | Plain | 3/4-10 x 3 1/2 | screw countrbr 12pt all 3/4-10x3 1/2 b18.2.1 | 712 |
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| 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 |
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| 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 |
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| 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 |
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| WSB | KY | 12 Point Flange Screw (CounterBore) | Steel | Plain | 3/4-10 x 3 1/4 | screw 12pt flange alloy (pl) 3/4-10x3 1/4 b18.2.1 | 100 |
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| WSB | KY | 12 Point Flange Screw (CounterBore) | Steel | Plain | 7/8-9 x 1 3/4 | screw 12pt flange alloy (pl) 7/8-9x1 3/4 b18.2.1 | 62 |
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| WSB | KY | 12 Point Flange Screw (CounterBore) | Steel | Plain | 3/4-10 x 4 | screw 12pt flange alloy (pl) 3/4-10x4 b18.2.1 | 441 |
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| WSB | KY | 12 Point Flange Screw (CounterBore) | Steel | Plain | 7/8-9 x 5 | screw 12pt flange alloy (pl) 7/8-9x5 b18.2.1 | 60 |
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| WSB | KY | 12 Point Flange Screw (CounterBore) | Steel | Plain | 3/4-10 x 4 | screw 12pt flange alloy (pl) 3/4-10x4 b18.2.1 | 347 |
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| 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 |
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| All Size | TX | 12 Point Flange Screw (CounterBore) | Steel | Plain | 3/4-16 x 2 3/4 | 3/4-16 x 2 3/4 12 point flange bolt plain b18.2.1 | 115 |
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| All Size | TX | 12 Point Flange Screw (CounterBore) | Steel | Plain | 3/8-16 x 2 1/4 | 3/8-16 x 2 1/4 12 point flange bolt plain b18.2.1 | 89 |
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| All Size | TX | 12 Point Flange Screw (CounterBore) | Steel | Plain | 3/8-16 x 1 1/4 | 3/8-16 x 1 1/4 12 point flange bolt plain b18.2.1 | 50 |
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| All Size | TX | 12 Point Flange Screw (CounterBore) | Steel | Plain | 3/4-16 x 3 1/2 | 3/4-16 x 3 1/2 12 point flange bolt plain b18.2.1 | 34 |
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| All Size | TX | 12 Point Flange Screw (CounterBore) | Steel | Plain | 5/8-18 x 4 1/2 | 5/8-18 x 4-1/2 12 point flange bolt plain b18.2.1 | 1 |
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| All Size | TX | 12 Point Flange Screw (CounterBore) | Steel | Plain | 3/4-10 x 2 3/4 | 3/4-10 x 2 3/4 12 point flange bolt plain b18.2.1 | 177 |
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| All Size | TX | 12 Point Flange Screw (CounterBore) | Steel | Plain | 7/16-20 x 1 1/4 | 7/16-20 x 1 1/4 12 point flange bolt plain b18.2.1 | 389 |
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| All Size | TX | 12 Point Flange Screw (CounterBore) | Steel | Plain | 3/4-10 x 1 1/2 | 3/4-10 x 1 1/2 12 point flange bolt plain b18.2.1 | 160 |
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| All Size | TX | 12 Point Flange Screw (CounterBore) | Steel | Plain | 3/4-16 x 2 1/4 | 3/4-16 x 2 1/4 12 point flange bolt plain b18.2.1 | 12 |
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| All Size | TX | 12 Point Flange Screw (CounterBore) | Steel | Plain | 3/8-24 x 2 1/4 | 3/8-24 x 2 1/4 12 point flange bolt plain b18.2.1 | 142 |
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| 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 |
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| All Size | TX | 12 Point Flange Screw (CounterBore) | Steel | Plain | 1-8 x 5 3/4 | 1-8 x 5 3/4 12 point flange bolt plain-3 way cross drilled head b18.2.1 | 180 |
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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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| All Size | TX | 12 Point Flange Screw (CounterBore) | Steel | Plain | 3/8-16 x 4 | 3/8-16 x 4 12 point flange bolt plain b18.2.1 | 82 |
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| All Size | TX | 12 Point Flange Screw (CounterBore) | Steel | Plain | 5/8-11 x 3 1/2 | 5/8-11 x 3-1/2 12 point flange bolt plain b18.2.1 | 23 |
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| All Size | TX | 12 Point Flange Screw (CounterBore) | Steel | Plain | 3/8-16 x 4 1/2 | 3/8-16 x 4-1/2 12 point flange bolt plain b18.2.1 | 331 |
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| All Size | TX | 12 Point Flange Screw (CounterBore) | Steel | Plain | 7/16-14 x 1 | 7/16-14 x 1 12 point flange bolt plain b18.2.1 | 55 |
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| All Size | TX | 12 Point Flange Screw (CounterBore) | Steel | Plain | 3/8-16 x 2 | 3/8-16 x 2 12 point flange bolt b18.2.1 | 54 |
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| All Size | TX | 12 Point Flange Screw (CounterBore) | Steel | Plain | 5/8-11 x 1 | 5/8-11 x 1 12 point flange bolt plain b18.2.1 | 18 |
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| FACCA | Ont | 12 Point Flange Screw (CounterBore) | Steel | Zinc/Clear | 3/8-16 x 3 1/2 | 12 point flanged countr-bor screw 3/8-16 unc-3a x 3 1/2 lg medium carbon alloy steel quenched & tempered not plated ifi 115-1986 b18.2.1 | 400 |
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| FACCA | Ont | 12 Point Flange Screw (CounterBore) | Steel | Zinc/Clear | 1-8 x 2 3/4 | 12 point flanged countr-bor screw 1-8 unc-3a x 2 3/4 lg medium carbon steel quenched & tempered not plated ifi 115-1986 b18.2.1 | 80 |
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