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5/16 Counterbore Screws (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
34 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 | |
| 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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| 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 | 5/16-18 x 1 1/2 | 5/16-18 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 | 5/16-24 x 3 | 5/16-24 x 3 12 point cap screw alloy b18.2.1 | 20 |
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| GLF | OH | 12 Point Flange Screw (CounterBore) | Superalloy (Inconel, Hastelloy, Alloy 20) | Plain | 5/16-18 x 3/4 | 5/16-18x3/4 12-pt flange bolt 17-4 ph s/s b18.2.1 () () () | 306 |
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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 | 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 | 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 | 5/16-18 x 2 | 5/16-18x2 coarse 12-point flange screw alloy pln b18.2.1 | 50 |
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| ASMC | IL | 12 Point Flange Screw (CounterBore) | Steel | Plain | 5/16-24 x 1 1/2 | fine 12-point fl/b b18.2.1 | 825 |
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| ASMC | IL | 12 Point Flange Screw (CounterBore) | Steel | Plain | 5/16-24 x 3 | 5/16-24x3 fine 12-point flange screw alloy pln b18.2.1 | 75 |
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| ASMC | IL | 12 Point Flange Screw (CounterBore) | Steel | Plain | 5/16-24 x 3 1/2 | 5/16-24x3 1/2 fine 12-point flange screw alloy pln b18.2.1 | 20 |
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| ASMC | IL | 12 Point Flange Screw (CounterBore) | Steel | Plain | 5/16-24 x 2 3/4 | 5/16-24x2 3/4 fine 12-point flange screw alloy pln b18.2.1 | 75 |
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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 | 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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| GLF | OH | 12 Point Flange Screw (CounterBore) | Superalloy (Inconel, Hastelloy, Alloy 20) | Plain | 5/16-18 x 2 1/2 | 5/16-18x2-1/2 12-pt flange bolt 17-4 ph s/s b18.2.1 | 8 |
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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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| THRDFAST | AL | 12 Point Flange Screw (CounterBore) | Steel | Plain | 5/16-18 x 1 | 12 pt counterbore screw b18.2.1 | 340 |
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