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3/8 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
52 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 | ||||||||
| 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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| GLF | OH | 12 Point Flange Screw (CounterBore) | Superalloy (Inconel, Hastelloy, Alloy 20) | Plain | 3/8-24 x 2 1/4 | 3/8-24x2-1/4 12-pt flange bolt 17-4 ph s/s b18.2.1 () () () | 50 |
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| GLF | OH | 12 Point Flange Screw (CounterBore) | Superalloy (Inconel, Hastelloy, Alloy 20) | Plain | 3/8-24 x 2 | 3/8-24x2 12-pt flange bolt 17-4 ph s/s b18.2.1 () () () | 49 |
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| GLF | OH | 12 Point Flange Screw (CounterBore) | Superalloy (Inconel, Hastelloy, Alloy 20) | Plain | 3/8-16 x 2 | 3/8-16x2 12-pt flange bolt 17-4 ph s/s 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 | 3/8-16 x 1 | 3/8-16x1 12 pt counterbore bolt b18.2.1 | 50 |
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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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| 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 | 100 |
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| Ababa | CA | 12 Point Flange Screw (CounterBore) | Steel | Plain | 3/8-24 x 2 1/4 | 3/8-24 x 2 1/4 12 point cap screw alloy partial thread b18.2.1 | 183 |
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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 | 3/8-16 x 2 1/4 | 3/8-16 x 2 1/4 12 point cap screw alloy b18.2.1 | 10 |
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| Ababa | CA | 12 Point Flange Screw (CounterBore) | Steel | Plain | 3/8-24 x 2 3/4 | 3/8-24 x 2 3/4 12 point cap screw alloy b18.2.1 | 37 |
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| Ababa | CA | 12 Point Flange Screw (CounterBore) | Steel | Plain | 3/8-24 x 3 | 3/8-24 x 3 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 3 1/2 | 3/8-24 x 3 1/2 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 3/4 | 3/8-24 x 3/4 12 point cap screw alloy b18.2.1 | 90 |
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| Ababa | CA | 12 Point Flange Screw (CounterBore) | Steel | Plain | 3/8-24 x 7/8 | 3/8-24 x 7/8 12 point cap screw alloy b18.2.1 | 41 |
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| Ababa | CA | 12 Point Flange Screw (CounterBore) | Steel | Plain | 3/8-16 x 1 1/4 | 3/8-16 x 1 1/4 12 point cap screw alloy b18.2.1 | 3 |
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| Ababa | CA | 12 Point Flange Screw (CounterBore) | Steel | Plain | 3/8-24 x 2 1/4 | 3/8-24 x 2 1/4 12 point cap screw full thrd alloy b18.2.1 | 90 |
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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 | 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 | 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 | 3/8-24 x 3/4 | fine 12-point fl/b b18.2.1 | 251 |
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| ASMC | IL | 12 Point Flange Screw (CounterBore) | Steel | Plain | 3/8-24 x 4 1/2 | 3/8-24x4 1/2 fine 12-point flange screw alloy pln b18.2.1 | 6 |
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| ASMC | IL | 12 Point Flange Screw (CounterBore) | Steel | Plain | 3/8-16 x 1 1/4 | 3/8-16x1 1/4 coarse 12-point flange screw alloy pln b18.2.1 | 82 |
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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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| 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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| Ababa | CA | 12 Point Flange Screw (CounterBore) | Steel | Plain | 3/8-16 x 2 | 3/8-16 x 2 12 point cap screw alloy b18.2.1 | 56 |
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| Ababa | CA | 12 Point Flange Screw (CounterBore) | Steel | Plain | 3/8-16 x 2 1/4 | 3/8-16 x 2 1/4 12 point cap screw alloy b18.2.1 | 50 |
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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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| 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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| OSSCO | RI | 12 Point Flange Screw (CounterBore) | Grade 8 | Plain | 3/8-16 x 1 | 3/8-16x1 ferry ctrbore cap screw gr8 b18.2.1 | 13 |
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| OSSCO | RI | 12 Point Flange Screw (CounterBore) | Grade 8 | Plain | 3/8-24 x 1 | 3/8-24x1 ferry ctrbore cap screw gr8 b18.2.1 | 50 |
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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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| THRDFAST | MS | 12 Point Flange Screw (CounterBore) | Steel | Plain | 3/8-16 x 1 1/4 | 12 pt counterbore screw b18.2.1 | 204 |
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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 | 3/8-24 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 | 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 | 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 | 3/8-16 x 2 | 3/8-16 x 2 12 point flange bolt b18.2.1 | 54 |
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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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