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1/2-20 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
84 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 | 100 |
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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 | 400 |
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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 | ||||||||
| 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 | 1/2-20 x 2 | 1/2-20 x 2 12 point cap screw alloy b18.2.1 | 10 |
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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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| 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 | 1/2-20 x 2 | nf ferry c/s | 23 |
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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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| 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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| Cal Fastenrs | CA | 12 Point Flange Screw (CounterBore) | Steel | Plain | 1/2-20 x 1 | - 12-pt fl/b | 50 |
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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 | 1/2-20 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 | 1/2-20 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 | 1/2-20 x 4 | fine 12-point fl/b | 10 |
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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 | 100 |
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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 | 400 |
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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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| SBS | MA | 12 Point Flange Screw (CounterBore) | Steel | Zinc/Black | 1/2-20 x 7/8 | 1/2-20x7/8 12-point flange bolt blk zn | 6734 |
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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 | 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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| 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 | 1/2-20 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 | 1/2-20 x 1 3/4 | 12 pt countr-bor 1/2-20x1 3/4 (FINE THREAD) | 70 |
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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 |
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| 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 |
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| 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 |
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| 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 |
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| 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 |
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| 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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| System 22 | PA | 12 Point Flange Screw (CounterBore) | Superalloy (Inconel, Hastelloy, Alloy 20) | Plain | 1/2-20 x 3 | inconel 718 | 11 |
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| System 22 | PA | 12 Point Flange Screw (CounterBore) | Superalloy (Inconel, Hastelloy, Alloy 20) | Silver | 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 | 1/2-20 x 2 1/2 | 1/2-20 x 2 1/2 12 pt flange bolts b18.2.1 | 65 |
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| Bostwick | IN | 12 Point Flange Screw (CounterBore) | Steel | Plain | 1/2-20 x 2 1/2 | 1/2-20 x 2 1/2 12 pt. counterbore screw alloy b18.2.1 | 52 |
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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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| 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 |
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| Valley Nu | WA | 12 Point Flange Screw (CounterBore) | Steel | Plain | 1/2-20 x 1 3/4 | nf 12 pt fl/b pl | 45 |
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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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| Valley Nu | WA | 12 Point Flange Screw (CounterBore) | Steel | Plain | 1/2-20 x 2 | nf 12 pt fl/b pl | 20 |
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| Valley Nu | WA | 12 Point Flange Screw (CounterBore) | Steel | Plain | 1/2-20 x 1 1/2 | nf 12 pt fl/b pl | 17 |
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| Valley Nu | WA | 12 Point Flange Screw (CounterBore) | Steel | Plain | 1/2-20 x 2 3/4 | nf 12 pt fl/b pl | 30 |
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| Valley Nu | WA | 12 Point Flange Screw (CounterBore) | Steel | Plain | 1/2-20 x 3 | nf 12 pt fl/b pl | 24 |
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| 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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