Drive Style Drive Style |
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Finish Finish |
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For Use In For Use In |
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Drill Bit Decimal Size Equivalent Drill Bit DecimalSize Equivalent |
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Drill Bit Size Drill Bit Size |
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DFARS (Defense Acquisition Regulations Supplement) DFARS (Defense AcquisitionRegulations Supplement) |
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About Tapping Screws
More
Steel Hex Head Thread-Cutting Screws for Metal
External Hex with Flange
External Hex with Serrated Flange
External Hex/Phillips with Flange
External Hex/Slotted with Flange
Serrated Flange
These steel screws are zinc plated to resist corrosion in wet environments. They have a hex head for a secure grip with a wrench and a flange to reduce the risk of crushing thin metal. Screws cut threads in drilled holes as they’re turned, so they require less driving torque and cause less stress on your material than thread forming screws. Length is measured from under the flange. Head height includes the flange.
Screws with serrations under the head grip the material surface for mild vibration resistance.
For technical drawings and 3-D models, click on a part number.
Head | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| Lg. | Wd. | Ht. | Flange Dia. | Drill Bit Size | Tapping Screw Type | For Use In | Pkg. Qty. | Pkg. | |
External Hex—Zinc-Plated Steel | |||||||||
4-40  | |||||||||
| 1/4" | 0.188" | 0.079" | 0.243" | No. 41 | F | Aluminum, Brass, Cast Iron, Sheet Metal | 100 | 000000000 | 00000 |
6-32 | |||||||||
| 1/4" | 0.25" | 0.118" | 0.328" | No. 31 | F | Aluminum, Brass, Cast Iron, Sheet Metal | 50 | 000000000 | 0000 |
| 3/8" | 0.25" | 0.118" | 0.328" | No. 31 | F | Aluminum, Brass, Cast Iron, Sheet Metal | 100 | 000000000 | 0000 |
| 1/2" | 0.25" | 0.118" | 0.328" | No. 31 | F | Aluminum, Brass, Cast Iron, Sheet Metal | 100 | 000000000 | 0000 |
| 3/4" | 0.25" | 0.118" | 0.328" | No. 31 | F | Aluminum, Brass, Cast Iron, Sheet Metal | 100 | 000000000 | 0000 |
| 1" | 0.25" | 0.118" | 0.328" | No. 31 | F | Aluminum, Brass, Cast Iron, Sheet Metal | 50 | 000000000 | 0000 |
8-32 | |||||||||
| 1/4" | 0.25" | 0.141" | 0.348" | No. 26 | F | Aluminum, Brass, Cast Iron, Sheet Metal | 100 | 000000000 | 0000 |
| 5/16" | 0.25" | 0.141" | 0.348" | No. 26 | F | Aluminum, Brass, Cast Iron, Sheet Metal | 50 | 000000000 | 0000 |
| 3/8" | 0.25" | 0.141" | 0.348" | No. 26 | F | Aluminum, Brass, Cast Iron, Sheet Metal | 100 | 000000000 | 0000 |
| 1/2" | 0.25" | 0.141" | 0.348" | No. 26 | F | Aluminum, Brass, Cast Iron, Sheet Metal | 100 | 000000000 | 0000 |
| 5/8" | 0.25" | 0.141" | 0.348" | No. 26 | F | Aluminum, Brass, Cast Iron, Sheet Metal | 100 | 000000000 | 00000 |
| 3/4" | 0.25" | 0.141" | 0.348" | No. 26 | F | Aluminum, Brass, Cast Iron, Sheet Metal | 50 | 000000000 | 0000 |
| 1 1/2" | 0.25" | 0.141" | 0.348" | No. 26 | F | Aluminum, Brass, Cast Iron, Sheet Metal | 25 | 000000000 | 0000 |
10-24 | |||||||||
| 3/8" | 0.313" | 0.151" | 0.414" | No. 19 | F | Aluminum, Brass, Cast Iron, Sheet Metal | 100 | 000000000 | 0000 |
| 1/2" | 0.313" | 0.151" | 0.414" | No. 19 | F | Aluminum, Brass, Cast Iron, Sheet Metal | 100 | 000000000 | 0000 |
| 5/8" | 0.313" | 0.151" | 0.414" | No. 19 | F | Aluminum, Brass, Cast Iron, Sheet Metal | 100 | 000000000 | 00000 |
| 3/4" | 0.313" | 0.151" | 0.414" | No. 19 | F | Aluminum, Brass, Cast Iron, Sheet Metal | 50 | 000000000 | 0000 |
| 1" | 0.313" | 0.151" | 0.414" | No. 19 | F | Aluminum, Brass, Cast Iron, Sheet Metal | 50 | 000000000 | 0000 |
| 1 1/4" | 0.313" | 0.151" | 0.414" | No. 19 | F | Aluminum, Brass, Cast Iron, Sheet Metal | 10 | 000000000 | 0000 |
| 1 1/2" | 0.313" | 0.151" | 0.414" | No. 19 | F | Aluminum, Brass, Cast Iron, Sheet Metal | 10 | 000000000 | 0000 |
| 2" | 0.313" | 0.151" | 0.414" | No. 19 | F | Aluminum, Brass, Cast Iron, Sheet Metal | 10 | 000000000 | 0000 |
10-32 | |||||||||
| 1/4" | 0.313" | 0.151" | 0.414" | 11/64" | F | Aluminum, Brass, Cast Iron, Sheet Metal | 25 | 000000000 | 0000 |
| 5/16" | 0.313" | 0.151" | 0.414" | 11/64" | F | Aluminum, Brass, Cast Iron, Sheet Metal | 25 | 000000000 | 0000 |
| 3/8" | 0.313" | 0.151" | 0.414" | 11/64" | F | Aluminum, Brass, Cast Iron, Sheet Metal | 100 | 000000000 | 00000 |
| 1/2" | 0.313" | 0.151" | 0.414" | 11/64" | F | Aluminum, Brass, Cast Iron, Sheet Metal | 50 | 000000000 | 0000 |
| 3/4" | 0.313" | 0.151" | 0.414" | 11/64" | F | Aluminum, Brass, Cast Iron, Sheet Metal | 50 | 000000000 | 0000 |
12-24 | |||||||||
| 1/2" | 0.313" | 0.194" | 0.432" | No. 11 | F | Aluminum, Brass, Cast Iron, Sheet Metal | 50 | 000000000 | 0000 |
| 5/8" | 0.313" | 0.194" | 0.432" | No. 11 | F | Aluminum, Brass, Cast Iron, Sheet Metal | 25 | 000000000 | 00000 |
| 3/4" | 0.313" | 0.194" | 0.432" | No. 11 | F | Aluminum, Brass, Cast Iron, Sheet Metal | 25 | 000000000 | 0000 |
| 1" | 0.313" | 0.194" | 0.432" | No. 11 | F | Aluminum, Brass, Cast Iron, Sheet Metal | 10 | 000000000 | 0000 |
1/4"-20 | |||||||||
| 3/8" | 0.375" | 0.24" | 0.52" | No. 2 | F | Aluminum, Brass, Cast Iron, Sheet Metal | 50 | 000000000 | 0000 |
| 1/2" | 0.375" | 0.24" | 0.52" | No. 2 | F | Aluminum, Brass, Cast Iron, Sheet Metal | 50 | 000000000 | 00000 |
| 5/8" | 0.375" | 0.24" | 0.52" | No. 2 | F | Aluminum, Brass, Cast Iron, Sheet Metal | 25 | 000000000 | 0000 |
| 3/4" | 0.375" | 0.24" | 0.52" | No. 2 | F | Aluminum, Brass, Cast Iron, Sheet Metal | 25 | 000000000 | 0000 |
| 7/8" | 0.375" | 0.24" | 0.52" | No. 2 | F | Aluminum, Brass, Cast Iron, Sheet Metal | 10 | 000000000 | 0000 |
| 1" | 0.375" | 0.24" | 0.52" | No. 2 | F | Aluminum, Brass, Cast Iron, Sheet Metal | 25 | 000000000 | 0000 |
| 1 1/4" | 0.375" | 0.24" | 0.52" | No. 2 | F | Aluminum, Brass, Cast Iron, Sheet Metal | 25 | 000000000 | 0000 |
| 1 1/2" | 0.375" | 0.24" | 0.52" | No. 2 | F | Aluminum, Brass, Cast Iron, Sheet Metal | 25 | 000000000 | 0000 |
| 1 3/4" | 0.375" | 0.24" | 0.52" | No. 2 | F | Aluminum, Brass, Cast Iron, Sheet Metal | 10 | 000000000 | 0000 |
| 2" | 0.375" | 0.24" | 0.52" | No. 2 | F | Aluminum, Brass, Cast Iron, Sheet Metal | 10 | 000000000 | 0000 |
| 2 1/2" | 0.375" | 0.24" | 0.52" | No. 2 | F | Aluminum, Brass, Cast Iron, Sheet Metal | 5 | 000000000 | 0000 |
| 3" | 0.375" | 0.24" | 0.52" | No. 2 | F | Aluminum, Brass, Cast Iron, Sheet Metal | 5 | 000000000 | 0000 |
| 4" | 0.375" | 0.24" | 0.52" | No. 2 | F | Aluminum, Brass, Cast Iron, Sheet Metal | 1 | 000000000 | 0000 |
5/16"-18 | |||||||||
| 1/2" | 0.5" | 0.285" | 0.676" | K | F | Aluminum, Brass, Cast Iron, Sheet Metal | 25 | 000000000 | 00000 |
| 5/8" | 0.5" | 0.285" | 0.676" | K | F | Aluminum, Brass, Cast Iron, Sheet Metal | 25 | 000000000 | 00000 |
| 3/4" | 0.5" | 0.285" | 0.676" | K | F | Aluminum, Brass, Cast Iron, Sheet Metal | 25 | 000000000 | 00000 |
| 7/8" | 0.5" | 0.285" | 0.676" | K | F | Aluminum, Brass, Cast Iron, Sheet Metal | 5 | 000000000 | 0000 |
| 1" | 0.5" | 0.285" | 0.676" | K | F | Aluminum, Brass, Cast Iron, Sheet Metal | 25 | 000000000 | 00000 |
| 1 1/4" | 0.5" | 0.285" | 0.676" | K | F | Aluminum, Brass, Cast Iron, Sheet Metal | 25 | 000000000 | 00000 |
| 1 1/2" | 0.5" | 0.285" | 0.676" | K | F | Aluminum, Brass, Cast Iron, Sheet Metal | 10 | 000000000 | 0000 |
| 1 3/4" | 0.5" | 0.285" | 0.676" | K | F | Aluminum, Brass, Cast Iron, Sheet Metal | 10 | 000000000 | 0000 |
| 2" | 0.5" | 0.285" | 0.676" | K | F | Aluminum, Brass, Cast Iron, Sheet Metal | 5 | 000000000 | 0000 |
| 2 1/2" | 0.5" | 0.285" | 0.676" | K | F | Aluminum, Brass, Cast Iron, Sheet Metal | 5 | 000000000 | 0000 |
| 3" | 0.5" | 0.285" | 0.676" | K | F | Aluminum, Brass, Cast Iron, Sheet Metal | 5 | 000000000 | 0000 |
| 4" | 0.5" | 0.285" | 0.676" | K | F | Aluminum, Brass, Cast Iron, Sheet Metal | 1 | 000000000 | 0000 |
3/8"-16 | |||||||||
| 1/2" | 0.563" | 0.358" | 0.78" | R | F | Aluminum, Brass, Cast Iron, Sheet Metal | 10 | 000000000 | 0000 |
| 5/8" | 0.563" | 0.358" | 0.78" | R | F | Aluminum, Brass, Cast Iron, Sheet Metal | 10 | 000000000 | 0000 |
| 3/4" | 0.563" | 0.358" | 0.78" | R | F | Aluminum, Brass, Cast Iron, Sheet Metal | 10 | 000000000 | 0000 |
| 1" | 0.563" | 0.358" | 0.78" | R | F | Aluminum, Brass, Cast Iron, Sheet Metal | 10 | 000000000 | 00000 |
| 1 1/4" | 0.563" | 0.358" | 0.78" | R | F | Aluminum, Brass, Cast Iron, Sheet Metal | 10 | 000000000 | 00000 |
| 1 1/2" | 0.563" | 0.358" | 0.78" | R | F | Aluminum, Brass, Cast Iron, Sheet Metal | 10 | 000000000 | 00000 |
| 1 3/4" | 0.563" | 0.358" | 0.78" | R | F | Aluminum, Brass, Cast Iron, Sheet Metal | 1 | 000000000 | 0000 |
| 2" | 0.563" | 0.358" | 0.78" | R | F | Aluminum, Brass, Cast Iron, Sheet Metal | 10 | 000000000 | 00000 |
| 2 1/4" | 0.563" | 0.358" | 0.78" | R | F | Aluminum, Brass, Cast Iron, Sheet Metal | 1 | 000000000 | 0000 |
| 2 1/2" | 0.563" | 0.358" | 0.78" | R | F | Aluminum, Brass, Cast Iron, Sheet Metal | 1 | 000000000 | 0000 |
| 3" | 0.563" | 0.358" | 0.78" | R | F | Aluminum, Brass, Cast Iron, Sheet Metal | 1 | 000000000 | 0000 |
| 3 1/2" | 0.563" | 0.358" | 0.78" | R | F | Aluminum, Brass, Cast Iron, Sheet Metal | 1 | 000000000 | 0000 |
| 4" | 0.563" | 0.358" | 0.78" | R | F | Aluminum, Brass, Cast Iron, Sheet Metal | 1 | 000000000 | 0000 |
| 5" | 0.563" | 0.358" | 0.78" | R | F | Aluminum, Brass, Cast Iron, Sheet Metal | 1 | 000000000 | 0000 |
1/2"-13 | |||||||||
| 3/4" | 0.75" | 0.485" | 1.04" | 29/64" | F | Aluminum, Brass, Cast Iron, Sheet Metal | 1 | 000000000 | 0000 |
| 1" | 0.75" | 0.485" | 1.04" | 29/64" | F | Aluminum, Brass, Cast Iron, Sheet Metal | 1 | 000000000 | 0000 |
| 1 1/4" | 0.75" | 0.485" | 1.04" | 29/64" | F | Aluminum, Brass, Cast Iron, Sheet Metal | 1 | 000000000 | 0000 |
| 1 1/2" | 0.75" | 0.485" | 1.04" | 29/64" | F | Aluminum, Brass, Cast Iron, Sheet Metal | 1 | 000000000 | 0000 |
| 1 3/4" | 0.75" | 0.485" | 1.04" | 29/64" | F | Aluminum, Brass, Cast Iron, Sheet Metal | 1 | 000000000 | 0000 |
| 2" | 0.75" | 0.485" | 1.04" | 29/64" | F | Aluminum, Brass, Cast Iron, Sheet Metal | 1 | 000000000 | 0000 |
| 2 1/2" | 0.75" | 0.485" | 1.04" | 29/64" | F | Aluminum, Brass, Cast Iron, Sheet Metal | 1 | 000000000 | 0000 |
| 3" | 0.75" | 0.485" | 1.04" | 29/64" | F | Aluminum, Brass, Cast Iron, Sheet Metal | 1 | 000000000 | 00000 |
| 4" | 0.75" | 0.485" | 1.04" | 29/64" | F | Aluminum, Brass, Cast Iron, Sheet Metal | 1 | 000000000 | 00000 |
External Hex with Serrated Flange—Zinc-Plated Steel | |||||||||
8-32 | |||||||||
| 3/8" | 0.25" | 0.141" | 0.348" | No. 26 | F | Aluminum, Brass, Cast Iron, Sheet Metal | 50 | 000000000 | 0000 |
| 1/2" | 0.25" | 0.141" | 0.348" | No. 26 | F | Aluminum, Brass, Cast Iron, Sheet Metal | 50 | 000000000 | 0000 |
| 5/8" | 0.25" | 0.141" | 0.348" | No. 26 | F | Aluminum, Brass, Cast Iron, Sheet Metal | 50 | 000000000 | 0000 |
10-24 | |||||||||
| 3/8" | 0.313" | 0.151" | 0.414" | No. 19 | F | Aluminum, Brass, Cast Iron, Sheet Metal | 50 | 000000000 | 0000 |
10-32 | |||||||||
| 1/2" | 0.313" | 0.151" | 0.414" | 11/64" | F | Aluminum, Brass, Cast Iron, Sheet Metal | 25 | 000000000 | 0000 |
12-24 | |||||||||
| 3/4" | 0.313" | 0.194" | 0.432" | No. 11 | F | Aluminum, Brass, Cast Iron, Sheet Metal | 25 | 000000000 | 0000 |
| 1" | 0.313" | 0.194" | 0.432" | No. 11 | F | Aluminum, Brass, Cast Iron, Sheet Metal | 25 | 000000000 | 0000 |
1/4"-20 | |||||||||
| 3/8" | 0.375" | 0.24" | 0.52" | No. 2 | F | Aluminum, Brass, Cast Iron, Sheet Metal | 25 | 000000000 | 0000 |
| 1/2" | 0.375" | 0.24" | 0.52" | No. 2 | F | Aluminum, Brass, Cast Iron, Sheet Metal | 25 | 000000000 | 00000 |
| 5/8" | 0.375" | 0.24" | 0.52" | No. 2 | F | Aluminum, Brass, Cast Iron, Sheet Metal | 10 | 000000000 | 0000 |
| 3/4" | 0.375" | 0.24" | 0.52" | No. 2 | F | Aluminum, Brass, Cast Iron, Sheet Metal | 10 | 000000000 | 0000 |
| 1" | 0.375" | 0.24" | 0.52" | No. 2 | F | Aluminum, Brass, Cast Iron, Sheet Metal | 10 | 000000000 | 0000 |
| 1 1/2" | 0.375" | 0.24" | 0.52" | No. 2 | F | Aluminum, Brass, Cast Iron, Sheet Metal | 10 | 000000000 | 0000 |
5/16"-18 | |||||||||
| 1/2" | 0.5" | 0.285" | 0.676" | K | F | Aluminum, Brass, Cast Iron, Sheet Metal | 5 | 000000000 | 0000 |
| 1" | 0.5" | 0.285" | 0.676" | K | F | Aluminum, Brass, Cast Iron, Sheet Metal | 5 | 000000000 | 0000 |
| 1 1/4" | 0.5" | 0.285" | 0.676" | K | F | Aluminum, Brass, Cast Iron, Sheet Metal | 5 | 000000000 | 0000 |
3/8"-16 | |||||||||
| 3/4" | 0.563" | 0.358" | 0.78" | R | F | Aluminum, Brass, Cast Iron, Sheet Metal | 5 | 000000000 | 0000 |
| 1" | 0.563" | 0.358" | 0.78" | R | F | Aluminum, Brass, Cast Iron, Sheet Metal | 5 | 000000000 | 0000 |
| 1 1/4" | 0.563" | 0.358" | 0.78" | R | F | Aluminum, Brass, Cast Iron, Sheet Metal | 5 | 000000000 | 0000 |
| 1 1/2" | 0.563" | 0.358" | 0.78" | R | F | Aluminum, Brass, Cast Iron, Sheet Metal | 5 | 000000000 | 0000 |
| 2" | 0.563" | 0.358" | 0.78" | R | F | Aluminum, Brass, Cast Iron, Sheet Metal | 1 | 000000000 | 0000 |
| 2 1/2" | 0.563" | 0.358" | 0.78" | R | F | Aluminum, Brass, Cast Iron, Sheet Metal | 1 | 000000000 | 0000 |
| 3" | 0.563" | 0.358" | 0.78" | R | F | Aluminum, Brass, Cast Iron, Sheet Metal | 1 | 000000000 | 0000 |
1/2"-13 | |||||||||
| 1" | 0.75" | 0.485" | 1.04" | 29/64" | F | Aluminum, Brass, Cast Iron, Sheet Metal | 1 | 000000000 | 0000 |
| 1 1/4" | 0.75" | 0.485" | 1.04" | 29/64" | F | Aluminum, Brass, Cast Iron, Sheet Metal | 1 | 000000000 | 0000 |
| 1 1/2" | 0.75" | 0.485" | 1.04" | 29/64" | F | Aluminum, Brass, Cast Iron, Sheet Metal | 1 | 000000000 | 0000 |
| 3" | 0.75" | 0.485" | 1.04" | 29/64" | F | Aluminum, Brass, Cast Iron, Sheet Metal | 1 | 000000000 | 00000 |
External Hex/Phillips—Zinc-Plated Steel | |||||||||
8-32 | |||||||||
| 3/8" | 0.25" | 0.141" | 0.348" | No. 26 | F | Aluminum, Brass, Cast Iron, Sheet Metal | 50 | 000000000 | 0000 |
| 1/2" | 0.25" | 0.141" | 0.348" | No. 26 | F | Aluminum, Brass, Cast Iron, Sheet Metal | 25 | 000000000 | 0000 |
External Hex/Slotted—Zinc-Plated Steel | |||||||||
4-40 | |||||||||
| 1/4" | 0.188" | 0.079" | 0.243" | No. 41 | F | Aluminum, Brass, Cast Iron, Sheet Metal | 100 | 000000000 | 0000 |
| 3/8" | 0.188" | 0.079" | 0.243" | No. 41 | F | Aluminum, Brass, Cast Iron, Sheet Metal | 100 | 000000000 | 0000 |
6-32 | |||||||||
| 1/4" | 0.25" | 0.118" | 0.328" | No. 31 | F | Aluminum, Brass, Cast Iron, Sheet Metal | 100 | 000000000 | 0000 |
| 5/16" | 0.25" | 0.118" | 0.328" | No. 31 | F | Aluminum, Brass, Cast Iron, Sheet Metal | 100 | 000000000 | 0000 |
| 3/8" | 0.25" | 0.118" | 0.328" | No. 31 | F | Aluminum, Brass, Cast Iron, Sheet Metal | 100 | 000000000 | 0000 |
| 1/2" | 0.25" | 0.118" | 0.328" | No. 31 | F | Aluminum, Brass, Cast Iron, Sheet Metal | 100 | 000000000 | 0000 |
| 3/4" | 0.25" | 0.118" | 0.328" | No. 31 | F | Aluminum, Brass, Cast Iron, Sheet Metal | 100 | 000000000 | 0000 |
| 1" | 0.25" | 0.118" | 0.328" | No. 31 | F | Aluminum, Brass, Cast Iron, Sheet Metal | 100 | 000000000 | 0000 |
| 1 1/4" | 0.25" | 0.118" | 0.328" | No. 31 | F | Aluminum, Brass, Cast Iron, Sheet Metal | 25 | 000000000 | 0000 |
| 2" | 0.25" | 0.118" | 0.328" | No. 31 | F | Aluminum, Brass, Cast Iron, Sheet Metal | 25 | 000000000 | 0000 |
8-32 | |||||||||
| 1/4" | 0.25" | 0.141" | 0.348" | No. 26 | F | Aluminum, Brass, Cast Iron, Sheet Metal | 100 | 000000000 | 0000 |
| 5/16" | 0.25" | 0.141" | 0.348" | No. 26 | F | Aluminum, Brass, Cast Iron, Sheet Metal | 100 | 000000000 | 0000 |
| 3/8" | 0.25" | 0.141" | 0.348" | No. 26 | F | Aluminum, Brass, Cast Iron, Sheet Metal | 100 | 000000000 | 0000 |
| 1/2" | 0.25" | 0.141" | 0.348" | No. 26 | F | Aluminum, Brass, Cast Iron, Sheet Metal | 100 | 000000000 | 0000 |
| 5/8" | 0.25" | 0.141" | 0.348" | No. 26 | F | Aluminum, Brass, Cast Iron, Sheet Metal | 100 | 000000000 | 0000 |
| 3/4" | 0.25" | 0.141" | 0.348" | No. 26 | F | Aluminum, Brass, Cast Iron, Sheet Metal | 100 | 000000000 | 00000 |
| 7/8" | 0.25" | 0.141" | 0.348" | No. 26 | F | Aluminum, Brass, Cast Iron, Sheet Metal | 50 | 000000000 | 0000 |
| 1" | 0.25" | 0.141" | 0.348" | No. 26 | F | Aluminum, Brass, Cast Iron, Sheet Metal | 50 | 000000000 | 0000 |
| 1 1/4" | 0.25" | 0.141" | 0.348" | No. 26 | F | Aluminum, Brass, Cast Iron, Sheet Metal | 25 | 000000000 | 0000 |
| 1 1/2" | 0.25" | 0.141" | 0.348" | No. 26 | F | Aluminum, Brass, Cast Iron, Sheet Metal | 25 | 000000000 | 0000 |
| 2" | 0.25" | 0.141" | 0.348" | No. 26 | F | Aluminum, Brass, Cast Iron, Sheet Metal | 25 | 000000000 | 0000 |
| 2 1/2" | 0.25" | 0.141" | 0.348" | No. 26 | F | Aluminum, Brass, Cast Iron, Sheet Metal | 25 | 000000000 | 00000 |
10-24 | |||||||||
| 1/4" | 0.313" | 0.151" | 0.414" | No. 19 | F | Aluminum, Brass, Cast Iron, Sheet Metal | 25 | 000000000 | 0000 |
| 3/8" | 0.313" | 0.151" | 0.414" | No. 19 | F | Aluminum, Brass, Cast Iron, Sheet Metal | 100 | 000000000 | 00000 |
| 1/2" | 0.313" | 0.151" | 0.414" | No. 19 | F | Aluminum, Brass, Cast Iron, Sheet Metal | 100 | 000000000 | 00000 |
| 5/8" | 0.313" | 0.151" | 0.414" | No. 19 | F | Aluminum, Brass, Cast Iron, Sheet Metal | 100 | 000000000 | 00000 |
| 3/4" | 0.313" | 0.151" | 0.414" | No. 19 | F | Aluminum, Brass, Cast Iron, Sheet Metal | 100 | 000000000 | 00000 |
| 1" | 0.313" | 0.151" | 0.414" | No. 19 | F | Aluminum, Brass, Cast Iron, Sheet Metal | 100 | 000000000 | 00000 |
| 1 1/4" | 0.313" | 0.151" | 0.414" | No. 19 | F | Aluminum, Brass, Cast Iron, Sheet Metal | 25 | 000000000 | 0000 |
| 1 1/2" | 0.313" | 0.151" | 0.414" | No. 19 | F | Aluminum, Brass, Cast Iron, Sheet Metal | 25 | 000000000 | 0000 |
| 2" | 0.313" | 0.151" | 0.414" | No. 19 | F | Aluminum, Brass, Cast Iron, Sheet Metal | 10 | 000000000 | 0000 |
| 2 1/2" | 0.313" | 0.151" | 0.414" | No. 19 | F | Aluminum, Brass, Cast Iron, Sheet Metal | 10 | 000000000 | 0000 |
10-32 | |||||||||
| 1/4" | 0.313" | 0.151" | 0.414" | 11/64" | F | Aluminum, Brass, Cast Iron, Sheet Metal | 100 | 000000000 | 00000 |
| 3/8" | 0.313" | 0.151" | 0.414" | 11/64" | F | Aluminum, Brass, Cast Iron, Sheet Metal | 100 | 000000000 | 00000 |
| 1/2" | 0.313" | 0.151" | 0.414" | 11/64" | F | Aluminum, Brass, Cast Iron, Sheet Metal | 100 | 000000000 | 00000 |
| 5/8" | 0.313" | 0.151" | 0.414" | 11/64" | F | Aluminum, Brass, Cast Iron, Sheet Metal | 100 | 000000000 | 00000 |
| 3/4" | 0.313" | 0.151" | 0.414" | 11/64" | F | Aluminum, Brass, Cast Iron, Sheet Metal | 100 | 000000000 | 00000 |
| 1" | 0.313" | 0.151" | 0.414" | 11/64" | F | Aluminum, Brass, Cast Iron, Sheet Metal | 100 | 000000000 | 00000 |
| 1 1/4" | 0.313" | 0.151" | 0.414" | 11/64" | F | Aluminum, Brass, Cast Iron, Sheet Metal | 25 | 000000000 | 0000 |
| 1 1/2" | 0.313" | 0.151" | 0.414" | 11/64" | F | Aluminum, Brass, Cast Iron, Sheet Metal | 25 | 000000000 | 0000 |
| 1 3/4" | 0.313" | 0.151" | 0.414" | 11/64" | F | Aluminum, Brass, Cast Iron, Sheet Metal | 10 | 000000000 | 0000 |
| 2" | 0.313" | 0.151" | 0.414" | 11/64" | F | Aluminum, Brass, Cast Iron, Sheet Metal | 10 | 000000000 | 0000 |
| 2 1/2" | 0.313" | 0.151" | 0.414" | 11/64" | F | Aluminum, Brass, Cast Iron, Sheet Metal | 10 | 000000000 | 0000 |
12-24 | |||||||||
| 3/8" | 0.313" | 0.194" | 0.432" | No. 11 | F | Aluminum, Brass, Cast Iron, Sheet Metal | 25 | 000000000 | 0000 |
| 1/2" | 0.313" | 0.194" | 0.432" | No. 11 | F | Aluminum, Brass, Cast Iron, Sheet Metal | 50 | 000000000 | 0000 |
| 5/8" | 0.313" | 0.194" | 0.432" | No. 11 | F | Aluminum, Brass, Cast Iron, Sheet Metal | 25 | 000000000 | 0000 |
| 3/4" | 0.313" | 0.194" | 0.432" | No. 11 | F | Aluminum, Brass, Cast Iron, Sheet Metal | 25 | 000000000 | 0000 |
| 1" | 0.313" | 0.194" | 0.432" | No. 11 | F | Aluminum, Brass, Cast Iron, Sheet Metal | 25 | 000000000 | 0000 |
| 1 1/4" | 0.313" | 0.194" | 0.432" | No. 11 | F | Aluminum, Brass, Cast Iron, Sheet Metal | 10 | 000000000 | 0000 |
| 1 1/2" | 0.313" | 0.194" | 0.432" | No. 11 | F | Aluminum, Brass, Cast Iron, Sheet Metal | 10 | 000000000 | 0000 |
| 2" | 0.313" | 0.194" | 0.432" | No. 11 | F | Aluminum, Brass, Cast Iron, Sheet Metal | 10 | 000000000 | 0000 |
1/4"-20 | |||||||||
| 3/8" | 0.375" | 0.24" | 0.52" | No. 2 | F | Aluminum, Brass, Cast Iron, Sheet Metal | 50 | 000000000 | 00000 |
| 1/2" | 0.375" | 0.24" | 0.52" | No. 2 | F | Aluminum, Brass, Cast Iron, Sheet Metal | 50 | 000000000 | 00000 |
| 5/8" | 0.375" | 0.24" | 0.52" | No. 2 | F | Aluminum, Brass, Cast Iron, Sheet Metal | 50 | 000000000 | 00000 |
| 3/4" | 0.375" | 0.24" | 0.52" | No. 2 | F | Aluminum, Brass, Cast Iron, Sheet Metal | 50 | 000000000 | 00000 |
| 7/8" | 0.375" | 0.24" | 0.52" | No. 2 | F | Aluminum, Brass, Cast Iron, Sheet Metal | 10 | 000000000 | 0000 |
| 1" | 0.375" | 0.24" | 0.52" | No. 2 | F | Aluminum, Brass, Cast Iron, Sheet Metal | 25 | 000000000 | 0000 |
| 1 1/4" | 0.375" | 0.24" | 0.52" | No. 2 | F | Aluminum, Brass, Cast Iron, Sheet Metal | 25 | 000000000 | 0000 |
| 1 1/2" | 0.375" | 0.24" | 0.52" | No. 2 | F | Aluminum, Brass, Cast Iron, Sheet Metal | 25 | 000000000 | 0000 |
| 1 3/4" | 0.375" | 0.24" | 0.52" | No. 2 | F | Aluminum, Brass, Cast Iron, Sheet Metal | 10 | 000000000 | 0000 |
| 2" | 0.375" | 0.24" | 0.52" | No. 2 | F | Aluminum, Brass, Cast Iron, Sheet Metal | 25 | 000000000 | 00000 |
| 2 1/4" | 0.375" | 0.24" | 0.52" | No. 2 | F | Aluminum, Brass, Cast Iron, Sheet Metal | 5 | 000000000 | 0000 |
| 2 1/2" | 0.375" | 0.24" | 0.52" | No. 2 | F | Aluminum, Brass, Cast Iron, Sheet Metal | 5 | 000000000 | 0000 |
| 3" | 0.375" | 0.24" | 0.52" | No. 2 | F | Aluminum, Brass, Cast Iron, Sheet Metal | 5 | 000000000 | 0000 |
5/16"-18 | |||||||||
| 1/2" | 0.5" | 0.285" | 0.676" | K | F | Aluminum, Brass, Cast Iron, Sheet Metal | 10 | 000000000 | 0000 |
| 3/4" | 0.5" | 0.285" | 0.676" | K | F | Aluminum, Brass, Cast Iron, Sheet Metal | 10 | 000000000 | 0000 |
| 1" | 0.5" | 0.285" | 0.676" | K | F | Aluminum, Brass, Cast Iron, Sheet Metal | 10 | 000000000 | 0000 |
| 1 1/4" | 0.5" | 0.285" | 0.676" | K | F | Aluminum, Brass, Cast Iron, Sheet Metal | 10 | 000000000 | 0000 |
| 1 1/2" | 0.5" | 0.285" | 0.676" | K | F | Aluminum, Brass, Cast Iron, Sheet Metal | 5 | 000000000 | 0000 |
| 1 3/4" | 0.5" | 0.285" | 0.676" | K | F | Aluminum, Brass, Cast Iron, Sheet Metal | 5 | 000000000 | 0000 |
| 2" | 0.5" | 0.285" | 0.676" | K | F | Aluminum, Brass, Cast Iron, Sheet Metal | 5 | 000000000 | 0000 |
| 2 1/4" | 0.5" | 0.285" | 0.676" | K | F | Aluminum, Brass, Cast Iron, Sheet Metal | 5 | 000000000 | 0000 |
| 2 1/2" | 0.5" | 0.285" | 0.676" | K | F | Aluminum, Brass, Cast Iron, Sheet Metal | 1 | 000000000 | 0000 |
| 3" | 0.5" | 0.285" | 0.676" | K | F | Aluminum, Brass, Cast Iron, Sheet Metal | 1 | 000000000 | 0000 |
3/8"-16 | |||||||||
| 1/2" | 0.563" | 0.358" | 0.78" | R | F | Aluminum, Brass, Cast Iron, Sheet Metal | 5 | 000000000 | 0000 |
| 5/8" | 0.563" | 0.358" | 0.78" | R | F | Aluminum, Brass, Cast Iron, Sheet Metal | 5 | 000000000 | 0000 |
| 3/4" | 0.563" | 0.358" | 0.78" | R | F | Aluminum, Brass, Cast Iron, Sheet Metal | 5 | 000000000 | 0000 |
| 1" | 0.563" | 0.358" | 0.78" | R | F | Aluminum, Brass, Cast Iron, Sheet Metal | 5 | 000000000 | 0000 |
| 1 1/4" | 0.563" | 0.358" | 0.78" | R | F | Aluminum, Brass, Cast Iron, Sheet Metal | 5 | 000000000 | 0000 |
| 1 1/2" | 0.563" | 0.358" | 0.78" | R | F | Aluminum, Brass, Cast Iron, Sheet Metal | 5 | 000000000 | 0000 |
| 1 3/4" | 0.563" | 0.358" | 0.78" | R | F | Aluminum, Brass, Cast Iron, Sheet Metal | 1 | 000000000 | 0000 |
| 2" | 0.563" | 0.358" | 0.78" | R | F | Aluminum, Brass, Cast Iron, Sheet Metal | 1 | 000000000 | 0000 |
| 2 1/2" | 0.563" | 0.358" | 0.78" | R | F | Aluminum, Brass, Cast Iron, Sheet Metal | 1 | 000000000 | 0000 |
| 3" | 0.563" | 0.358" | 0.78" | R | F | Aluminum, Brass, Cast Iron, Sheet Metal | 1 | 000000000 | 0000 |
| 4" | 0.563" | 0.358" | 0.78" | R | F | Aluminum, Brass, Cast Iron, Sheet Metal | 1 | 000000000 | 0000 |
Stainless Steel Hex Head Thread-Cutting Screws for Metal
Made from 410 stainless steel, these screws are strong, wear resistant, and mildly chemical resistant. They have a hex head for a secure grip with a wrench and a flange to reduce the risk of crushing thin metal. Screws cut threads in drilled holes as they’re turned, so they require less driving torque and cause less stress on your material than thread forming screws. Not for use with aluminum. Length is measured from under the flange. Head height includes the flange.
For technical drawings and 3-D models, click on a part number.
Head | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| Lg. | Wd. | Ht. | Flange Dia. | Drill Bit Size | Tapping Screw Type | For Use In | Pkg. Qty. | Pkg. | |
410 Stainless Steel | |||||||||
8-32 | |||||||||
| 1/4" | 0.25" | 0.141" | 0.348" | No. 26 | F | Brass, Cast Iron, Sheet Metal | 100 | 000000000 | 00000 |
| 3/8" | 0.25" | 0.141" | 0.348" | No. 26 | F | Brass, Cast Iron, Sheet Metal | 100 | 000000000 | 0000 |
| 1/2" | 0.25" | 0.141" | 0.348" | No. 26 | F | Brass, Cast Iron, Sheet Metal | 100 | 000000000 | 0000 |
10-24 | |||||||||
| 3/8" | 0.313" | 0.151" | 0.414" | No. 17 | F | Brass, Cast Iron, Sheet Metal | 100 | 000000000 | 0000 |
| 1/2" | 0.313" | 0.151" | 0.414" | No. 17 | F | Brass, Cast Iron, Sheet Metal | 100 | 000000000 | 0000 |
| 5/8" | 0.313" | 0.151" | 0.414" | No. 17 | F | Brass, Cast Iron, Sheet Metal | 100 | 000000000 | 0000 |
| 3/4" | 0.313" | 0.151" | 0.414" | No. 17 | F | Brass, Cast Iron, Sheet Metal | 100 | 000000000 | 00000 |
| 1" | 0.313" | 0.151" | 0.414" | No. 17 | F | Brass, Cast Iron, Sheet Metal | 100 | 000000000 | 00000 |
| 1 1/4" | 0.313" | 0.151" | 0.414" | No. 17 | F | Brass, Cast Iron, Sheet Metal | 50 | 000000000 | 0000 |
| 1 1/2" | 0.313" | 0.151" | 0.414" | No. 17 | F | Brass, Cast Iron, Sheet Metal | 50 | 000000000 | 0000 |
10-32 | |||||||||
| 3/8" | 0.313" | 0.151" | 0.414" | No. 17 | F | Brass, Cast Iron, Sheet Metal | 100 | 000000000 | 0000 |
| 1/2" | 0.313" | 0.151" | 0.414" | No. 17 | F | Brass, Cast Iron, Sheet Metal | 100 | 000000000 | 0000 |
| 5/8" | 0.313" | 0.151" | 0.414" | No. 17 | F | Brass, Cast Iron, Sheet Metal | 100 | 000000000 | 0000 |
| 3/4" | 0.313" | 0.151" | 0.414" | No. 17 | F | Brass, Cast Iron, Sheet Metal | 100 | 000000000 | 0000 |
| 1" | 0.313" | 0.151" | 0.414" | No. 17 | F | Brass, Cast Iron, Sheet Metal | 100 | 000000000 | 00000 |
| 1 1/4" | 0.313" | 0.151" | 0.414" | No. 17 | F | Brass, Cast Iron, Sheet Metal | 50 | 000000000 | 0000 |
| 1 1/2" | 0.313" | 0.151" | 0.414" | No. 17 | F | Brass, Cast Iron, Sheet Metal | 50 | 000000000 | 0000 |
12-24 | |||||||||
| 1/2" | 0.313" | 0.155" | 0.432" | No. 8 | F | Brass, Cast Iron, Sheet Metal | 50 | 000000000 | 0000 |
| 3/4" | 0.313" | 0.155" | 0.432" | No. 8 | F | Brass, Cast Iron, Sheet Metal | 50 | 000000000 | 0000 |
| 1" | 0.313" | 0.155" | 0.432" | No. 8 | F | Brass, Cast Iron, Sheet Metal | 50 | 000000000 | 0000 |
| 1 1/4" | 0.313" | 0.155" | 0.432" | No. 8 | F | Brass, Cast Iron, Sheet Metal | 25 | 000000000 | 0000 |
| 1 1/2" | 0.313" | 0.155" | 0.432" | No. 8 | F | Brass, Cast Iron, Sheet Metal | 25 | 000000000 | 0000 |
1/4"-20 | |||||||||
| 3/8" | 0.375" | 0.19" | 0.52" | No. 1 | F | Brass, Cast Iron, Sheet Metal | 50 | 000000000 | 0000 |
| 1/2" | 0.375" | 0.24" | 0.52" | No. 1 | F | Brass, Cast Iron, Sheet Metal | 50 | 000000000 | 0000 |
| 5/8" | 0.375" | 0.19" | 0.52" | No. 1 | F | Brass, Cast Iron, Sheet Metal | 50 | 000000000 | 00000 |
| 3/4" | 0.375" | 0.24" | 0.52" | No. 1 | F | Brass, Cast Iron, Sheet Metal | 50 | 000000000 | 00000 |
| 1" | 0.375" | 0.24" | 0.52" | No. 1 | F | Brass, Cast Iron, Sheet Metal | 50 | 000000000 | 00000 |
| 1 1/4" | 0.375" | 0.24" | 0.52" | No. 1 | F | Brass, Cast Iron, Sheet Metal | 50 | 000000000 | 00000 |
| 1 1/2" | 0.375" | 0.24" | 0.52" | No. 1 | F | Brass, Cast Iron, Sheet Metal | 25 | 000000000 | 0000 |
| 2" | 0.375" | 0.19" | 0.52" | No. 1 | F | Brass, Cast Iron, Sheet Metal | 25 | 000000000 | 0000 |
5/16"-18 | |||||||||
| 3/4" | 0.5" | 0.23" | 0.676" | L | F | Brass, Cast Iron, Sheet Metal | 25 | 000000000 | 00000 |
| 1" | 0.5" | 0.23" | 0.676" | L | F | Brass, Cast Iron, Sheet Metal | 25 | 000000000 | 00000 |
| 1 1/4" | 0.5" | 0.23" | 0.676" | L | F | Brass, Cast Iron, Sheet Metal | 10 | 000000000 | 0000 |
| 1 1/2" | 0.5" | 0.23" | 0.676" | L | F | Brass, Cast Iron, Sheet Metal | 10 | 000000000 | 0000 |
| 2" | 0.5" | 0.23" | 0.676" | L | F | Brass, Cast Iron, Sheet Metal | 10 | 000000000 | 0000 |
Electrical Grounding Screws
The green color identifies these as grounding screws. They have a flange that provides a wide flat surface for making solid electrical connections. Screws cut threads in drilled holes as they’re turned, so they require less driving torque and cause less stress on your material than thread forming screws. Length is measured from under the flange. Head height includes the flange.
For technical drawings and 3-D models, click on a part number.
Head | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| Lg. | Wd. | Ht. | Flange Dia. | Drill Bit Size | Tapping Screw Type | For Use In | Pkg. Qty. | Pkg. | |
Green-Dyed Zinc-Plated Steel | |||||||||
6-32 | |||||||||
| 1/4" | 0.25" | 0.118" | 0.328" | No. 31 | F | Aluminum, Brass, Sheet Metal, Steel | 25 | 000000000 | 00000 |
| 3/8" | 0.25" | 0.118" | 0.328" | No. 31 | F | Aluminum, Brass, Sheet Metal, Steel | 25 | 000000000 | 0000 |
8-32 | |||||||||
| 1/4" | 0.25" | 0.141" | 0.348" | No. 26 | F | Aluminum, Brass, Sheet Metal, Steel | 25 | 000000000 | 0000 |
| 5/16" | 0.25" | 0.141" | 0.348" | No. 26 | F | Aluminum, Brass, Sheet Metal, Steel | 25 | 000000000 | 0000 |
| 3/8" | 0.25" | 0.141" | 0.348" | No. 26 | F | Aluminum, Brass, Sheet Metal, Steel | 25 | 000000000 | 0000 |
| 1/2" | 0.25" | 0.141" | 0.348" | No. 26 | F | Aluminum, Brass, Sheet Metal, Steel | 25 | 000000000 | 0000 |
10-24 | |||||||||
| 3/8" | 0.313" | 0.151" | 0.414" | No. 16 | F | Aluminum, Brass, Sheet Metal, Steel | 25 | 000000000 | 0000 |
| 1/2" | 0.313" | 0.151" | 0.414" | No. 16 | F | Aluminum, Brass, Sheet Metal, Steel | 25 | 000000000 | 0000 |
10-32 | |||||||||
| 1/4" | 0.313" | 0.151" | 0.414" | No. 17 | F | Aluminum, Brass, Sheet Metal, Steel | 25 | 000000000 | 0000 |
| 5/16" | 0.313" | 0.151" | 0.414" | No. 17 | F | Aluminum, Brass, Sheet Metal, Steel | 25 | 000000000 | 0000 |
| 3/8" | 0.313" | 0.151" | 0.414" | No. 17 | F | Aluminum, Brass, Sheet Metal, Steel | 25 | 000000000 | 0000 |
| 1/2" | 0.313" | 0.151" | 0.414" | No. 17 | F | Aluminum, Brass, Sheet Metal, Steel | 25 | 000000000 | 0000 |
| 3/4" | 0.313" | 0.151" | 0.414" | No. 17 | F | Aluminum, Brass, Sheet Metal, Steel | 25 | 000000000 | 00000 |