Filter by
Rounded Head Style
Screw Size
Drive Style
Thread Size
Fastener Head Type
Thread Spacing
DFARS Specialty Metals
About Tapping Screws
More
Steel Rounded Head Thread-Cutting Screws for Metal
These steel screws are zinc plated to resist corrosion in wet environments. They 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 head.
Screws meet ASME B18.6.3 dimensional standards. They also meet SAE J933 for material quality.
For technical drawings and 3-D models, click on a part number.
Head | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Lg. | Dia. | Ht. | Drive Size | Drill Bit Size | Tapping Screw Type | For Use In | Specifications Met | Pkg. Qty. | Pkg. | |
Zinc-Plated Steel | ||||||||||
2-56  | ||||||||||
| 1/8" | 0.167" | 0.062" | No. 1 | No. 48 | F | Aluminum, Brass, Cast Iron, Sheet Metal | ASME B18.6.3, SAE J933 | 50 | 000000000 | 000000 |
| 3/16" | 0.167" | 0.062" | No. 1 | No. 49 | F | Aluminum, Brass, Cast Iron, Sheet Metal | ASME B18.6.3, SAE J933 | 100 | 000000000 | 0000 |
| 1/4" | 0.167" | 0.062" | No. 1 | No. 49 | F | Aluminum, Brass, Cast Iron, Sheet Metal | ASME B18.6.3, SAE J933 | 100 | 000000000 | 0000 |
| 5/16" | 0.167" | 0.062" | No. 1 | No. 48 | F | Aluminum, Brass, Cast Iron, Sheet Metal | ASME B18.6.3, SAE J933 | 50 | 000000000 | 00000 |
| 3/8" | 0.167" | 0.062" | No. 1 | No. 49 | F | Aluminum, Brass, Cast Iron, Sheet Metal | ASME B18.6.3, SAE J933 | 100 | 000000000 | 00000 |
| 7/16" | 0.167" | 0.062" | No. 1 | No. 48 | F | Aluminum, Brass, Cast Iron, Sheet Metal | ASME B18.6.3, SAE J933 | 50 | 000000000 | 00000 |
4-40 | ||||||||||
| 3/16" | 0.219" | 0.08" | No. 1 | No. 41 | F | Aluminum, Brass, Cast Iron, Sheet Metal | ASME B18.6.3, SAE J933 | 100 | 000000000 | 00000 |
| 1/4" | 0.219" | 0.08" | No. 1 | No. 41 | F | Aluminum, Brass, Cast Iron, Sheet Metal | ASME B18.6.3, SAE J933 | 100 | 000000000 | 0000 |
| 5/16" | 0.219" | 0.08" | No. 1 | No. 41 | F | Aluminum, Brass, Cast Iron, Sheet Metal | ASME B18.6.3, SAE J933 | 100 | 000000000 | 00000 |
| 3/8" | 0.219" | 0.08" | No. 1 | No. 41 | F | Aluminum, Brass, Cast Iron, Sheet Metal | ASME B18.6.3, SAE J933 | 100 | 000000000 | 00000 |
| 7/16" | 0.219" | 0.08" | No. 1 | No. 41 | F | Aluminum, Brass, Cast Iron, Sheet Metal | ASME B18.6.3, SAE J933 | 50 | 000000000 | 00000 |
| 1/2" | 0.219" | 0.08" | No. 1 | No. 41 | F | Aluminum, Brass, Cast Iron, Sheet Metal | ASME B18.6.3, SAE J933 | 100 | 000000000 | 0000 |
| 5/8" | 0.219" | 0.08" | No. 1 | No. 41 | F | Aluminum, Brass, Cast Iron, Sheet Metal | ASME B18.6.3, SAE J933 | 100 | 000000000 | 00000 |
| 3/4" | 0.219" | 0.08" | No. 1 | No. 41 | F | Aluminum, Brass, Cast Iron, Sheet Metal | ASME B18.6.3, SAE J933 | 100 | 000000000 | 00000 |
| 7/8" | 0.219" | 0.08" | No. 1 | No. 41 | F | Aluminum, Brass, Cast Iron, Sheet Metal | ASME B18.6.3, SAE J933 | 25 | 000000000 | 00000 |
| 1" | 0.219" | 0.08" | No. 1 | No. 41 | F | Aluminum, Brass, Cast Iron, Sheet Metal | ASME B18.6.3, SAE J933 | 50 | 000000000 | 00000 |
| 1 1/4" | 0.219" | 0.08" | No. 1 | No. 41 | F | Aluminum, Brass, Cast Iron, Sheet Metal | ASME B18.6.3, SAE J933 | 25 | 000000000 | 00000 |
5-40 | ||||||||||
| 1/4" | 0.245" | 0.089" | No. 2 | No. 35 | F | Aluminum, Brass, Cast Iron, Sheet Metal | ASME B18.6.3, SAE J933 | 25 | 000000000 | 0000 |
| 3/8" | 0.245" | 0.089" | No. 2 | No. 35 | F | Aluminum, Brass, Cast Iron, Sheet Metal | ASME B18.6.3, SAE J933 | 25 | 000000000 | 0000 |
6-32 | ||||||||||
| 3/16" | 0.27" | 0.097" | No. 2 | No. 31 | F | Aluminum, Brass, Cast Iron, Sheet Metal | ASME B18.6.3, SAE J933 | 100 | 000000000 | 00000 |
| 1/4" | 0.27" | 0.097" | No. 2 | No. 31 | F | Aluminum, Brass, Cast Iron, Sheet Metal | ASME B18.6.3, SAE J933 | 100 | 000000000 | 00000 |
| 5/16" | 0.27" | 0.097" | No. 2 | No. 31 | F | Aluminum, Brass, Cast Iron, Sheet Metal | ASME B18.6.3, SAE J933 | 100 | 000000000 | 00000 |
| 3/8" | 0.27" | 0.097" | No. 2 | No. 31 | F | Aluminum, Brass, Cast Iron, Sheet Metal | ASME B18.6.3, SAE J933 | 100 | 000000000 | 00000 |
| 7/16" | 0.27" | 0.097" | No. 2 | No. 31 | F | Aluminum, Brass, Cast Iron, Sheet Metal | ASME B18.6.3, SAE J933 | 100 | 000000000 | 00000 |
| 1/2" | 0.27" | 0.097" | No. 2 | No. 31 | F | Aluminum, Brass, Cast Iron, Sheet Metal | ASME B18.6.3, SAE J933 | 100 | 000000000 | 00000 |
| 5/8" | 0.27" | 0.097" | No. 2 | No. 31 | F | Aluminum, Brass, Cast Iron, Sheet Metal | ASME B18.6.3, SAE J933 | 100 | 000000000 | 00000 |
| 3/4" | 0.27" | 0.097" | No. 2 | No. 31 | F | Aluminum, Brass, Cast Iron, Sheet Metal | ASME B18.6.3, SAE J933 | 100 | 000000000 | 00000 |
| 7/8" | 0.27" | 0.097" | No. 2 | No. 31 | F | Aluminum, Brass, Cast Iron, Sheet Metal | ASME B18.6.3, SAE J933 | 100 | 000000000 | 00000 |
| 1" | 0.27" | 0.097" | No. 2 | No. 31 | F | Aluminum, Brass, Cast Iron, Sheet Metal | ASME B18.6.3, SAE J933 | 100 | 000000000 | 00000 |
| 1 1/4" | 0.27" | 0.097" | No. 2 | No. 31 | F | Aluminum, Brass, Cast Iron, Sheet Metal | ASME B18.6.3, SAE J933 | 50 | 000000000 | 00000 |
| 2" | 0.27" | 0.097" | No. 2 | No. 31 | F | Aluminum, Brass, Cast Iron, Sheet Metal | ASME B18.6.3, SAE J933 | 25 | 000000000 | 00000 |
8-32 | ||||||||||
| 1/4" | 0.322" | 0.115" | No. 2 | No. 26 | F | Aluminum, Brass, Cast Iron, Sheet Metal | ASME B18.6.3, SAE J933 | 100 | 000000000 | 00000 |
| 5/16" | 0.322" | 0.115" | No. 2 | No. 26 | F | Aluminum, Brass, Cast Iron, Sheet Metal | ASME B18.6.3, SAE J933 | 100 | 000000000 | 00000 |
| 3/8" | 0.322" | 0.115" | No. 2 | No. 26 | F | Aluminum, Brass, Cast Iron, Sheet Metal | ASME B18.6.3, SAE J933 | 100 | 000000000 | 00000 |
| 1/2" | 0.322" | 0.115" | No. 2 | No. 26 | F | Aluminum, Brass, Cast Iron, Sheet Metal | ASME B18.6.3, SAE J933 | 100 | 000000000 | 00000 |
| 5/8" | 0.322" | 0.115" | No. 2 | No. 26 | F | Aluminum, Brass, Cast Iron, Sheet Metal | ASME B18.6.3, SAE J933 | 100 | 000000000 | 00000 |
| 3/4" | 0.322" | 0.115" | No. 2 | No. 26 | F | Aluminum, Brass, Cast Iron, Sheet Metal | ASME B18.6.3, SAE J933 | 100 | 000000000 | 00000 |
| 1" | 0.322" | 0.115" | No. 2 | No. 26 | F | Aluminum, Brass, Cast Iron, Sheet Metal | ASME B18.6.3, SAE J933 | 100 | 000000000 | 00000 |
| 1 1/4" | 0.322" | 0.115" | No. 2 | No. 20 | F | Aluminum, Brass, Cast Iron, Sheet Metal | ASME B18.6.3, SAE J933 | 50 | 000000000 | 00000 |
| 1 1/2" | 0.322" | 0.115" | No. 2 | No. 20 | F | Aluminum, Brass, Cast Iron, Sheet Metal | ASME B18.6.3, SAE J933 | 25 | 000000000 | 0000 |
| 1 3/4" | 0.322" | 0.115" | No. 2 | No. 20 | F | Aluminum, Brass, Cast Iron, Sheet Metal | ASME B18.6.3, SAE J933 | 25 | 000000000 | 0000 |
| 2" | 0.322" | 0.115" | No. 2 | No. 20 | F | Aluminum, Brass, Cast Iron, Sheet Metal | ASME B18.6.3, SAE J933 | 25 | 000000000 | 00000 |
| 2 1/2" | 0.322" | 0.115" | No. 2 | No. 20 | F | Aluminum, Brass, Cast Iron, Sheet Metal | ASME B18.6.3, SAE J933 | 25 | 000000000 | 00000 |
| 3" | 0.322" | 0.115" | No. 2 | No. 20 | F | Aluminum, Brass, Cast Iron, Sheet Metal | ASME B18.6.3, SAE J933 | 25 | 000000000 | 00000 |
10-24 | ||||||||||
| 1/4" | 0.373" | 0.133" | No. 2 | No. 19 | F | Aluminum, Brass, Cast Iron, Sheet Metal | ASME B18.6.3, SAE J933 | 50 | 000000000 | 00000 |
| 5/16" | 0.373" | 0.133" | No. 2 | No. 19 | F | Aluminum, Brass, Cast Iron, Sheet Metal | ASME B18.6.3, SAE J933 | 100 | 000000000 | 00000 |
| 3/8" | 0.373" | 0.133" | No. 2 | No. 17 | F | Aluminum, Brass, Cast Iron, Sheet Metal | ASME B18.6.3, SAE J933 | 100 | 000000000 | 00000 |
| 1/2" | 0.373" | 0.133" | No. 2 | No. 17 | F | Aluminum, Brass, Cast Iron, Sheet Metal | ASME B18.6.3, SAE J933 | 100 | 000000000 | 00000 |
| 5/8" | 0.373" | 0.133" | No. 2 | No. 17 | F | Aluminum, Brass, Cast Iron, Sheet Metal | ASME B18.6.3, SAE J933 | 100 | 000000000 | 00000 |
| 3/4" | 0.373" | 0.133" | No. 2 | No. 17 | F | Aluminum, Brass, Cast Iron, Sheet Metal | ASME B18.6.3, SAE J933 | 100 | 000000000 | 00000 |
| 7/8" | 0.373" | 0.133" | No. 2 | No. 19 | F | Aluminum, Brass, Cast Iron, Sheet Metal | ASME B18.6.3, SAE J933 | 50 | 000000000 | 00000 |
| 1" | 0.373" | 0.133" | No. 2 | No. 17 | F | Aluminum, Brass, Cast Iron, Sheet Metal | ASME B18.6.3, SAE J933 | 50 | 000000000 | 00000 |
| 1 1/4" | 0.373" | 0.133" | No. 2 | No. 17 | F | Aluminum, Brass, Cast Iron, Sheet Metal | ASME B18.6.3, SAE J933 | 50 | 000000000 | 00000 |
| 1 1/2" | 0.373" | 0.133" | No. 2 | No. 17 | F | Aluminum, Brass, Cast Iron, Sheet Metal | ASME B18.6.3, SAE J933 | 50 | 000000000 | 00000 |
| 1 3/4" | 0.373" | 0.133" | No. 2 | No. 19 | F | Aluminum, Brass, Cast Iron, Sheet Metal | ASME B18.6.3, SAE J933 | 25 | 000000000 | 0000 |
| 2" | 0.373" | 0.133" | No. 2 | No. 19 | F | Aluminum, Brass, Cast Iron, Sheet Metal | ASME B18.6.3, SAE J933 | 25 | 000000000 | 00000 |
10-32 | ||||||||||
| 1/4" | 0.373" | 0.133" | No. 2 | 11/64" | F | Aluminum, Brass, Cast Iron, Sheet Metal | ASME B18.6.3, SAE J933 | 50 | 000000000 | 0000 |
| 5/16" | 0.373" | 0.133" | No. 2 | 11/64" | F | Aluminum, Brass, Cast Iron, Sheet Metal | ASME B18.6.3, SAE J933 | 100 | 000000000 | 00000 |
| 3/8" | 0.373" | 0.133" | No. 2 | No. 17 | F | Aluminum, Brass, Cast Iron, Sheet Metal | ASME B18.6.3, SAE J933 | 100 | 000000000 | 00000 |
| 1/2" | 0.373" | 0.133" | No. 2 | No. 17 | F | Aluminum, Brass, Cast Iron, Sheet Metal | ASME B18.6.3, SAE J933 | 100 | 000000000 | 00000 |
| 5/8" | 0.373" | 0.133" | No. 2 | No. 17 | F | Aluminum, Brass, Cast Iron, Sheet Metal | ASME B18.6.3, SAE J933 | 100 | 000000000 | 00000 |
| 3/4" | 0.373" | 0.133" | No. 2 | No. 17 | F | Aluminum, Brass, Cast Iron, Sheet Metal | ASME B18.6.3, SAE J933 | 100 | 000000000 | 00000 |
| 7/8" | 0.373" | 0.133" | No. 2 | 11/64" | F | Aluminum, Brass, Cast Iron, Sheet Metal | ASME B18.6.3, SAE J933 | 25 | 000000000 | 00000 |
| 1" | 0.373" | 0.133" | No. 2 | No. 17 | F | Aluminum, Brass, Cast Iron, Sheet Metal | ASME B18.6.3, SAE J933 | 50 | 000000000 | 00000 |
| 1 1/4" | 0.373" | 0.133" | No. 2 | No. 17 | F | Aluminum, Brass, Cast Iron, Sheet Metal | ASME B18.6.3, SAE J933 | 50 | 000000000 | 00000 |
| 1 1/2" | 0.373" | 0.133" | No. 2 | No. 17 | F | Aluminum, Brass, Cast Iron, Sheet Metal | ASME B18.6.3, SAE J933 | 50 | 000000000 | 00000 |
| 2" | 0.373" | 0.133" | No. 2 | 11/64" | F | Aluminum, Brass, Cast Iron, Sheet Metal | ASME B18.6.3, SAE J933 | 25 | 000000000 | 00000 |
| 3" | 0.373" | 0.133" | No. 2 | 11/64" | F | Aluminum, Brass, Cast Iron, Sheet Metal | ASME B18.6.3, SAE J933 | 10 | 000000000 | 00000 |
12-24 | ||||||||||
| 1/4" | 0.425" | 0.151" | No. 3 | No. 11 | F | Aluminum, Brass, Cast Iron, Sheet Metal | ASME B18.6.3, SAE J933 | 10 | 000000000 | 00000 |
| 3/8" | 0.425" | 0.151" | No. 3 | No. 11 | F | Aluminum, Brass, Cast Iron, Sheet Metal | ASME B18.6.3, SAE J933 | 50 | 000000000 | 00000 |
| 1/2" | 0.425" | 0.151" | No. 3 | No. 8 | F | Aluminum, Brass, Cast Iron, Sheet Metal | ASME B18.6.3, SAE J933 | 50 | 000000000 | 00000 |
| 5/8" | 0.425" | 0.151" | No. 3 | No. 11 | F | Aluminum, Brass, Cast Iron, Sheet Metal | ASME B18.6.3, SAE J933 | 50 | 000000000 | 00000 |
| 3/4" | 0.425" | 0.151" | No. 3 | No. 8 | F | Aluminum, Brass, Cast Iron, Sheet Metal | ASME B18.6.3, SAE J933 | 50 | 000000000 | 00000 |
| 1" | 0.425" | 0.151" | No. 3 | No. 11 | F | Aluminum, Brass, Cast Iron, Sheet Metal | ASME B18.6.3, SAE J933 | 25 | 000000000 | 0000 |
| 1 1/4" | 0.425" | 0.151" | No. 3 | No. 11 | F | Aluminum, Brass, Cast Iron, Sheet Metal | ASME B18.6.3, SAE J933 | 25 | 000000000 | 00000 |
| 2" | 0.425" | 0.151" | No. 3 | No. 11 | F | Aluminum, Brass, Cast Iron, Sheet Metal | ASME B18.6.3, SAE J933 | 10 | 000000000 | 00000 |
1/4"-20 | ||||||||||
| 3/8" | 0.492" | 0.175" | No. 3 | No. 2 | F | Aluminum, Brass, Cast Iron, Sheet Metal | ASME B18.6.3, SAE J933 | 25 | 000000000 | 0000 |
| 1/2" | 0.492" | 0.175" | No. 3 | No. 1 | F | Aluminum, Brass, Cast Iron, Sheet Metal | ASME B18.6.3, SAE J933 | 25 | 000000000 | 00000 |
| 5/8" | 0.492" | 0.175" | No. 3 | No. 1 | F | Aluminum, Brass, Cast Iron, Sheet Metal | ASME B18.6.3, SAE J933 | 25 | 000000000 | 00000 |
| 3/4" | 0.492" | 0.175" | No. 3 | No. 1 | F | Aluminum, Brass, Cast Iron, Sheet Metal | ASME B18.6.3, SAE J933 | 25 | 000000000 | 00000 |
| 1" | 0.492" | 0.175" | No. 3 | No. 1 | F | Aluminum, Brass, Cast Iron, Sheet Metal | ASME B18.6.3, SAE J933 | 25 | 000000000 | 00000 |
| 1 1/4" | 0.492" | 0.175" | No. 3 | No. 1 | F | Aluminum, Brass, Cast Iron, Sheet Metal | ASME B18.6.3, SAE J933 | 25 | 000000000 | 00000 |
| 1 1/2" | 0.492" | 0.175" | No. 3 | No. 1 | F | Aluminum, Brass, Cast Iron, Sheet Metal | ASME B18.6.3, SAE J933 | 25 | 000000000 | 00000 |
| 2" | 0.492" | 0.175" | No. 3 | No. 1 | F | Aluminum, Brass, Cast Iron, Sheet Metal | ASME B18.6.3, SAE J933 | 25 | 000000000 | 00000 |
| 2 1/2" | 0.492" | 0.175" | No. 3 | No. 2 | F | Aluminum, Brass, Cast Iron, Sheet Metal | ASME B18.6.3, SAE J933 | 10 | 000000000 | 00000 |
| 3" | 0.492" | 0.175" | No. 3 | No. 2 | F | Aluminum, Brass, Cast Iron, Sheet Metal | ASME B18.6.3, SAE J933 | 10 | 000000000 | 00000 |
| 3 1/2" | 0.492" | 0.175" | No. 3 | No. 2 | F | Aluminum, Brass, Cast Iron, Sheet Metal | ASME B18.6.3, SAE J933 | 5 | 000000000 | 00000 |
| 4" | 0.492" | 0.175" | No. 3 | No. 2 | F | Aluminum, Brass, Cast Iron, Sheet Metal | ASME B18.6.3, SAE J933 | 5 | 000000000 | 00000 |
5/16"-18 | ||||||||||
| 1/2" | 0.615" | 0.218" | No. 4 | K | F | Aluminum, Brass, Cast Iron, Sheet Metal | ASME B18.6.3, SAE J933 | 5 | 000000000 | 0000 |
| 3/4" | 0.615" | 0.218" | No. 4 | K | F | Aluminum, Brass, Cast Iron, Sheet Metal | ASME B18.6.3, SAE J933 | 10 | 000000000 | 00000 |
| 1" | 0.615" | 0.218" | No. 4 | K | F | Aluminum, Brass, Cast Iron, Sheet Metal | ASME B18.6.3, SAE J933 | 10 | 000000000 | 00000 |
| 1 1/4" | 0.615" | 0.218" | No. 4 | K | F | Aluminum, Brass, Cast Iron, Sheet Metal | ASME B18.6.3, SAE J933 | 10 | 000000000 | 00000 |
| 2" | 0.615" | 0.218" | No. 4 | K | F | Aluminum, Brass, Cast Iron, Sheet Metal | ASME B18.6.3, SAE J933 | 5 | 000000000 | 00000 |
3/8"-16 | ||||||||||
| 1/2" | 0.74" | 0.261" | No. 4 | R | F | Aluminum, Brass, Cast Iron, Sheet Metal | ASME B18.6.3, SAE J933 | 1 | 000000000 | 0000 |
| 3/4" | 0.74" | 0.261" | No. 4 | R | F | Aluminum, Brass, Cast Iron, Sheet Metal | ASME B18.6.3, SAE J933 | 1 | 000000000 | 0000 |
| 1" | 0.74" | 0.261" | No. 4 | R | F | Aluminum, Brass, Cast Iron, Sheet Metal | ASME B18.6.3, SAE J933 | 1 | 000000000 | 0000 |
Black Zinc-Plated Steel | ||||||||||
4-40 | ||||||||||
| 1/4" | 0.219" | 0.08" | No. 1 | No. 41 | F | Aluminum, Brass, Cast Iron, Sheet Metal | ASME B18.6.3, SAE J933 | 50 | 000000000 | 00000 |
| 3/8" | 0.219" | 0.08" | No. 1 | No. 41 | F | Aluminum, Brass, Cast Iron, Sheet Metal | ASME B18.6.3, SAE J933 | 50 | 000000000 | 0000 |
6-32 | ||||||||||
| 3/8" | 0.27" | 0.097" | No. 2 | No. 31 | F | Aluminum, Brass, Cast Iron, Sheet Metal | ASME B18.6.3, SAE J933 | 50 | 000000000 | 00000 |
| 1/2" | 0.27" | 0.097" | No. 2 | No. 31 | F | Aluminum, Brass, Cast Iron, Sheet Metal | ASME B18.6.3, SAE J933 | 50 | 000000000 | 00000 |
| 3/4" | 0.27" | 0.097" | No. 2 | No. 31 | F | Aluminum, Brass, Cast Iron, Sheet Metal | ASME B18.6.3, SAE J933 | 50 | 000000000 | 00000 |
8-32 | ||||||||||
| 3/8" | 0.322" | 0.115" | No. 2 | No. 26 | F | Aluminum, Brass, Cast Iron, Sheet Metal | ASME B18.6.3, SAE J933 | 50 | 000000000 | 00000 |
| 1/2" | 0.322" | 0.115" | No. 2 | No. 26 | F | Aluminum, Brass, Cast Iron, Sheet Metal | ASME B18.6.3, SAE J933 | 50 | 000000000 | 00000 |
| 3/4" | 0.322" | 0.115" | No. 2 | No. 26 | F | Aluminum, Brass, Cast Iron, Sheet Metal | ASME B18.6.3, SAE J933 | 50 | 000000000 | 00000 |
| 1" | 0.322" | 0.115" | No. 2 | No. 26 | F | Aluminum, Brass, Cast Iron, Sheet Metal | ASME B18.6.3, SAE J933 | 50 | 000000000 | 00000 |
10-24 | ||||||||||
| 3/8" | 0.373" | 0.133" | No. 2 | No. 17 | F | Aluminum, Brass, Cast Iron, Sheet Metal | ASME B18.6.3, SAE J933 | 50 | 000000000 | 00000 |
| 1/2" | 0.373" | 0.133" | No. 2 | No. 17 | F | Aluminum, Brass, Cast Iron, Sheet Metal | ASME B18.6.3, SAE J933 | 50 | 000000000 | 00000 |
| 3/4" | 0.373" | 0.133" | No. 2 | No. 17 | F | Aluminum, Brass, Cast Iron, Sheet Metal | ASME B18.6.3, SAE J933 | 50 | 000000000 | 00000 |
10-32 | ||||||||||
| 3/8" | 0.373" | 0.133" | No. 2 | No. 17 | F | Aluminum, Brass, Cast Iron, Sheet Metal | ASME B18.6.3, SAE J933 | 50 | 000000000 | 00000 |
| 1/2" | 0.373" | 0.133" | No. 2 | No. 17 | F | Aluminum, Brass, Cast Iron, Sheet Metal | ASME B18.6.3, SAE J933 | 50 | 000000000 | 00000 |
| 3/4" | 0.373" | 0.133" | No. 2 | No. 17 | F | Aluminum, Brass, Cast Iron, Sheet Metal | ASME B18.6.3, SAE J933 | 50 | 000000000 | 00000 |
| 1" | 0.373" | 0.133" | No. 2 | No. 17 | F | Aluminum, Brass, Cast Iron, Sheet Metal | ASME B18.6.3, SAE J933 | 25 | 000000000 | 00000 |
12-24 | ||||||||||
| 1/2" | 0.425" | 0.151" | No. 3 | No. 8 | F | Aluminum, Brass, Cast Iron, Sheet Metal | ASME B18.6.3, SAE J933 | 25 | 000000000 | 00000 |
| 3/4" | 0.425" | 0.151" | No. 3 | No. 8 | F | Aluminum, Brass, Cast Iron, Sheet Metal | ASME B18.6.3, SAE J933 | 25 | 000000000 | 00000 |
1/4"-20 | ||||||||||
| 1/2" | 0.492" | 0.175" | No. 3 | No. 1 | F | Aluminum, Brass, Cast Iron, Sheet Metal | ASME B18.6.3, SAE J933 | 25 | 000000000 | 00000 |
| 3/4" | 0.492" | 0.175" | No. 3 | No. 1 | F | Aluminum, Brass, Cast Iron, Sheet Metal | ASME B18.6.3, SAE J933 | 25 | 000000000 | 00000 |
| 1" | 0.492" | 0.175" | No. 3 | No. 1 | F | Aluminum, Brass, Cast Iron, Sheet Metal | ASME B18.6.3, SAE J933 | 25 | 000000000 | 00000 |
| 1 1/2" | 0.492" | 0.175" | No. 3 | No. 1 | F | Aluminum, Brass, Cast Iron, Sheet Metal | ASME B18.6.3, SAE J933 | 25 | 000000000 | 00000 |
| 2" | 0.492" | 0.175" | No. 3 | No. 1 | F | Aluminum, Brass, Cast Iron, Sheet Metal | ASME B18.6.3, SAE J933 | 10 | 000000000 | 0000 |
Stainless Steel Rounded Head Thread-Cutting Screws for Metal
Made from 410 stainless steel, these screws are strong, wear resistant, and mildly chemical resistant. They 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 head.
For technical drawings and 3-D models, click on a part number.
Head | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| Lg. | Dia. | Ht. | Drive Size | Drill Bit Size | Tapping Screw Type | For Use In | Pkg. Qty. | Pkg. | |
410 Stainless Steel | |||||||||
4-40 | |||||||||
| 1/4" | 0.219" | 0.08" | No. 1 | 2.2 mm | F | Brass, Cast Iron, Sheet Metal | 100 | 000000000 | 00000 |
| 3/8" | 0.219" | 0.08" | No. 1 | 2.2 mm | F | Brass, Cast Iron, Sheet Metal | 100 | 000000000 | 0000 |
| 1/2" | 0.219" | 0.08" | No. 1 | 2.2 mm | F | Brass, Cast Iron, Sheet Metal | 100 | 000000000 | 0000 |
6-32 | |||||||||
| 1/4" | 0.27" | 0.097" | No. 2 | No. 36 | F | Brass, Cast Iron, Sheet Metal | 100 | 000000000 | 0000 |
| 3/8" | 0.27" | 0.097" | No. 2 | No. 36 | F | Brass, Cast Iron, Sheet Metal | 100 | 000000000 | 0000 |
| 1/2" | 0.27" | 0.097" | No. 2 | No. 36 | F | Brass, Cast Iron, Sheet Metal | 100 | 000000000 | 0000 |
| 5/8" | 0.27" | 0.097" | No. 2 | No. 36 | F | Brass, Cast Iron, Sheet Metal | 100 | 000000000 | 0000 |
| 3/4" | 0.27" | 0.097" | No. 2 | No. 36 | F | Brass, Cast Iron, Sheet Metal | 100 | 000000000 | 0000 |
8-32 | |||||||||
| 1/4" | 0.322" | 0.115" | No. 2 | No. 29 | F | Brass, Cast Iron, Sheet Metal | 100 | 000000000 | 00000 |
| 3/8" | 0.322" | 0.115" | No. 2 | No. 29 | F | Brass, Cast Iron, Sheet Metal | 100 | 000000000 | 00000 |
| 1/2" | 0.322" | 0.115" | No. 2 | No. 29 | F | Brass, Cast Iron, Sheet Metal | 100 | 000000000 | 0000 |
| 5/8" | 0.322" | 0.115" | No. 2 | No. 29 | F | Brass, Cast Iron, Sheet Metal | 100 | 000000000 | 00000 |
| 3/4" | 0.322" | 0.115" | No. 2 | No. 29 | F | Brass, Cast Iron, Sheet Metal | 100 | 000000000 | 00000 |
| 1" | 0.322" | 0.115" | No. 2 | No. 29 | F | Brass, Cast Iron, Sheet Metal | 100 | 000000000 | 00000 |
10-24 | |||||||||
| 3/8" | 0.373" | 0.133" | No. 2 | No. 25 | F | Brass, Cast Iron, Sheet Metal | 100 | 000000000 | 00000 |
| 1/2" | 0.373" | 0.133" | No. 2 | No. 25 | F | Brass, Cast Iron, Sheet Metal | 100 | 000000000 | 00000 |
| 5/8" | 0.373" | 0.133" | No. 2 | No. 25 | F | Brass, Cast Iron, Sheet Metal | 100 | 000000000 | 00000 |
| 3/4" | 0.373" | 0.133" | No. 2 | No. 25 | F | Brass, Cast Iron, Sheet Metal | 100 | 000000000 | 00000 |
| 1" | 0.373" | 0.133" | No. 2 | No. 25 | F | Brass, Cast Iron, Sheet Metal | 100 | 000000000 | 00000 |
| 1 1/2" | 0.373" | 0.133" | No. 2 | No. 25 | F | Brass, Cast Iron, Sheet Metal | 25 | 000000000 | 0000 |
10-32 | |||||||||
| 3/8" | 0.373" | 0.133" | No. 2 | No. 21 | F | Brass, Cast Iron, Sheet Metal | 100 | 000000000 | 00000 |
| 1/2" | 0.373" | 0.133" | No. 2 | No. 21 | F | Brass, Cast Iron, Sheet Metal | 100 | 000000000 | 00000 |
| 5/8" | 0.373" | 0.133" | No. 2 | No. 21 | F | Brass, Cast Iron, Sheet Metal | 100 | 000000000 | 00000 |
| 3/4" | 0.373" | 0.133" | No. 2 | No. 21 | F | Brass, Cast Iron, Sheet Metal | 100 | 000000000 | 00000 |
| 1" | 0.373" | 0.133" | No. 2 | No. 21 | F | Brass, Cast Iron, Sheet Metal | 100 | 000000000 | 00000 |
12-24 | |||||||||
| 3/8" | 0.425" | 0.151" | No. 3 | No. 18 | F | Brass, Cast Iron, Sheet Metal | 50 | 000000000 | 0000 |
| 1/2" | 0.425" | 0.151" | No. 3 | No. 18 | F | Brass, Cast Iron, Sheet Metal | 50 | 000000000 | 00000 |
1/4"-20 | |||||||||
| 1/2" | 0.492" | 0.175" | No. 3 | No. 7 | F | Brass, Cast Iron, Sheet Metal | 50 | 000000000 | 00000 |
| 3/4" | 0.492" | 0.175" | No. 3 | No. 7 | F | Brass, Cast Iron, Sheet Metal | 50 | 000000000 | 00000 |
| 1" | 0.492" | 0.175" | No. 3 | No. 7 | F | Brass, Cast Iron, Sheet Metal | 50 | 000000000 | 00000 |
| 1 1/4" | 0.492" | 0.175" | No. 3 | No. 7 | F | Brass, Cast Iron, Sheet Metal | 25 | 000000000 | 0000 |
| 1 1/2" | 0.492" | 0.175" | No. 3 | No. 7 | F | Brass, Cast Iron, Sheet Metal | 10 | 000000000 | 0000 |
5/16"-18 | |||||||||
| 3/4" | 0.615" | 0.218" | No. 4 | F | F | Brass, Cast Iron, Sheet Metal | 10 | 000000000 | 0000 |
| 1" | 0.615" | 0.218" | No. 4 | F | F | Brass, Cast Iron, Sheet Metal | 10 | 000000000 | 0000 |
Quick-Install Thread-Cutting Screws for Soft Metal
A wide cutting slot provides excellent chip clearing and low driving torque in soft metal such as brass. Made from 410 stainless steel, these screws are strong, wear resistant, and mildly chemical resistant. Not for use with aluminum. Length is measured from under the head.
For technical drawings and 3-D models, click on a part number.
Head | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| Lg. | Dia. | Ht. | Drive Size | Drill Bit Size | Tapping Screw Type | For Use In | Pkg. Qty. | Pkg. | |
410 Stainless Steel | |||||||||
4-40 | |||||||||
| 1/4" | 0.219" | 0.08" | No. 1 | No. 41 | 23/T | Brass, Cast Iron, Sheet Metal | 100 | 000000000 | 00000 |
| 3/8" | 0.219" | 0.08" | No. 1 | No. 41 | 23/T | Brass, Cast Iron, Sheet Metal | 100 | 000000000 | 0000 |
| 1/2" | 0.219" | 0.08" | No. 1 | No. 41 | 23/T | Brass, Cast Iron, Sheet Metal | 100 | 000000000 | 0000 |
6-32 | |||||||||
| 1/4" | 0.27" | 0.097" | No. 2 | No. 31 | 23/T | Brass, Cast Iron, Sheet Metal | 100 | 000000000 | 0000 |
| 3/8" | 0.27" | 0.097" | No. 2 | No. 31 | 23/T | Brass, Cast Iron, Sheet Metal | 100 | 000000000 | 0000 |
| 1/2" | 0.27" | 0.097" | No. 2 | No. 31 | 23/T | Brass, Cast Iron, Sheet Metal | 100 | 000000000 | 0000 |
8-32 | |||||||||
| 1/4" | 0.322" | 0.115" | No. 2 | No. 26 | 23/T | Brass, Cast Iron, Sheet Metal | 100 | 000000000 | 0000 |
| 3/8" | 0.322" | 0.115" | No. 2 | No. 26 | 23/T | Brass, Cast Iron, Sheet Metal | 100 | 000000000 | 00000 |
| 1/2" | 0.322" | 0.115" | No. 2 | No. 26 | 23/T | Brass, Cast Iron, Sheet Metal | 100 | 000000000 | 0000 |
10-24 | |||||||||
| 3/8" | 0.373" | 0.133" | No. 2 | No. 17 | 23/T | Brass, Cast Iron, Sheet Metal | 100 | 000000000 | 00000 |
| 1/2" | 0.373" | 0.133" | No. 2 | No. 17 | 23/T | Brass, Cast Iron, Sheet Metal | 50 | 000000000 | 0000 |
| 3/4" | 0.373" | 0.133" | No. 2 | No. 17 | 23/T | Brass, Cast Iron, Sheet Metal | 50 | 000000000 | 00000 |
10-32 | |||||||||
| 3/8" | 0.373" | 0.133" | No. 2 | No. 17 | 23/T | Brass, Cast Iron, Sheet Metal | 100 | 000000000 | 00000 |
| 1/2" | 0.373" | 0.133" | No. 2 | No. 17 | 23/T | Brass, Cast Iron, Sheet Metal | 50 | 000000000 | 0000 |
| 3/4" | 0.373" | 0.133" | No. 2 | No. 17 | 23/T | Brass, Cast Iron, Sheet Metal | 50 | 000000000 | 00000 |
1/4"-20 | |||||||||
| 1/2" | 0.492" | 0.175" | No. 3 | No. 1 | 23/T | Brass, Cast Iron, Sheet Metal | 50 | 000000000 | 00000 |
| 3/4" | 0.492" | 0.175" | No. 3 | No. 1 | 23/T | Brass, Cast Iron, Sheet Metal | 25 | 000000000 | 00000 |
| 1" | 0.492" | 0.175" | No. 3 | No. 1 | 23/T | Brass, Cast Iron, Sheet Metal | 25 | 000000000 | 00000 |
Distortion-Free Screws for Plastic-Wood Composites
Threads change direction to cut into composites and push material back into the hole to prevent distorting the surface around the hole. Also known as trim-head deck screws, these have a small flat head and slender shank to reduce the risk of splitting. They have a Type 17 auger point to penetrate softwood and plastic-wood composite decking material. A Torx drive allows you to apply extra force with less slippage or damage to the recess. Made from 18-8 stainless steel, they have good chemical resistance and are a good choice for ACQ-treated (arsenic-free) lumber. They may be mildly magnetic. Length is measured from the top of the head.
For technical drawings and 3-D models, click on a part number.
Thread-Cutting Screws for Plastic
These screws cut threads into drilled holes as they’re turned, so they require less driving torque and cause less stress on material than thread-forming screws. Also known as Type BT and Type 25 screws, they have coarse threads that grip soft plastic. They're 410 stainless steel, which is strong, wear resistant, and mildly chemical resistant. Length is measured from under the head.
For technical drawings and 3-D models, click on a part number.
Head | ||||||||
|---|---|---|---|---|---|---|---|---|
| Lg. | Dia. | Ht. | Drive Size | Drill Bit Size | Approximate Threads per Inch | Pkg. Qty. | Pkg. | |
410 Stainless Steel | ||||||||
No. 2 | ||||||||
| 1/4" | 0.167" | 0.062" | No. 1 | No. 49 | 32 | 100 | 000000000 | 00000 |
| 5/16" | 0.167" | 0.062" | No. 1 | No. 49 | 32 | 100 | 000000000 | 00000 |
| 3/8" | 0.167" | 0.062" | No. 1 | No. 49 | 32 | 100 | 000000000 | 00000 |
| 1/2" | 0.167" | 0.062" | No. 1 | No. 49 | 32 | 100 | 000000000 | 00000 |
No. 4 | ||||||||
| 1/4" | 0.219" | 0.08" | No. 1 | No. 41 | 24 | 100 | 000000000 | 0000 |
| 5/16" | 0.219" | 0.08" | No. 1 | No. 41 | 24 | 100 | 000000000 | 0000 |
| 3/8" | 0.219" | 0.08" | No. 1 | No. 41 | 24 | 100 | 000000000 | 0000 |
| 1/2" | 0.219" | 0.08" | No. 1 | No. 41 | 24 | 100 | 000000000 | 0000 |
| 3/4" | 0.219" | 0.08" | No. 1 | No. 41 | 24 | 100 | 000000000 | 0000 |
No. 6 | ||||||||
| 1/4" | 0.27" | 0.097" | No. 2 | No. 31 | 20 | 100 | 000000000 | 0000 |
| 5/16" | 0.27" | 0.097" | No. 2 | No. 31 | 20 | 100 | 000000000 | 0000 |
| 3/8" | 0.27" | 0.097" | No. 2 | No. 31 | 20 | 100 | 000000000 | 0000 |
| 1/2" | 0.27" | 0.097" | No. 2 | No. 31 | 20 | 100 | 000000000 | 0000 |
| 5/8" | 0.27" | 0.097" | No. 2 | No. 31 | 20 | 100 | 000000000 | 00000 |
| 3/4" | 0.27" | 0.097" | No. 2 | No. 31 | 20 | 100 | 000000000 | 00000 |
| 1" | 0.27" | 0.097" | No. 2 | No. 31 | 20 | 100 | 000000000 | 00000 |
No. 8 | ||||||||
| 3/8" | 0.322" | 0.115" | No. 2 | No. 26 | 18 | 100 | 000000000 | 00000 |
| 1/2" | 0.322" | 0.115" | No. 2 | No. 26 | 18 | 100 | 000000000 | 00000 |
| 5/8" | 0.322" | 0.115" | No. 2 | No. 26 | 18 | 100 | 000000000 | 00000 |
| 3/4" | 0.322" | 0.115" | No. 2 | No. 26 | 18 | 100 | 000000000 | 00000 |
| 1" | 0.322" | 0.115" | No. 2 | No. 26 | 18 | 100 | 000000000 | 00000 |
| 1 1/4" | 0.322" | 0.115" | No. 2 | No. 26 | 18 | 100 | 000000000 | 00000 |
| 1 1/2" | 0.322" | 0.115" | No. 2 | No. 26 | 18 | 100 | 000000000 | 00000 |
No. 10 | ||||||||
| 3/8" | 0.373" | 0.133" | No. 2 | No. 17 | 16 | 100 | 000000000 | 00000 |
| 1/2" | 0.373" | 0.133" | No. 2 | No. 17 | 16 | 100 | 000000000 | 00000 |
| 5/8" | 0.373" | 0.133" | No. 2 | No. 17 | 16 | 100 | 000000000 | 00000 |
| 3/4" | 0.373" | 0.133" | No. 2 | No. 17 | 16 | 100 | 000000000 | 00000 |
| 1" | 0.373" | 0.133" | No. 2 | No. 17 | 16 | 100 | 000000000 | 00000 |
| 1 1/4" | 0.373" | 0.133" | No. 2 | No. 17 | 16 | 50 | 000000000 | 00000 |
| 1 1/2" | 0.373" | 0.133" | No. 2 | No. 17 | 16 | 50 | 000000000 | 00000 |