About Tapping Screws
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Strip-Resistant Screws for Sheet Metal
Also known as Fastite screws, these offer more thread engagement in 0.028" to 0.063" thick sheets to prevent overtightening and damaging threads. They're made from steel and have a zinc plating to resist corrosion in wet environments. Length is measured from under the head.
For technical drawings and 3-D models, click on a part number.
Zinc-Plated Steel—Inch
Head | |||||||
|---|---|---|---|---|---|---|---|
| Lg. | Dia. | Ht. | Drive Size | Drill Bit Size | Pkg. Qty. | Pkg. | |
2-56  | |||||||
| 1/4" | 0.167" | 0.062" | T8 | No. 48 | 25 | 000000000 | 000000 |
| 3/8" | 0.167" | 0.062" | T8 | No. 48 | 25 | 000000000 | 00000 |
4-40 | |||||||
| 1/4" | 0.219" | 0.08" | T10 | No. 44 | 25 | 000000000 | 00000 |
| 3/8" | 0.219" | 0.08" | T10 | No. 44 | 25 | 000000000 | 00000 |
| 3/4" | 0.219" | 0.08" | T10 | No. 44 | 25 | 000000000 | 00000 |
6-32 | |||||||
| 1/4" | 0.27" | 0.097" | T15 | No. 32 | 25 | 000000000 | 00000 |
| 3/8" | 0.27" | 0.097" | T15 | No. 32 | 25 | 000000000 | 00000 |
8-32 | |||||||
| 1/4" | 0.322" | 0.115" | T20 | No. 29 | 25 | 000000000 | 00000 |
| 3/8" | 0.322" | 0.115" | T20 | No. 29 | 25 | 000000000 | 00000 |
| 1/2" | 0.322" | 0.115" | T20 | No. 29 | 25 | 000000000 | 00000 |
| 5/8" | 0.322" | 0.115" | T20 | No. 29 | 25 | 000000000 | 00000 |
10-24 | |||||||
| 3/8" | 0.373" | 0.133" | T25 | No. 21 | 25 | 000000000 | 00000 |
| 1/2" | 0.373" | 0.133" | T25 | No. 21 | 25 | 000000000 | 00000 |
10-32 | |||||||
| 3/8" | 0.373" | 0.133" | T25 | No. 21 | 25 | 000000000 | 00000 |
| 1/2" | 0.373" | 0.133" | T25 | No. 21 | 25 | 000000000 | 00000 |
| 3/4" | 0.373" | 0.133" | T25 | No. 21 | 25 | 000000000 | 00000 |
Zinc-Plated Steel—Metric
Head, mm | ||||||||
|---|---|---|---|---|---|---|---|---|
| Lg., mm | Dia. | Ht. | Drive Size | Drill Bit Size | Thread Pitch | Pkg. Qty. | Pkg. | |
M2 | ||||||||
| 6 | 4.2 | 1.8 | T6 | 1.5 mm | 0.4 | 25 | 000000000 | 000000 |
M2.5 | ||||||||
| 6 | 4.9 | 2.3 | T8 | No. 48 | 0.45 | 25 | 000000000 | 00000 |
| 8 | 4.9 | 2.3 | T8 | No. 48 | 0.45 | 25 | 000000000 | 00000 |
M3 | ||||||||
| 4 | 5.6 | 2.6 | T10 | No. 42 | 0.5 | 25 | 000000000 | 00000 |
| 6 | 5.6 | 2.6 | T10 | No. 42 | 0.5 | 25 | 000000000 | 00000 |
| 8 | 5.6 | 2.6 | T10 | No. 42 | 0.5 | 25 | 000000000 | 00000 |
| 10 | 5.6 | 2.6 | T10 | No. 42 | 0.5 | 25 | 000000000 | 00000 |
M4 | ||||||||
| 6 | 8 | 3.3 | T20 | 1/8" | 0.7 | 25 | 000000000 | 00000 |
| 8 | 8 | 3.3 | T20 | 1/8" | 0.7 | 25 | 000000000 | 00000 |
| 10 | 8 | 3.3 | T20 | 1/8" | 0.7 | 25 | 000000000 | 00000 |