About Tapping Screws
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Strip-Resistant Screws for Sheet Metal
![](/prerenderstable/mvPRE/contents/gfx/imagecache/927/92750a720p1-b01-digitall@halfx_636971475608126164.png?ver=imagenotfound)
![](/prerenderstable/mvPRE/contents/gfx/imagecache/i20/i200-drivestyletorx--3fd8ef1ff911611090945-p9@halfx_637466661486235050.png?ver=imagenotfound)
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 |