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Tapping Screw Type
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Rounded Head Style
Tapping Method
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Export Control Classification Number (ECCN)
DFARS Specialty Metals
About Tapping Screws
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Compare drilling, pointed, thread-forming, and thread-cutting tips to find the best choice for your material.
Strip-Resistant Steel Torx Rounded Head Screws for Sheet Metal
 |
Threads with double spirals grab thin-gauge sheet metal for a secure hold without damaging the material. As these screws tap, the threads engage along the whole length to prevent overtightening and ruining the threads. Also known as Fastite, they have a triangular shank and may have a slightly different diameter than standard screws. The deep six-lobe recess (also called a star drive) withstands more torque than slotted, Phillips, and hex drives.
Length is measured from under the head.
Zinc-Plated Steel—A common choice for areas with occasional exposure to moisture.
Head | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
Lg. | Dia. | Ht. | Tapping Screw Type | Drive Size | Approx. Threads per In. | Drill Bit Size | Shank Cross Section | Pkg. Qty. | Pkg. | |||
Zinc-Plated Steel | ||||||||||||
No. 2 Screw Size | ||||||||||||
| 1/4" | 0.167" | 0.062" | CA | T8 | 56 | 48 Ga. | Tri-Lobe | 25 | 92750A058 | 000000 | ||
| 3/8" | 0.167" | 0.062" | CA | T8 | 56 | 48 Ga. | Tri-Lobe | 25 | 92750A054 | 00000 | ||
No. 4 Screw Size | ||||||||||||
| 1/4" | 0.219" | 0.08" | CA | T10 | 40 | 44 Ga. | Tri-Lobe | 25 | 92750A104 | 00000 | ||
| 3/8" | 0.219" | 0.08" | CA | T10 | 40 | 44 Ga. | Tri-Lobe | 25 | 92750A107 | 00000 | ||
| 3/4" | 0.219" | 0.08" | CA | T10 | 40 | 44 Ga. | Tri-Lobe | 25 | 92750A119 | 00000 | ||
No. 6 Screw Size | ||||||||||||
| 1/4" | 0.27" | 0.097" | CA | T15 | 32 | 32 Ga. | Tri-Lobe | 25 | 92750A153 | 00000 | ||
| 3/8" | 0.27" | 0.097" | CA | T15 | 32 | 32 Ga. | Tri-Lobe | 25 | 92750A157 | 00000 | ||
No. 8 Screw Size | ||||||||||||
| 1/4" | 0.322" | 0.115" | CA | T20 | 32 | 29 Ga. | Tri-Lobe | 25 | 92750A205 | 00000 | ||
| 3/8" | 0.322" | 0.115" | CA | T20 | 32 | 29 Ga. | Tri-Lobe | 25 | 92750A209 | 00000 | ||
| 1/2" | 0.322" | 0.115" | CA | T20 | 32 | 29 Ga. | Tri-Lobe | 25 | 92750A213 | 00000 | ||
| 5/8" | 0.322" | 0.115" | CA | T20 | 32 | 29 Ga. | Tri-Lobe | 25 | 92750A217 | 00000 | ||
No. 10 Screw Size | ||||||||||||
| 3/8" | 0.373" | 0.133" | CA | T25 | 24 | 21 Ga. | Tri-Lobe | 25 | 92750A256 | 00000 | ||
| 3/8" | 0.373" | 0.133" | CA | T25 | 32 | 21 Ga. | Tri-Lobe | 25 | 92750A307 | 00000 | ||
| 1/2" | 0.373" | 0.133" | CA | T25 | 24 | 21 Ga. | Tri-Lobe | 25 | 92750A259 | 00000 | ||
| 1/2" | 0.373" | 0.133" | CA | T25 | 32 | 21 Ga. | Tri-Lobe | 25 | 92750A310 | 00000 | ||
| 3/4" | 0.373" | 0.133" | CA | T25 | 32 | 21 Ga. | Tri-Lobe | 25 | 92750A319 | 00000 | ||
M2 Screw Size | ||||||||||||
| 6 mm | 4.2 mm | 1.8 mm | CA | T6 | — | 1.5 mm | Tri-Lobe | 25 | 92750A556 | 00000 | ||
M2.5 Screw Size | ||||||||||||
| 6 mm | 4.9 mm | 2.3 mm | CA | T8 | — | 48 Ga. | Tri-Lobe | 25 | 92750A611 | 00000 | ||
| 8 mm | 4.9 mm | 2.3 mm | CA | T8 | — | 48 Ga. | Tri-Lobe | 25 | 92750A615 | 00000 | ||
M3 Screw Size | ||||||||||||
| 4 mm | 5.6 mm | 2.6 mm | CA | T10 | — | 42 Ga. | Tri-Lobe | 25 | 92750A652 | 00000 | ||
| 6 mm | 5.6 mm | 2.6 mm | CA | T10 | — | 42 Ga. | Tri-Lobe | 25 | 92750A656 | 00000 | ||
| 8 mm | 5.6 mm | 2.6 mm | CA | T10 | — | 42 Ga. | Tri-Lobe | 25 | 92750A661 | 00000 | ||
| 10 mm | 5.6 mm | 2.6 mm | CA | T10 | — | 42 Ga. | Tri-Lobe | 25 | 92750A665 | 00000 | ||
M4 Screw Size | ||||||||||||
| 6 mm | 8 mm | 3.3 mm | CA | T20 | — | 1/8" | Tri-Lobe | 25 | 92750A712 | 00000 | ||
| 8 mm | 8 mm | 3.3 mm | CA | T20 | — | 1/8" | Tri-Lobe | 25 | 92750A716 | 00000 | ||
| 10 mm | 8 mm | 3.3 mm | CA | T20 | — | 1/8" | Tri-Lobe | 25 | 92750A720 | 00000 | ||
Strip-Resistant Drywall Screws for Wood
 |
Ribs under the head act as a brake to prevent over-tightening and damaging threads. A sharp point penetrates wood and sheet metal, and alternating high and low threads minimize driving torque. These screws are made from steel and have a coating that resists up to 500 hours of salt spray.
Length—Length is measured from the top of the head.
Head | Drive | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Lg. | Dia. | Ht. | Size | Style | Max. Drilling Thk. | Approx. Threads per In. | Threading | Min. Thread Lg. | Pkg. Qty. | Pkg. | |||
Corrosion-Resistant-Coated Steel | |||||||||||||
No. 8 Screw Size | |||||||||||||
| 1 1/4" | 0.413" | 0.118" | No. 2 | Phillips | 0.036" | 15 | Fully Threaded | — | 100 | 92050A100 | 000000 | ||
Electrocoated Steel | |||||||||||||
No. 9 Screw Size | |||||||||||||
| 1 5/8" | 0.405" | 0.094" | No. 2 | Phillips | 0.036" | 15 | Fully Threaded | — | 100 | 92050A200 | 00000 | ||
| 2 1/4" | 0.405" | 0.094" | No. 2 | Phillips | 0.036" | 15 | Partially Threaded | 2" | 100 | 92050A300 | 00000 | ||
Strip-Resistant Drilling Drywall Screws for Metal Framing
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Ribs under the head act as a brake to prevent over-tightening and damaging threads. A drill point powers through drywall and into metal studs up to 0.105" thick. These screws are made from steel and have a coating that resists up to 500 hours of salt spray.
Length—Length is measured from the top of the head.
Head | Drive | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Lg. | Drill Point Size | Dia. | Ht. | Size | Style | Max. Drilling Thk. | Approx. Threads per In. | Threading | Pkg. Qty. | Pkg. | |||
Corrosion-Resistant-Coated Steel | |||||||||||||
No. 8 Screw Size | |||||||||||||
| 1 1/4" | No. 2 | 0.413" | 0.118" | No. 2 | Phillips | 0.105" | 18 | Fully Threaded | 100 | 92050A400 | 000000 | ||
| 2 1/4" | No. 2 | 0.413" | 0.118" | No. 2 | Phillips | 0.105" | 18 | Fully Threaded | 100 | 92050A600 | 00000 | ||
Electrocoated Steel | |||||||||||||
No. 8 Screw Size | |||||||||||||
| 1 5/8" | No. 2 | 0.395" | 0.094" | No. 2 | Phillips | 0.105" | 18 | Fully Threaded | 100 | 92050A500 | 00000 | ||
