Drive Style Drive Style | Show |
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Drive Style Drive Style | Hide |
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| Phillips | External Hex | Slotted |
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| Square | Torx | Tamper- Resistant Torx |
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| Tamper- Resistant Hex | Drilled Spanner | One Way |
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| Tri-Wing® |
System of Measurement System of Measurement |
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Material Material |
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For Use In For Use In |
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Head Diameter Head Diameter |
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Tapping Method Tapping Method |
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 | Thread Forming |
Head Height Head Height |
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Threading Threading |
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Shank Cross Section Shank Cross Section |
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Drill Bit Decimal Size Equivalent Drill Bit DecimalSize Equivalent |
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Flat Head Profile Flat Head Profile |
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RoHS (Restriction of Hazardous Substances) RoHS (Restriction ofHazardous Substances) |
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REACH (Registration, Evaluation, Authorization and Restriction of Chemicals) REACH (Registration,Evaluation, Authorization and Restriction of Chemicals) |
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About Tapping Screws
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Tamper-Resistant Torx Rounded Head Screws for Sheet Metal
A tamper-resistant Torx driver is required for installation and removal. Also known as pin-in-Torx, these screws allow you to apply extra force with less slippage or damage to the recess. Made from 18-8 stainless steel, they are chemical resistant and may be mildly magnetic. They penetrate 0.025" and thinner sheet metal. 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. | |
18-8 Stainless Steel | ||||||||
No. 4 | ||||||||
| 3/8" | 0.206" | 0.055" | T8 | 3/32" | 24 | 25 | 000000000 | 000000 |
| 1/2" | 0.206" | 0.055" | T8 | 3/32" | 24 | 25 | 000000000 | 00000 |
| 5/8" | 0.206" | 0.055" | T8 | 3/32" | 24 | 25 | 000000000 | 00000 |
| 3/4" | 0.206" | 0.055" | T8 | 3/32" | 24 | 25 | 000000000 | 00000 |
No. 6 | ||||||||
| 3/8" | 0.255" | 0.07" | T10 | 7/64" | 20 | 25 | 000000000 | 00000 |
| 1/2" | 0.262" | 0.073" | T10 | No. 32 | 18 | 25 | 000000000 | 00000 |
| 5/8" | 0.255" | 0.07" | T10 | 7/64" | 20 | 25 | 000000000 | 00000 |
| 3/4" | 0.262" | 0.073" | T10 | No. 32 | 18 | 25 | 000000000 | 00000 |
| 1" | 0.262" | 0.073" | T10 | No. 32 | 18 | 25 | 000000000 | 00000 |
| 1 1/4" | 0.255" | 0.07" | T10 | 7/64" | 20 | 25 | 000000000 | 00000 |
| 1 1/2" | 0.262" | 0.073" | T10 | No. 32 | 18 | 25 | 000000000 | 00000 |
No. 8 | ||||||||
| 3/8" | 0.307" | 0.085" | T15 | 1/8" | 18 | 25 | 000000000 | 00000 |
| 1/2" | 0.312" | 0.087" | T15 | No. 29 | 15 | 25 | 000000000 | 00000 |
| 5/8" | 0.307" | 0.085" | T15 | 1/8" | 18 | 25 | 000000000 | 00000 |
| 3/4" | 0.312" | 0.087" | T15 | No. 29 | 15 | 25 | 000000000 | 00000 |
| 1" | 0.312" | 0.087" | T15 | No. 29 | 15 | 25 | 000000000 | 00000 |
| 1 1/4" | 0.312" | 0.087" | T15 | No. 29 | 15 | 25 | 000000000 | 00000 |
| 1 1/2" | 0.312" | 0.087" | T15 | No. 29 | 15 | 25 | 000000000 | 00000 |
| 2" | 0.307" | 0.085" | T15 | 1/8" | 18 | 25 | 000000000 | 00000 |
No. 10 | ||||||||
| 1/2" | 0.361" | 0.101" | T25 | No. 21 | 12 | 25 | 000000000 | 00000 |
| 5/8" | 0.355" | 0.1" | T25 | 9/64" | 16 | 25 | 000000000 | 00000 |
| 3/4" | 0.361" | 0.101" | T25 | No. 21 | 12 | 25 | 000000000 | 00000 |
| 1" | 0.361" | 0.101" | T25 | No. 21 | 12 | 25 | 000000000 | 00000 |
| 1 1/4" | 0.361" | 0.101" | T25 | No. 21 | 12 | 25 | 000000000 | 00000 |
| 1 1/2" | 0.361" | 0.101" | T25 | No. 21 | 12 | 10 | 000000000 | 00000 |
| 2" | 0.355" | 0.1" | T25 | 9/64" | 16 | 10 | 000000000 | 00000 |
No. 12 | ||||||||
| 3/4" | 0.41" | 0.11" | T25 | 5/32" | 14 | 10 | 000000000 | 0000 |
| 1" | 0.41" | 0.11" | T25 | 5/32" | 14 | 10 | 000000000 | 0000 |
| 1 1/4" | 0.41" | 0.11" | T25 | 5/32" | 14 | 10 | 000000000 | 00000 |
| 1 1/2" | 0.41" | 0.11" | T25 | 5/32" | 14 | 10 | 000000000 | 00000 |
No. 14 | ||||||||
| 1/2" | 0.437" | 0.132" | T27 | 5.5 mm | 10 | 10 | 000000000 | 00000 |
| 3/4" | 0.437" | 0.132" | T27 | 5.5 mm | 10 | 10 | 000000000 | 00000 |
| 1" | 0.437" | 0.132" | T27 | 5.5 mm | 10 | 10 | 000000000 | 00000 |
| 1 1/2" | 0.437" | 0.132" | T27 | 5.5 mm | 10 | 10 | 000000000 | 00000 |
| 2" | 0.43" | 0.13" | T27 | 3/16" | 14 | 10 | 000000000 | 00000 |
Tamper-Resistant Torx Flat Head Screws for Sheet Metal
A tamper-resistant Torx driver is required for installation and removal. Also known as pin-in-Torx, these screws allow you to apply extra force with less slippage or damage to the recess. They're beveled under the head for a flush finish in countersunk holes. Made from 18-8 stainless steel, these screws are chemical resistant and may be mildly magnetic. They penetrate 0.025" and thinner sheet metal. Length is measured from the top of 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. | |
18-8 Stainless Steel | ||||||||
No. 6 | ||||||||
| 1/2" | 0.257" | 0.097" | T15 | No. 32 | 18 | 25 | 000000000 | 000000 |
| 5/8" | 0.277" | 0.097" | T15 | No. 32 | 18 | 25 | 000000000 | 00000 |
| 3/4" | 0.257" | 0.097" | T15 | No. 32 | 18 | 25 | 000000000 | 00000 |
| 1" | 0.257" | 0.097" | T15 | No. 32 | 18 | 25 | 000000000 | 00000 |
| 1 1/2" | 0.277" | 0.097" | T15 | No. 32 | 18 | 25 | 000000000 | 00000 |
No. 8 | ||||||||
| 1/2" | 0.307" | 0.112" | T20 | No. 29 | 15 | 25 | 000000000 | 00000 |
| 5/8" | 0.327" | 0.112" | T20 | No. 29 | 15 | 25 | 000000000 | 00000 |
| 3/4" | 0.307" | 0.112" | T20 | No. 29 | 15 | 25 | 000000000 | 00000 |
| 1" | 0.307" | 0.112" | T20 | No. 29 | 15 | 25 | 000000000 | 00000 |
| 1 1/4" | 0.307" | 0.112" | T20 | No. 29 | 15 | 25 | 000000000 | 00000 |
| 1 1/2" | 0.327" | 0.112" | T20 | No. 29 | 15 | 10 | 000000000 | 0000 |
| 1 3/4" | 0.327" | 0.112" | T20 | No. 29 | 15 | 10 | 000000000 | 0000 |
| 2" | 0.327" | 0.112" | T20 | No. 29 | 15 | 10 | 000000000 | 0000 |
No. 10 | ||||||||
| 1/2" | 0.357" | 0.127" | T25 | No. 21 | 12 | 25 | 000000000 | 00000 |
| 3/4" | 0.357" | 0.127" | T25 | No. 21 | 12 | 25 | 000000000 | 00000 |
| 1" | 0.357" | 0.127" | T25 | No. 21 | 12 | 25 | 000000000 | 00000 |
| 1 1/4" | 0.378" | 0.127" | T25 | No. 21 | 12 | 10 | 000000000 | 0000 |
| 1 1/2" | 0.357" | 0.127" | T25 | No. 21 | 12 | 10 | 000000000 | 0000 |
No. 14 | ||||||||
| 5/8" | 0.531" | 0.161" | T30 | No. 4 | 14 | 10 | 000000000 | 0000 |
| 3/4" | 0.531" | 0.161" | T30 | No. 4 | 14 | 10 | 000000000 | 00000 |
| 1" | 0.531" | 0.161" | T30 | No. 4 | 14 | 10 | 000000000 | 00000 |
| 1 1/4" | 0.531" | 0.161" | T30 | No. 4 | 14 | 10 | 000000000 | 00000 |
| 1 1/2" | 0.531" | 0.161" | T30 | No. 4 | 14 | 10 | 000000000 | 00000 |
1/4" | ||||||||
| 3/4" | 0.472" | 0.161" | T30 | 5.5 mm | 10 | 10 | 000000000 | 0000 |
| 1" | 0.472" | 0.161" | T30 | 5.5 mm | 10 | 10 | 000000000 | 00000 |
| 1 1/4" | 0.472" | 0.161" | T30 | 5.5 mm | 10 | 10 | 000000000 | 00000 |
Tamper-Resistant Rounded Head Drilling Screws for Metal
A tamper-resistant Torx driver is required for installation and removal. Also known as pin-in-Torx, these screws allow you to apply extra force with less slippage or damage to the recess. They save you time and effort by drilling their own holes and fastening in a single operation. Made from 410 stainless steel, they're 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.
Drill Tip | Head | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Lg. | Type | Lg. | Max. Drilling Thick. | Dia. | Ht. | Drive Size | Approximate Threads per Inch | For Use In | Pkg. Qty. | Pkg. | |
410 Stainless Steel | |||||||||||
No. 8 | |||||||||||
| 1/2" | No. 2 | 3/16" | 0.098" | 0.322" | 0.115" | T20 | 18 | Steel, Stainless Steel, Sheet Metal | 25 | 000000000 | 000000 |
| 3/4" | No. 2 | 3/16" | 0.098" | 0.322" | 0.115" | T20 | 18 | Steel, Stainless Steel, Sheet Metal | 25 | 000000000 | 00000 |
| 1" | No. 2 | 3/16" | 0.098" | 0.322" | 0.115" | T20 | 18 | Steel, Stainless Steel, Sheet Metal | 10 | 000000000 | 0000 |
| 1 1/4" | No. 2 | 3/16" | 0.098" | 0.322" | 0.115" | T20 | 18 | Steel, Stainless Steel, Sheet Metal | 10 | 000000000 | 0000 |
| 1 1/2" | No. 2 | 3/16" | 0.098" | 0.322" | 0.115" | T20 | 18 | Steel, Stainless Steel, Sheet Metal | 10 | 000000000 | 00000 |
No. 10 | |||||||||||
| 1/2" | No. 2 | 13/64" | 0.106" | 0.373" | 0.133" | T25 | 16 | Steel, Stainless Steel, Sheet Metal | 10 | 000000000 | 0000 |
| 3/4" | No. 2 | 13/64" | 0.106" | 0.373" | 0.133" | T25 | 16 | Steel, Stainless Steel, Sheet Metal | 10 | 000000000 | 0000 |
| 1" | No. 2 | 13/64" | 0.106" | 0.373" | 0.133" | T25 | 16 | Steel, Stainless Steel, Sheet Metal | 10 | 000000000 | 0000 |
| 1 1/4" | No. 2 | 13/64" | 0.106" | 0.373" | 0.133" | T25 | 16 | Steel, Stainless Steel, Sheet Metal | 10 | 000000000 | 0000 |
| 1 1/2" | No. 2 | 13/64" | 0.106" | 0.373" | 0.133" | T25 | 16 | Steel, Stainless Steel, Sheet Metal | 10 | 000000000 | 00000 |
No. 12 | |||||||||||
| 1" | No. 3 | 9/32" | 0.187" | 0.425" | 0.156" | T27 | 14 | Steel, Stainless Steel, Sheet Metal | 10 | 000000000 | 00000 |
| 1 1/2" | No. 3 | 9/32" | 0.187" | 0.425" | 0.156" | T27 | 14 | Steel, Stainless Steel, Sheet Metal | 10 | 000000000 | 00000 |
| 2" | No. 3 | 9/32" | 0.187" | 0.425" | 0.156" | T27 | 14 | Steel, Stainless Steel, Sheet Metal | 10 | 000000000 | 00000 |
No. 14 | |||||||||||
| 1" | No. 3 | 11/32" | 0.21" | 0.492" | 0.175" | T30 | 14 | Steel, Stainless Steel, Sheet Metal | 10 | 000000000 | 00000 |
| 1 1/2" | No. 3 | 11/32" | 0.21" | 0.492" | 0.175" | T30 | 14 | Steel, Stainless Steel, Sheet Metal | 10 | 000000000 | 00000 |
| 2" | No. 3 | 11/32" | 0.21" | 0.492" | 0.175" | T30 | 14 | Steel, Stainless Steel, Sheet Metal | 10 | 000000000 | 00000 |
Tamper-Resistant Flat Head Drilling Screws for Metal
A tamper-resistant Torx driver is required for installation and removal. Also known as pin-in-Torx, these screws allow you to apply extra force with less slippage or damage to the recess. All are beveled under the head for use in countersunk holes. They save you time and effort by drilling their own holes and fastening in a single operation. Made from steel, they have a zinc plating to resist corrosion in wet environments. Length is measured from the top of the head.
For technical drawings and 3-D models, click on a part number.
Drill Tip | Head | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Lg. | Type | Lg. | Max. Drilling Thick. | Dia. | Ht. | Drive Size | Approximate Threads per Inch | For Use In | Pkg. Qty. | Pkg. | |
Zinc-Plated Steel | |||||||||||
No. 8 | |||||||||||
| 1/2" | No. 2 | 3/16" | 0.098" | 0.312" | 0.1" | T15 | 18 | Steel, Sheet Metal | 50 | 000000000 | 000000 |
| 3/4" | No. 2 | 3/16" | 0.098" | 0.312" | 0.1" | T15 | 18 | Steel, Sheet Metal | 50 | 000000000 | 00000 |
| 1" | No. 2 | 3/16" | 0.098" | 0.312" | 0.1" | T15 | 18 | Steel, Sheet Metal | 50 | 000000000 | 00000 |
| 1 1/4" | No. 2 | 3/16" | 0.098" | 0.312" | 0.1" | T15 | 18 | Steel, Sheet Metal | 50 | 000000000 | 00000 |
| 1 1/2" | No. 2 | 3/16" | 0.098" | 0.312" | 0.1" | T15 | 18 | Steel, Sheet Metal | 50 | 000000000 | 00000 |
No. 10 | |||||||||||
| 1/2" | No. 2 | 3/16" | 0.098" | 0.362" | 0.081" | T20 | 16 | Steel, Sheet Metal | 50 | 000000000 | 00000 |
| 3/4" | No. 3 | 1/4" | 0.15" | 0.362" | 0.116" | T20 | 16 | Steel, Sheet Metal | 50 | 000000000 | 00000 |
| 1" | No. 3 | 1/4" | 0.15" | 0.362" | 0.116" | T20 | 16 | Steel, Sheet Metal | 50 | 000000000 | 00000 |
| 1 1/2" | No. 3 | 1/4" | 0.15" | 0.362" | 0.116" | T20 | 16 | Steel, Sheet Metal | 50 | 000000000 | 00000 |
| 2" | No. 3 | 1/4" | 0.15" | 0.362" | 0.116" | T20 | 16 | Steel, Sheet Metal | 25 | 000000000 | 00000 |
No. 14 | |||||||||||
| 1" | No. 3 | 11/32" | 0.21" | 0.531" | 0.161" | T27 | 14 | Steel, Sheet Metal | 25 | 000000000 | 00000 |
| 1 1/2" | No. 3 | 11/32" | 0.21" | 0.531" | 0.161" | T27 | 14 | Steel, Sheet Metal | 25 | 000000000 | 00000 |
| 2" | No. 3 | 11/32" | 0.21" | 0.531" | 0.161" | T27 | 14 | Steel, Sheet Metal | 25 | 000000000 | 00000 |