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About Tapping Screws
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Compare drilling, pointed, thread-forming, and thread-cutting tips to find the best choice for your material.
Tamper-Resistant Torx Stainless Steel Rounded Head Drilling Screws
 |
Removable only with a tamper-resistant Torx driver, these screws drill and fasten in one step. The deep, six-lobe recess (also known as pin-in-Torx) prevents drivers from slipping and deters unauthorized access. These screws resist corrosion and have a rounded head to create a finished look.
Length is measured from under the head.
410 Stainless Steel—Tougher and more wear resistant than other stainless steel screws but less corrosion resistant.
Power Tools Bits—Pair with your power tools to turn screws more quickly than manual tools.
Tapping Screws | Power Tools Bits | ||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Drill Tip | Head | ||||||||||||||
Lg. | Point Size | Lg. | Dia. | Ht. | Max. Drilling Thk. | Tapping Screw Type | Drive Size | Approx. Threads per In. | Pkg. Qty. | Pkg. | Each | ||||
410 Stainless Steel | |||||||||||||||
No. 8 Screw Size | |||||||||||||||
| 1/2" | No. 2 | 3/16" | 0.322" | 0.115" | 0.098" | AB | T20 | 18 | 25 | 92970A201 | 00000 | 7233A65 | 00000 | ||
| 3/4" | No. 2 | 3/16" | 0.322" | 0.115" | 0.098" | AB | T20 | 18 | 25 | 92970A203 | 0000 | 7233A65 | 0000 | ||
| 1" | No. 2 | 3/16" | 0.322" | 0.115" | 0.098" | AB | T20 | 18 | 10 | 92970A205 | 0000 | 7233A65 | 0000 | ||
| 1 1/4" | No. 2 | 3/16" | 0.322" | 0.115" | 0.098" | AB | T20 | 18 | 10 | 92970A208 | 0000 | 7233A65 | 0000 | ||
| 1 1/2" | No. 2 | 3/16" | 0.322" | 0.115" | 0.098" | AB | T20 | 18 | 10 | 92970A227 | 0000 | 7233A65 | 0000 | ||
No. 10 Screw Size | |||||||||||||||
| 1/2" | No. 2 | 13/64" | 0.373" | 0.133" | 0.106" | AB | T25 | 16 | 10 | 92970A209 | 0000 | 7233A66 | 0000 | ||
| 3/4" | No. 2 | 13/64" | 0.373" | 0.133" | 0.106" | AB | T25 | 16 | 10 | 92970A211 | 0000 | 7233A66 | 0000 | ||
| 1" | No. 2 | 13/64" | 0.373" | 0.133" | 0.106" | AB | T25 | 16 | 10 | 92970A213 | 0000 | 7233A66 | 0000 | ||
| 1 1/4" | No. 2 | 13/64" | 0.373" | 0.133" | 0.106" | AB | T25 | 16 | 10 | 92970A216 | 0000 | 7233A66 | 0000 | ||
| 1 1/2" | No. 2 | 13/64" | 0.373" | 0.133" | 0.106" | AB | T25 | 16 | 10 | 92970A218 | 0000 | 7233A66 | 0000 | ||
No. 12 Screw Size | |||||||||||||||
| 1" | No. 3 | 9/32" | 0.425" | 0.156" | 0.187" | AB | T27 | 14 | 10 | 92970A221 | 0000 | 7233A67 | 0000 | ||
| 1 1/2" | No. 3 | 9/32" | 0.425" | 0.156" | 0.187" | AB | T27 | 14 | 10 | 92970A222 | 0000 | 7233A67 | 0000 | ||
| 2" | No. 3 | 9/32" | 0.425" | 0.156" | 0.187" | AB | T27 | 14 | 10 | 92970A223 | 0000 | 7233A67 | 0000 | ||
No. 14 Screw Size | |||||||||||||||
| 1" | No. 3 | 11/32" | 0.492" | 0.175" | 0.21" | AB | T30 | 14 | 10 | 92970A224 | 0000 | 7233A68 | 0000 | ||
| 1 1/2" | No. 3 | 11/32" | 0.492" | 0.175" | 0.21" | AB | T30 | 14 | 10 | 92970A225 | 0000 | 7233A68 | 0000 | ||
| 2" | No. 3 | 11/32" | 0.492" | 0.175" | 0.21" | AB | T30 | 14 | 10 | 92970A226 | 0000 | 7233A68 | 0000 | ||
Tamper-Resistant Torx Steel Flat Head Drilling Screws
 |
Drill and fasten components with countersunk holes and deter tampering. These screws have a deep, six-lobe recess (also known as pin-in-Torx) that turns only with a tamper-resistant Torx driver. Their flat, beveled head sits flush with surfaces.
Length is measured from the top of the head.
Zinc-Plated Steel—A common choice for areas with occasional exposure to moisture.
Power Tools Bits—Pair with your power tools to turn screws more quickly than manual tools.
Tapping Screws | Power Tools Bits | ||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Drill Tip | Head | ||||||||||||||||
Lg. | Point Size | Lg. | Dia. | Ht. | Max. Drilling Thk. | Tapping Screw Type | Drive Size | Approx. Threads per In. | Countersink Angle | Flat Head Profile | Pkg. Qty. | Pkg. | Each | ||||
Zinc-Plated Steel | |||||||||||||||||
No. 8 Screw Size | |||||||||||||||||
| 1/2" | No. 2 | 3/16" | 0.312" | 0.1" | 0.098" | B | T15 | 18 | 82° | Standard | 50 | 94625A111 | 000000 | 7233A64 | 00000 | ||
| 3/4" | No. 2 | 3/16" | 0.312" | 0.1" | 0.098" | B | T15 | 18 | 82° | Standard | 50 | 94625A112 | 00000 | 7233A64 | 0000 | ||
| 1" | No. 2 | 3/16" | 0.312" | 0.1" | 0.098" | B | T15 | 18 | 82° | Standard | 50 | 94625A113 | 00000 | 7233A64 | 0000 | ||
| 1 1/4" | No. 2 | 3/16" | 0.312" | 0.1" | 0.098" | B | T15 | 18 | 82° | Standard | 50 | 94625A315 | 00000 | 7233A64 | 0000 | ||
| 1 1/2" | No. 2 | 3/16" | 0.312" | 0.1" | 0.098" | B | T15 | 18 | 82° | Standard | 50 | 94625A114 | 00000 | 7233A64 | 0000 | ||
No. 10 Screw Size | |||||||||||||||||
| 1/2" | No. 2 | 3/16" | 0.362" | 0.081" | 0.098" | B | T20 | 16 | 82° | Standard | 50 | 94625A121 | 00000 | 7233A65 | 0000 | ||
| 3/4" | No. 3 | 1/4" | 0.362" | 0.116" | 0.15" | B | T20 | 16 | 82° | Standard | 50 | 94625A423 | 00000 | 7233A65 | 0000 | ||
| 1" | No. 3 | 1/4" | 0.362" | 0.116" | 0.15" | B | T20 | 16 | 82° | Standard | 50 | 94625A122 | 00000 | 7233A65 | 0000 | ||
| 1 1/2" | No. 3 | 1/4" | 0.362" | 0.116" | 0.15" | B | T20 | 16 | 82° | Standard | 50 | 94625A425 | 00000 | 7233A65 | 0000 | ||
| 2" | No. 3 | 1/4" | 0.362" | 0.116" | 0.15" | B | T20 | 16 | 82° | Standard | 25 | 94625A427 | 00000 | 7233A65 | 0000 | ||
No. 14 Screw Size | |||||||||||||||||
| 1" | No. 3 | 11/32" | 0.477" | 0.153" | 0.21" | B | T27 | 14 | 82° | Standard | 25 | 94625A131 | 00000 | 7233A67 | 0000 | ||
| 1 1/2" | No. 3 | 11/32" | 0.477" | 0.153" | 0.21" | B | T27 | 14 | 82° | Standard | 25 | 94625A132 | 00000 | 7233A67 | 0000 | ||
| 2" | No. 3 | 11/32" | 0.477" | 0.153" | 0.21" | B | T27 | 14 | 82° | Standard | 25 | 94625A133 | 00000 | 7233A67 | 0000 | ||
Steel Torx Serrated-Flange Hex Head Drilling Screws
 |
Two ways to install—use a Torx driver in the recess or grip the hex head with a nutdriver for more torque. These screws drill and fasten in one step. The serrated flange grips surfaces to resist mild vibration and spreads the load to prevent crushing thin metal.
Zinc-Plated Steel—A common choice for areas with occasional exposure to moisture.
Drill Tip | Head | |||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Lg. | Point Size | Lg. | Wd. | Ht. | Flange Dia. | Max. Drilling Thk. | Tapping Screw Type | Drive Size | Approx. Threads per In. | Pkg. Qty. | Pkg. | |||
Zinc-Plated Steel | ||||||||||||||
No. 8 Screw Size | ||||||||||||||
| 1/2" | No. 2 | 3/16" | 0.25" | 0.197" | 0.37" | 0.098" | BSD | T20 | 18 | 50 | 94425A510 | 000000 | ||
| 3/4" | No. 2 | 3/16" | 0.25" | 0.197" | 0.37" | 0.098" | BSD | T20 | 18 | 25 | 94425A530 | 0000 | ||
No. 10 Screw Size | ||||||||||||||
| 3/4" | No. 3 | 1/4" | 0.313" | 0.216" | 0.445" | 0.15" | BSD | T25 | 16 | 50 | 94425A640 | 0000 | ||
| 1" | No. 3 | 1/4" | 0.313" | 0.216" | 0.445" | 0.15" | BSD | T25 | 16 | 25 | 94425A660 | 0000 | ||
No. 12 Screw Size | ||||||||||||||
| 3/4" | No. 3 | 9/32" | 0.313" | 0.261" | 0.445" | 0.187" | BSD | T27 | 14 | 50 | 94425A770 | 00000 | ||
| 1" | No. 3 | 9/32" | 0.313" | 0.261" | 0.445" | 0.187" | BSD | T27 | 14 | 25 | 94425A790 | 00000 | ||
1/4" Screw Size | ||||||||||||||
| 3/4" | No. 3 | 5/16" | 0.375" | 0.303" | 0.55" | 0.21" | BSD | T30 | 14 | 25 | 94425A810 | 00000 | ||
| 1" | No. 3 | 5/16" | 0.375" | 0.303" | 0.55" | 0.21" | BSD | T30 | 14 | 25 | 94425A830 | 00000 | ||
Steel Torx Flat Head Drilling Screws for Joining Wood to Sheet Metal
 |
These Torx screws join wood to sheet metal by drilling, tapping, and fastening in one go. Their self-drilling tip clears the way while their threads tap into the material. With a deep six-lobe opening, the Torx drive handles more torque than slotted, Phillips, and hex drives. The flat head deters snags.
Length is measured from the top of the head.
Zinc-Plated Steel—A common choice for areas with occasional exposure to moisture.
Head | |||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Lg. | Dia. | Ht. | Drill Point Size | Drill Tip Lg. | For Wood Thk. Range | For Metal Thk. Range | Flat Head Profile | Approx. Threads per In. | Threading | Tapping Method | Pkg. Qty. | Pkg. | |||
Zinc-Plated Steel | |||||||||||||||
No. 10 | |||||||||||||||
| 1" | 0.48" | 0.136" | No. 3 | 1/4" | 0.25" to 0.375" | 0.11" to 0.21" | Standard | 16 | Fully Threaded | Thread Forming | 50 | 90425A460 | 000000 | ||
| 1 1/4" | 0.48" | 0.136" | No. 3 | 1/4" | 0.375" to 0.5" | 0.11" to 0.21" | Standard | 16 | Fully Threaded | Thread Forming | 50 | 90425A461 | 00000 | ||
Distortion-Free Screws for Composite Wood
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Head | |||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Lg. | Dia. | Ht. | Drill Bit Size | Rounded Head Profile | Approx. Threads per In. | Threading | Tapping Method | Tapping Screw Type | Pkg. Qty. | Pkg. | |||
18-8 Stainless Steel | |||||||||||||
No. 10 | |||||||||||||
| 2 1/2" | 0.317" | 0.087" | 3/32" | Narrow | 9 | Fully Threaded | Thread Cutting | 17 | 25 | 98419A330 | 000000 | ||
| 2 3/4" | 0.266" | 0.11" | 3/32" | Narrow | 13 | Fully Threaded | Thread Cutting | 17 | 25 | 98419A440 | 00000 | ||
