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For Use In For Use In |
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About Tapping Screws
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Steel Flat Head Screws for Plywood and Oriented Strand Board
These steel screws are zinc plated to resist corrosion in wet environments. They are beveled under the head for use in countersunk holes. They penetrate plywood and oriented strand board (OSB) without splitting. Threads are serrated for lower driving torque. Length is measured from the top of the head.
For technical drawings and 3-D models, click on a part number.
Head | Drive | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Lg. | Dia. | Ht. | Size | Style | Drill Bit Size | Approximate Threads per Inch | Minimum Thread Length | Pkg. Qty. | Pkg. | |
Zinc-Plated Steel | ||||||||||
No. 6 | ||||||||||
| 1/2" | 0.3" | 0.1" | No. 1/No. 2 | Square/Phillips | 1/16" | 18 | __ | 50 | 000000000 | 00000 |
| 5/8" | 0.3" | 0.1" | No. 1/No. 2 | Square/Phillips | 1/16" | 18 | __ | 50 | 000000000 | 0000 |
| 3/4" | 0.3" | 0.1" | No. 1/No. 2 | Square/Phillips | 1/16" | 18 | __ | 45 | 000000000 | 0000 |
| 1" | 0.3" | 0.1" | No. 1/No. 2 | Square/Phillips | 1/16" | 18 | __ | 40 | 000000000 | 0000 |
| 1 1/4" | 0.3" | 0.1" | No. 1/No. 2 | Square/Phillips | 1/16" | 18 | __ | 35 | 000000000 | 0000 |
| 1 1/2" | 0.3" | 0.1" | No. 1/No. 2 | Square/Phillips | 1/16" | 18 | __ | 30 | 000000000 | 0000 |
No. 8 | ||||||||||
| 5/8" | 0.3" | 0.11" | No. 2/No. 2 | Square/Phillips | 5/64" | 15 | __ | 40 | 000000000 | 0000 |
| 3/4" | 0.3" | 0.11" | No. 2/No. 2 | Square/Phillips | 5/64" | 15 | __ | 35 | 000000000 | 0000 |
| 1" | 0.3" | 0.11" | No. 2/No. 2 | Square/Phillips | 5/64" | 15 | __ | 75 | 000000000 | 00000 |
| 1 1/4" | 0.3" | 0.11" | No. 2/No. 2 | Square/Phillips | 5/64" | 15 | __ | 30 | 000000000 | 0000 |
| 1 1/2" | 0.3" | 0.11" | No. 2/No. 2 | Square/Phillips | 5/64" | 15 | __ | 25 | 000000000 | 0000 |
| 1 3/4" | 0.3" | 0.11" | No. 2/No. 2 | Square/Phillips | 5/64" | 15 | __ | 20 | 000000000 | 0000 |
| 2" | 0.3" | 0.11" | No. 2/No. 2 | Square/Phillips | 5/64" | 15 | __ | 20 | 000000000 | 0000 |
| 2 1/2" | 0.3" | 0.11" | No. 2/No. 2 | Square/Phillips | 5/64" | 15 | 1.97" | 133 | 000000000 | 00000 |
No. 10 | ||||||||||
| 3/4" | 0.4" | 0.13" | No. 2/No. 2 | Square/Phillips | 3/32" | 13 | __ | 25 | 000000000 | 0000 |
| 1" | 0.4" | 0.13" | No. 2/No. 2 | Square/Phillips | 3/32" | 13 | __ | 20 | 000000000 | 0000 |
| 1 1/4" | 0.4" | 0.13" | No. 2/No. 2 | Square/Phillips | 3/32" | 13 | __ | 20 | 000000000 | 0000 |
| 1 1/2" | 0.4" | 0.13" | No. 2/No. 2 | Square/Phillips | 3/32" | 13 | __ | 130 | 000000000 | 00000 |
| 2" | 0.4" | 0.13" | No. 2/No. 2 | Square/Phillips | 3/32" | 13 | __ | 105 | 000000000 | 00000 |
| 2 1/2" | 0.4" | 0.13" | No. 2/No. 2 | Square/Phillips | 3/32" | 13 | 2.275" | 88 | 000000000 | 00000 |
| 3" | 0.4" | 0.13" | No. 2/No. 2 | Square/Phillips | 3/32" | 13 | 2.375" | 72 | 000000000 | 00000 |
| 3 1/2" | 0.4" | 0.13" | No. 2/No. 2 | Square/Phillips | 3/32" | 13 | 2.375" | 57 | 000000000 | 00000 |
Super-Corrosion-Resistant 316 Stainless Steel Flat
Head Screws for Plywood and Oriented Strand Board
 |  |
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More corrosion resistant than 18-8 stainless steel screws, these have excellent resistance to chemicals and salt water and are a good choice for ACQ-treated (arsenic-free) lumber. They are beveled under the head for use in countersunk holes. All penetrate plywood and oriented strand board (OSB) without splitting. Threads are serrated for lower driving torque. Screws may be mildly magnetic. 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 | Threading | Min. Thread Lg. | Pkg. Qty. | Pkg. | |
316 Stainless Steel—69° Countersink Angle | ||||||||||
No. 6 | ||||||||||
| 1/2" | 0.262" | 0.134" | No. 2 | 1/16" | 18 | Fully Threaded | __ | 100 | 000000000 | 000000 |
| 3/4" | 0.262" | 0.134" | No. 2 | 1/16" | 18 | Fully Threaded | __ | 100 | 000000000 | 00000 |
| 1" | 0.262" | 0.134" | No. 2 | 1/16" | 18 | Fully Threaded | __ | 50 | 000000000 | 00000 |
No. 8 | ||||||||||
| 3/4" | 0.312" | 0.134" | No. 2 | 5/64" | 15 | Fully Threaded | __ | 100 | 000000000 | 00000 |
| 1" | 0.312" | 0.134" | No. 2 | 5/64" | 15 | Fully Threaded | __ | 50 | 000000000 | 00000 |
No. 10 | ||||||||||
| 1 1/2" | 0.312" | 0.14" | No. 2 | 3/32" | 13 | Partially Threaded | 3/4" | 50 | 000000000 | 00000 |
316 Stainless Steel—83° Countersink Angle | ||||||||||
No. 8 | ||||||||||
| 1 1/4" | 0.312" | 0.134" | No. 2 | 5/64" | 18 | Partially Threaded | 3/4" | 15 | 000000000 | 00000 |
| 1 1/2" | 0.302" | 0.134" | No. 2 | 5/64" | 18 | Partially Threaded | 1" | 15 | 000000000 | 00000 |
316 Stainless Steel—88° Countersink Angle | ||||||||||
No. 10 | ||||||||||
| 1" | 0.347" | 0.13" | No. 2 | 3/32" | 16 | Fully Threaded | __ | 15 | 000000000 | 00000 |
18-8 Stainless Steel Flat Head Screws for Plywood and Oriented Strand Board
18-8 stainless steel screws have good chemical resistance and are a good choice for ACQ-treated (arsenic-free) lumber. They are beveled under the head for use in countersunk holes. They penetrate plywood and oriented strand board (OSB) without splitting. Threads are serrated for lower driving torque. Screws may be mildly magnetic. Length is measured from the top of the head.
For technical drawings and 3-D models, click on a part number.
Head | Drive | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Lg. | Dia. | Ht. | Size | Style | Drill Bit Size | Approximate Threads per Inch | Threading | Min. Thread Lg. | Pkg. Qty. | Pkg. | |
18-8 Stainless Steel | |||||||||||
No. 9 | |||||||||||
| 1 1/2" | 0.346" | 0.143" | No. 2 | Square/Phillips | 5/64" | 14 | Partially Threaded | 3/4" | 50 | 000000000 | 000000 |
| 2" | 0.346" | 0.143" | No. 2 | Square/Phillips | 5/64" | 14 | Partially Threaded | 3/4" | 50 | 000000000 | 00000 |
| 2 1/2" | 0.346" | 0.143" | No. 2 | Square/Phillips | 5/64" | 14 | Partially Threaded | 3/4" | 25 | 000000000 | 00000 |
No. 10 | |||||||||||
| 2 1/2" | 0.348" | 0.134" | No. 2 | Square/Phillips | 3/32" | 13 | Partially Threaded | 3/4" | 25 | 000000000 | 00000 |
| 3" | 0.348" | 0.134" | No. 2 | Square/Phillips | 3/32" | 13 | Partially Threaded | 3/4" | 25 | 000000000 | 00000 |
Stainless Steel Rounded Head Screws for Plywood and Oriented Strand Board
These 316 stainless steel screws have excellent resistance to chemicals and salt water and are a good choice for ACQ-treated (arsenic-free) lumber. They penetrate plywood and oriented strand board (OSB) without splitting. Threads are serrated for lower driving torque. Screws may be mildly magnetic. 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 | Threading | Min. Thread Lg. | Pkg. Qty. | Pkg. | |
316 Stainless Steel | ||||||||||
No. 6 | ||||||||||
| 1/2" | 0.263" | 0.097" | No. 2 | 1/16" | 18 | Fully Threaded | __ | 100 | 000000000 | 000000 |
| 3/4" | 0.263" | 0.097" | No. 2 | 1/16" | 18 | Fully Threaded | __ | 100 | 000000000 | 00000 |
| 1" | 0.263" | 0.097" | No. 2 | 1/16" | 18 | Fully Threaded | __ | 50 | 000000000 | 00000 |
No. 8 | ||||||||||
| 3/4" | 0.314" | 0.097" | No. 2 | 5/64" | 15 | Fully Threaded | __ | 100 | 000000000 | 00000 |
| 1" | 0.314" | 0.11" | No. 2 | 5/64" | 15 | Fully Threaded | __ | 50 | 000000000 | 00000 |
| 1 1/4" | 0.314" | 0.11" | No. 2 | 5/64" | 15 | Partially Threaded | 3/4" | 50 | 000000000 | 00000 |
| 1 1/2" | 0.314" | 0.11" | No. 2 | 5/64" | 15 | Partially Threaded | 3/4" | 25 | 000000000 | 0000 |
No. 10 | ||||||||||
| 3/4" | 0.365" | 0.128" | No. 2 | 3/32" | 13 | Fully Threaded | __ | 50 | 000000000 | 00000 |
| 1" | 0.365" | 0.128" | No. 2 | 3/32" | 13 | Fully Threaded | __ | 50 | 000000000 | 00000 |
| 1 1/4" | 0.365" | 0.128" | No. 2 | 3/32" | 13 | Partially Threaded | 3/4" | 50 | 000000000 | 00000 |
| 1 1/2" | 0.365" | 0.128" | No. 2 | 3/32" | 13 | Partially Threaded | 3/4" | 50 | 000000000 | 00000 |
No. 12 | ||||||||||
| 1" | 0.416" | 0.145" | No. 3 | 3/16" | 16 | Fully Threaded | __ | 25 | 000000000 | 00000 |
| 1 1/2" | 0.416" | 0.145" | No. 3 | 3/16" | 16 | Partially Threaded | 3/4" | 25 | 000000000 | 00000 |
| 2" | 0.416" | 0.145" | No. 3 | 3/16" | 16 | Partially Threaded | 3/4" | 10 | 000000000 | 0000 |
Steel Rounded Head Screws for Plywood and Oriented Strand Board
These screws are zinc plated to resist corrosion in wet environments. They penetrate plywood and oriented strand board (OSB) without splitting. Threads are serrated for lower driving torque. Length is measured from under the head.
For technical drawings and 3-D models, click on a part number.
Head | Drive | ||||||||
|---|---|---|---|---|---|---|---|---|---|
| Lg. | Dia. | Ht. | Size | Style | Drill Bit Size | Approximate Threads per Inch | Pkg. Qty. | Pkg. | |
Zinc-Plated Steel | |||||||||
No. 6 | |||||||||
| 1/2" | 0.26" | 0.1" | No. 1/No. 2 | Square/Phillips | 1/16" | 18 | 50 | 000000000 | 00000 |
| 5/8" | 0.26" | 0.1" | No. 1/No. 2 | Square/Phillips | 1/16" | 18 | 50 | 000000000 | 0000 |
| 3/4" | 0.26" | 0.1" | No. 1/No. 2 | Square/Phillips | 1/16" | 18 | 100 | 000000000 | 0000 |
No. 8 | |||||||||
| 3/4" | 0.33" | 0.11" | No. 2/No. 2 | Square/Phillips | 5/64" | 15 | 35 | 000000000 | 0000 |
| 1" | 0.33" | 0.11" | No. 2/No. 2 | Square/Phillips | 5/64" | 15 | 30 | 000000000 | 0000 |
| 1 1/4" | 0.33" | 0.11" | No. 2/No. 2 | Square/Phillips | 5/64" | 15 | 30 | 000000000 | 0000 |
| 1 1/2" | 0.33" | 0.11" | No. 2/No. 2 | Square/Phillips | 5/64" | 15 | 25 | 000000000 | 0000 |
| 2" | 0.33" | 0.11" | No. 2/No. 2 | Square/Phillips | 5/64" | 15 | 140 | 000000000 | 00000 |
No. 10 | |||||||||
| 5/8" | 0.37" | 0.13" | No. 2/No. 2 | Square/Phillips | 3/32" | 13 | 25 | 000000000 | 0000 |
| 3/4" | 0.37" | 0.13" | No. 2/No. 2 | Square/Phillips | 3/32" | 13 | 20 | 000000000 | 0000 |
| 1" | 0.37" | 0.13" | No. 2/No. 2 | Square/Phillips | 3/32" | 13 | 20 | 000000000 | 0000 |
Strip-Resistant Drilling Screws for Metal
Serrations under the head act as a brake to prevent overtightening and damaging threads. The flange reduces the risk of crushing thin metal. They save you time and effort by drilling their own holes and fastening in a single operation. A hex head provides a larger gripping area for installation with a wrench or socket driver. Length is measured from under the flange. Head height includes the flange.
Screws with 0.15" head height are used in low-clearance applications.
External Hex/Torx drive screws give you the choice to install with a wrench or a Torx driver.
Zinc-plated steel screws resist corrosion in wet environments.
Ultra-corrosion-resistant-coated steel screws are more corrosion resistant than zinc-plated screws.
For technical drawings and 3-D models, click on a part number.
Drill Tip | Head | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Lg. | Type | Lg. | Max. Drilling Thick. | Wd. | Ht. | Flange Dia. | Drive Size | Approximate Threads per Inch | For Use In | Pkg. Qty. | Pkg. | |
External Hex/Torx—Zinc-Plated Steel | ||||||||||||
No. 8 | ||||||||||||
| 1/2" | No. 2 | 3/16" | 0.098" | 0.25" | 0.197" | 0.37" | T20 | 18 | Steel, Sheet Metal | 50 | 000000000 | 000000 |
| 3/4" | No. 2 | 3/16" | 0.098" | 0.25" | 0.197" | 0.37" | T20 | 18 | Steel, Sheet Metal | 25 | 000000000 | 0000 |
No. 10 | ||||||||||||
| 3/4" | No. 3 | 1/4" | 0.15" | 0.313" | 0.216" | 0.445" | T25 | 16 | Steel, Sheet Metal | 50 | 000000000 | 0000 |
| 1" | No. 3 | 1/4" | 0.15" | 0.313" | 0.216" | 0.445" | T25 | 16 | Steel, Sheet Metal | 25 | 000000000 | 0000 |
No. 12 | ||||||||||||
| 3/4" | No. 3 | 9/32" | 0.187" | 0.313" | 0.261" | 0.445" | T27 | 14 | Steel, Sheet Metal | 50 | 000000000 | 00000 |
| 1" | No. 3 | 9/32" | 0.187" | 0.313" | 0.261" | 0.445" | T27 | 14 | Steel, Sheet Metal | 25 | 000000000 | 00000 |
1/4" | ||||||||||||
| 3/4" | No. 3 | 5/16" | 0.21" | 0.375" | 0.303" | 0.55" | T30 | 14 | Steel, Sheet Metal | 25 | 000000000 | 00000 |
| 1" | No. 3 | 5/16" | 0.21" | 0.375" | 0.303" | 0.55" | T30 | 14 | Steel, Sheet Metal | 25 | 000000000 | 00000 |
External Hex—Zinc-Plated Steel | ||||||||||||
No. 8 | ||||||||||||
| 1/2" | No. 2 | 3/16" | 0.098" | 0.25" | 0.195" | 0.375" | __ | 18 | Steel, Sheet Metal | 100 | 000000000 | 00000 |
| 9/16" | No. 2 | 9/64" | 0.098" | 0.25" | 0.15" | 0.348" | __ | 18 | Steel, Sheet Metal | 25 | 000000000 | 00000 |
| 3/4" | No. 2 | 3/16" | 0.098" | 0.25" | 0.195" | 0.375" | __ | 18 | Steel, Sheet Metal | 100 | 000000000 | 0000 |
| 1" | No. 2 | 3/16" | 0.098" | 0.25" | 0.195" | 0.375" | __ | 18 | Steel, Sheet Metal | 100 | 000000000 | 00000 |
No. 10 | ||||||||||||
| 3/4" | No. 3 | 1/4" | 0.15" | 0.313" | 0.229" | 0.465" | __ | 16 | Steel, Sheet Metal | 100 | 000000000 | 00000 |
| 1" | No. 3 | 1/4" | 0.15" | 0.313" | 0.229" | 0.465" | __ | 16 | Steel, Sheet Metal | 100 | 000000000 | 00000 |
No. 12 | ||||||||||||
| 3/4" | No. 3 | 9/32" | 0.187" | 0.313" | 0.26" | 0.52" | __ | 14 | Steel, Sheet Metal | 50 | 000000000 | 0000 |
| 1" | No. 3 | 9/32" | 0.187" | 0.313" | 0.26" | 0.52" | __ | 14 | Steel, Sheet Metal | 50 | 000000000 | 00000 |
1/4" | ||||||||||||
| 3/4" | No. 3 | 5/16" | 0.21" | 0.375" | 0.3" | 0.595" | __ | 14 | Steel, Sheet Metal | 50 | 000000000 | 00000 |
| 1" | No. 3 | 5/16" | 0.21" | 0.375" | 0.3" | 0.595" | __ | 14 | Steel, Sheet Metal | 50 | 000000000 | 00000 |
| 1 1/4" | No. 3 | 5/16" | 0.21" | 0.375" | 0.3" | 0.595" | __ | 14 | Steel, Sheet Metal | 50 | 000000000 | 00000 |
External Hex—Ultra-Corrosion-Resistant-Coated Steel | ||||||||||||
1/4" | ||||||||||||
| 3/4" | No. 3 | 13/32" | 0.21" | 0.438" | 0.23" | 0.575" | __ | 14 | Steel, Sheet Metal | 50 | 000000000 | 00000 |
External Hex—Corrosion-Resistant-Coated Steel | ||||||||||||
1/4" | ||||||||||||
| 1" | No. 3 | 5/16" | 0.21" | 0.438" | 0.23" | 0.61" | __ | 14 | Steel, Sheet Metal | 50 | 000000000 | 00000 |