About Tapping Screws
More
Steel Drilling Screws with Washer for Metal
These steel screws are available with corrosion resistant finishes. A rubber-bonded washer compresses to form a watertight seal. They save you time and effort by drilling their own holes and fastening in a single operation. Length is measured from under the head.
Zinc-plated steel screws resist corrosion in wet environments.
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. | Washer OD | Thread Size  | Approximate Threads per Inch | For Use In | Pkg. Qty. | Pkg. | |
Zinc-Plated Steel | ||||||||||||
No. 8 | ||||||||||||
| 3/4" | No. 2 | 3/16" | 0.098" | 0.25" | 0.242" | 0.5" | __ | 18 | Steel, Sheet Metal | 50 | 000000000 | 00000 |
| 1" | No. 2 | 0.148" | 0.098" | 0.25" | 0.248" | 0.5" | __ | 18 | Steel, Sheet Metal | 25 | 000000000 | 0000 |
| 1 1/2" | No. 2 | 9/64" | 0.098" | 0.25" | 0.242" | 0.5" | __ | 18 | Steel, Sheet Metal | 25 | 000000000 | 0000 |
No. 10 | ||||||||||||
| 3/4" | No. 3 | 1/4" | 0.15" | 0.313" | 0.252" | 0.5" | __ | 16 | Steel, Sheet Metal | 100 | 000000000 | 00000 |
| 1" | No. 3 | 1/4" | 0.176" | 0.313" | 0.279" | 0.5" | __ | 16 | Steel, Sheet Metal | 100 | 000000000 | 00000 |
| 1 1/4" | No. 3 | 7/32" | 0.15" | 0.313" | 0.252" | 0.5" | __ | 16 | Steel, Sheet Metal | 50 | 000000000 | 00000 |
No. 12 | ||||||||||||
| 3/4" | No. 3 | 9/32" | 0.187" | 0.313" | 0.295" | 0.563" | __ | 14 | Steel, Sheet Metal | 100 | 000000000 | 00000 |
| 7/8" | No. 4 | 0.325" | 0.21" | 0.313" | 0.303" | 0.563" | 12-24 | __ | Steel, Sheet Metal | 50 | 000000000 | 00000 |
| 1" | No. 3 | 9/32" | 0.187" | 0.313" | 0.295" | 0.563" | __ | 14 | Steel, Sheet Metal | 100 | 000000000 | 00000 |
| 1 1/4" | No. 3 | 0.254" | 0.187" | 0.313" | 0.303" | 0.563" | __ | 14 | Steel, Sheet Metal | 50 | 000000000 | 00000 |
| 1 1/4" | No. 4 | 0.325" | 0.21" | 0.313" | 0.303" | 0.563" | 12-24 | __ | Steel, Sheet Metal | 10 | 000000000 | 00000 |
| 1 1/4" | No. 5 | 45/64" | 0.5" | 0.313" | 0.295" | 0.563" | 12-24 | __ | Steel, Sheet Metal | 50 | 000000000 | 00000 |
| 1 1/2" | No. 5 | 21/32" | 0.5" | 0.313" | 0.295" | 0.563" | 12-24 | __ | Steel, Sheet Metal | 25 | 000000000 | 00000 |
| 2" | No. 3 | 0.254" | 0.187" | 0.313" | 0.303" | 0.563" | __ | 14 | Steel, Sheet Metal | 50 | 000000000 | 00000 |
| 2" | No. 5 | 21/32" | 0.5" | 0.313" | 0.295" | 0.563" | 12-24 | __ | Steel, Sheet Metal | 25 | 000000000 | 00000 |
| 2 1/2" | No. 3 | 0.254" | 0.187" | 0.313" | 0.303" | 0.563" | __ | 14 | Steel, Sheet Metal | 25 | 000000000 | 00000 |
| 3" | No. 3 | 1/4" | 0.187" | 0.313" | 0.295" | 0.563" | __ | 14 | Steel, Sheet Metal | 10 | 000000000 | 00000 |
1/4" | ||||||||||||
| 3/4" | No. 3 | 5/16" | 0.22" | 0.375" | 0.365" | 0.625" | __ | 14 | Steel, Sheet Metal | 50 | 000000000 | 00000 |
| 1" | No. 3 | 5/16" | 0.21" | 0.375" | 0.341" | 0.625" | __ | 14 | Steel, Sheet Metal | 50 | 000000000 | 00000 |
| 1 1/2" | No. 3 | 5/16" | 0.21" | 0.375" | 0.341" | 0.625" | __ | 14 | Steel, Sheet Metal | 50 | 000000000 | 00000 |
| 2 1/2" | No. 3 | 1/4" | 0.21" | 0.375" | 0.341" | 0.625" | __ | 14 | Steel, Sheet Metal | 25 | 000000000 | 00000 |
| 3" | No. 3 | 5/16" | 0.21" | 0.375" | 0.341" | 0.625" | __ | 14 | Steel, Sheet Metal | 25 | 000000000 | 00000 |
Corrosion-Resistant-Coated Steel | ||||||||||||
No. 10 | ||||||||||||
| 3/4" | No. 3 | 1/4" | 0.15" | 0.313" | 0.305" | 0.5" | __ | 16 | Steel, Sheet Metal | 50 | 000000000 | 00000 |
| 1" | No. 2 | 3/16" | 0.106" | 0.313" | 0.265" | 0.5" | __ | 16 | Steel, Sheet Metal | 25 | 000000000 | 00000 |
| 1 1/2" | No. 3 | 1/4" | 0.15" | 0.313" | 0.252" | 0.5" | __ | 16 | Steel, Sheet Metal | 50 | 000000000 | 00000 |
| 1 1/2" | No. 4 | 19/64" | 0.175" | 0.313" | 0.265" | 0.5" | __ | 16 | Steel, Sheet Metal | 50 | 000000000 | 00000 |
| 2" | No. 3 | 7/32" | 0.15" | 0.313" | 0.28" | 0.5" | __ | 16 | Steel, Sheet Metal | 25 | 000000000 | 00000 |
No. 12 | ||||||||||||
| 3/4" | No. 3 | 9/32" | 0.21" | 0.313" | 0.255" | 0.563" | __ | 14 | Steel, Sheet Metal | 50 | 000000000 | 0000 |
| 7/8" | No. 4 | 9/32" | 0.21" | 0.313" | 0.285" | 0.563" | 12-24 | __ | Steel, Sheet Metal | 50 | 000000000 | 00000 |
| 1" | No. 2 | 1/2" | 0.14" | 0.313" | 0.34" | 0.563" | __ | 14 | Steel, Sheet Metal | 25 | 000000000 | 00000 |
| 1 1/4" | No. 2 | 1/2" | 0.14" | 0.313" | 0.38" | 0.563" | __ | 14 | Steel, Sheet Metal | 50 | 000000000 | 00000 |
| 1 1/4" | No. 4.5 | 1/2" | 0.375" | 0.313" | 0.285" | 0.563" | 12-24 | __ | Steel, Sheet Metal | 25 | 000000000 | 00000 |
| 1 1/4" | No. 5 | 45/64" | 0.5" | 0.313" | 0.285" | 0.563" | 12-24 | __ | Steel, Sheet Metal | 25 | 000000000 | 00000 |
| 1 1/2" | No. 2 | 1/2" | 0.14" | 0.313" | 0.38" | 0.563" | __ | 14 | Steel, Sheet Metal | 25 | 000000000 | 00000 |
| 1 1/2" | No. 3 | 9/32" | 0.187" | 0.313" | 0.295" | 0.563" | __ | 14 | Steel, Sheet Metal | 50 | 000000000 | 00000 |
| 1 1/2" | No. 4.5 | 0.426" | 0.375" | 0.313" | 0.303" | 0.563" | 12-24 | __ | Steel, Sheet Metal | 10 | 000000000 | 00000 |
| 1 1/2" | No. 5 | 45/64" | 0.5" | 0.313" | 0.285" | 0.563" | 12-24 | __ | Steel, Sheet Metal | 10 | 000000000 | 00000 |
| 2" | No. 2 | 1/2" | 0.14" | 0.313" | 0.34" | 0.563" | __ | 14 | Steel, Sheet Metal | 10 | 000000000 | 0000 |
| 2" | No. 5 | 45/64" | 0.5" | 0.313" | 0.285" | 0.563" | 12-24 | __ | Steel, Sheet Metal | 10 | 000000000 | 00000 |
| 2 1/2" | No. 3 | 1/4" | 0.187" | 0.313" | 0.34" | 0.563" | __ | 14 | Steel, Sheet Metal | 25 | 000000000 | 00000 |
| 3" | No. 3 | 9/32" | 0.187" | 0.313" | 0.273" | 0.563" | __ | 14 | Steel, Sheet Metal | 10 | 000000000 | 00000 |
| 3" | No. 5 | 21/32" | 0.5" | 0.313" | 0.305" | 0.563" | 12-24 | __ | Steel, Sheet Metal | 10 | 000000000 | 00000 |
| 4" | No. 3 | 9/32" | 0.21" | 0.313" | 0.255" | 0.563" | __ | 14 | Steel, Sheet Metal | 10 | 000000000 | 0000 |
1/4" | ||||||||||||
| 7/8" | No. 1 | 5/16" | 0.048" | 0.375" | 0.341" | 0.625" | __ | 14 | Steel, Sheet Metal | 10 | 000000000 | 0000 |
| 7/8" | No. 1 | 5/16" | 0.048" | 0.375" | 0.38" | 0.563" | __ | 14 | Steel, Sheet Metal | 25 | 000000000 | 00000 |
| 1" | No. 3 | 5/16" | 0.21" | 0.375" | 0.405" | 0.563" | __ | 14 | Steel, Sheet Metal | 25 | 000000000 | 00000 |
| 1 1/4" | No. 3 | 5/16" | 0.21" | 0.375" | 0.38" | 0.563" | __ | 14 | Steel, Sheet Metal | 25 | 000000000 | 00000 |
| 1 1/2" | No. 3 | 5/16" | 0.21" | 0.375" | 0.405" | 0.563" | __ | 14 | Steel, Sheet Metal | 25 | 000000000 | 00000 |
| 2" | No. 3 | 5/16" | 0.21" | 0.375" | 0.323" | 0.563" | __ | 14 | Steel, Sheet Metal | 25 | 000000000 | 00000 |
| 3" | No. 3 | 5/16" | 0.21" | 0.375" | 0.36" | 0.625" | __ | 14 | Steel, Sheet Metal | 10 | 000000000 | 00000 |
| 4" | No. 3 | 5/16" | 0.21" | 0.375" | 0.36" | 0.625" | __ | 14 | Steel, Sheet Metal | 10 | 000000000 | 00000 |
Steel Drilling Screws with Corrosion-Resistant Head and Washer for Metal
These steel screws have a head encapsulated by chemical-resistant 18-8 stainless steel. A rubber-bonded washer compresses to form a watertight seal. They save you time and effort by drilling their own holes and fastening in a single operation. 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. | Wd. | Ht. | Washer OD | Thread Size | Approximate Threads per Inch | For Use In | Pkg. Qty. | Pkg. | |
Steel with 18-8 Stainless Steel Head Cap | ||||||||||||
No. 12 | ||||||||||||
| 1" | No. 2 | 1/2" | 0.14" | 0.313" | 0.35" | 0.438" | __ | 14 | Steel, Sheet Metal | 25 | 000000000 | 000000 |
| 1 1/4" | No. 2 | 1/2" | 0.14" | 0.313" | 0.35" | 0.438" | __ | 14 | Steel, Sheet Metal | 25 | 000000000 | 00000 |
| 1 1/2" | No. 2 | 1/2" | 0.14" | 0.313" | 0.35" | 0.438" | __ | 14 | Steel, Sheet Metal | 25 | 000000000 | 00000 |
| 2" | No. 5 | 45/64" | 0.5" | 0.313" | 0.35" | 0.438" | 12-24 | __ | Steel, Sheet Metal | 10 | 000000000 | 00000 |
1/4" | ||||||||||||
| 7/8" | No. 1 | 5/16" | 0.048" | 0.313" | 0.35" | 0.438" | __ | 14 | Steel, Sheet Metal | 25 | 000000000 | 00000 |
| 1 1/8" | No. 1 | 5/16" | 0.048" | 0.313" | 0.35" | 0.438" | __ | 14 | Steel, Sheet Metal | 25 | 000000000 | 00000 |
Stainless Steel Drilling Screws with Washer for Metal
Made from 410 stainless steel, these screws are strong, wear resistant, and mildly chemical resistant. A rubber-bonded washer compresses to form a watertight seal. They save you time and effort by drilling their own holes and fastening in a single operation. 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. | Wd. | Ht. | Washer OD | Thread Size | Approximate Threads per Inch | For Use In | Pkg. Qty. | Pkg. | |
Zinc-Plated 410 Stainless Steel | ||||||||||||
No. 8 | ||||||||||||
| 1/2" | No. 2 | 3/16" | 0.098" | 0.25" | 0.211" | 0.5" | __ | 18 | Stainless Steel, Sheet Metal | 25 | 000000000 | 000000 |
| 3/4" | No. 2 | 3/16" | 0.098" | 0.25" | 0.211" | 0.5" | __ | 18 | Stainless Steel, Sheet Metal | 25 | 000000000 | 00000 |
| 1" | No. 2 | 3/16" | 0.098" | 0.25" | 0.29" | 0.5" | __ | 18 | Stainless Steel, Sheet Metal | 25 | 000000000 | 0000 |
| 1 1/4" | No. 2 | 3/16" | 0.098" | 0.25" | 0.29" | 0.5" | __ | 18 | Stainless Steel, Sheet Metal | 25 | 000000000 | 00000 |
No. 10 | ||||||||||||
| 5/8" | No. 3 | 1/4" | 0.15" | 0.313" | 0.221" | 0.5" | __ | 16 | Stainless Steel, Sheet Metal | 25 | 000000000 | 00000 |
| 3/4" | No. 3 | 1/4" | 0.15" | 0.313" | 0.221" | 0.5" | __ | 16 | Stainless Steel, Sheet Metal | 25 | 000000000 | 00000 |
| 1" | No. 3 | 1/4" | 0.15" | 0.313" | 0.221" | 0.5" | __ | 16 | Stainless Steel, Sheet Metal | 25 | 000000000 | 00000 |
| 1 1/4" | No. 3 | 1/4" | 0.15" | 0.313" | 0.3" | 0.5" | __ | 16 | Stainless Steel, Sheet Metal | 25 | 000000000 | 0000 |
| 1 1/2" | No. 3 | 1/4" | 0.15" | 0.313" | 0.3" | 0.5" | __ | 16 | Stainless Steel, Sheet Metal | 25 | 000000000 | 00000 |
| 2" | No. 3 | 1/4" | 0.15" | 0.313" | 0.3" | 0.5" | __ | 16 | Stainless Steel, Sheet Metal | 25 | 000000000 | 00000 |
No. 12 | ||||||||||||
| 3/4" | No. 3 | 9/32" | 0.187" | 0.313" | 0.256" | 0.563" | __ | 14 | Stainless Steel, Sheet Metal | 25 | 000000000 | 00000 |
| 1" | No. 3 | 9/32" | 0.187" | 0.313" | 0.256" | 0.563" | __ | 14 | Stainless Steel, Sheet Metal | 25 | 000000000 | 00000 |
| 1 1/4" | No. 3 | 9/32" | 0.187" | 0.313" | 0.256" | 0.563" | __ | 14 | Stainless Steel, Sheet Metal | 10 | 000000000 | 0000 |
| 1 1/4" | No. 4 | 9/32" | 0.21" | 0.313" | 0.32" | 0.563" | 12-24 | __ | Stainless Steel, Sheet Metal | 10 | 000000000 | 0000 |
| 1 1/4" | No. 5 | 45/64" | 0.5" | 0.313" | 0.256" | 0.563" | 12-24 | __ | Stainless Steel, Sheet Metal | 10 | 000000000 | 00000 |
| 1 1/2" | No. 3 | 9/32" | 0.187" | 0.313" | 0.256" | 0.563" | __ | 14 | Stainless Steel, Sheet Metal | 10 | 000000000 | 0000 |
| 2" | No. 3 | 9/32" | 0.187" | 0.313" | 0.32" | 0.563" | __ | 14 | Stainless Steel, Sheet Metal | 10 | 000000000 | 0000 |
| 2" | No. 5 | 45/64" | 0.5" | 0.313" | 0.32" | 0.563" | 12-24 | __ | Stainless Steel, Sheet Metal | 5 | 000000000 | 0000 |
| 2 1/2" | No. 3 | 9/32" | 0.187" | 0.313" | 0.32" | 0.563" | __ | 14 | Stainless Steel, Sheet Metal | 10 | 000000000 | 0000 |
| 3" | No. 3 | 9/32" | 0.187" | 0.313" | 0.32" | 0.563" | __ | 14 | Stainless Steel, Sheet Metal | 10 | 000000000 | 00000 |
1/4" | ||||||||||||
| 3/4" | No. 3 | 5/16" | 0.21" | 0.375" | 0.291" | 0.625" | __ | 14 | Stainless Steel, Sheet Metal | 10 | 000000000 | 0000 |
| 7/8" | No. 1 | 5/16" | 0.048" | 0.375" | 0.291" | 0.625" | __ | 14 | Stainless Steel, Sheet Metal | 10 | 000000000 | 00000 |
| 1" | No. 3 | 5/16" | 0.21" | 0.375" | 0.291" | 0.625" | __ | 14 | Stainless Steel, Sheet Metal | 10 | 000000000 | 0000 |
| 1 1/4" | No. 3 | 5/16" | 0.21" | 0.375" | 0.291" | 0.625" | __ | 14 | Stainless Steel, Sheet Metal | 10 | 000000000 | 0000 |
| 1 1/2" | No. 3 | 5/16" | 0.21" | 0.375" | 0.291" | 0.625" | __ | 14 | Stainless Steel, Sheet Metal | 10 | 000000000 | 00000 |
| 2" | No. 3 | 5/16" | 0.21" | 0.375" | 0.291" | 0.625" | __ | 14 | Stainless Steel, Sheet Metal | 10 | 000000000 | 00000 |
| 2 1/2" | No. 3 | 5/16" | 0.21" | 0.375" | 0.291" | 0.625" | __ | 14 | Stainless Steel, Sheet Metal | 10 | 000000000 | 00000 |
| 3" | No. 3 | 5/16" | 0.21" | 0.375" | 0.291" | 0.625" | __ | 14 | Stainless Steel, Sheet Metal | 10 | 000000000 | 00000 |
| 4" | No. 3 | 5/16" | 0.21" | 0.375" | 0.355" | 0.625" | __ | 14 | Stainless Steel, Sheet Metal | 5 | 000000000 | 0000 |