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Steel Phillips Flat Head Screws for Sheet Metal
Standard Flat Head
Undercut Flat Head
These steel screws are available with corrosion-resistant finishes. They're beveled under the head for use in countersunk holes. Screws penetrate 0.025" and thinner sheet metal. Length is measured from the top of the head.
Undercut screws allow for more threading.
Zinc-plated steel screws resist corrosion in wet environments.
Black-oxide steel screws are mildly corrosion resistant in dry environments.
Zinc-Plated Steel
Head | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| Lg. | Flat Head Profile | Dia. | Ht. | Drive Size | Drill Bit Size | Approximate Threads per Inch | Pkg. Qty. | Pkg. | |
No. 0  | |||||||||
| 1/4" | Standard | 0.112" | 0.035" | No. 0 | No. 55 | 52 | 10 | 000000000 | 00000 |
| 3/8" | Standard | 0.112" | 0.035" | No. 0 | No. 55 | 52 | 10 | 000000000 | 0000 |
| 1/2" | Standard | 0.112" | 0.035" | No. 0 | No. 55 | 52 | 10 | 000000000 | 0000 |
No. 1 | |||||||||
| 1/4" | Standard | 0.137" | 0.043" | No. 0 | No. 52 | 48 | 10 | 000000000 | 0000 |
| 3/8" | Standard | 0.137" | 0.043" | No. 0 | No. 52 | 48 | 10 | 000000000 | 0000 |
| 1/2" | Standard | 0.137" | 0.043" | No. 0 | No. 52 | 48 | 10 | 000000000 | 0000 |
No. 2 | |||||||||
| 1/4" | Standard | 0.162" | 0.051" | No. 1 | No. 48 | 32 | 50 | 000000000 | 0000 |
| 3/8" | Standard | 0.162" | 0.051" | No. 1 | No. 48 | 32 | 50 | 000000000 | 0000 |
| 1/2" | Standard | 0.162" | 0.051" | No. 1 | No. 48 | 32 | 50 | 000000000 | 0000 |
No. 4 | |||||||||
| 1/4" | Undercut | 0.212" | 0.047" | No. 1 | No. 44 | 24 | 100 | 000000000 | 0000 |
| 3/8" | Standard | 0.212" | 0.067" | No. 1 | No. 44 | 24 | 100 | 000000000 | 0000 |
| 1/2" | Standard | 0.212" | 0.067" | No. 1 | No. 44 | 24 | 100 | 000000000 | 0000 |
| 5/8" | Standard | 0.212" | 0.067" | No. 1 | No. 44 | 24 | 100 | 000000000 | 0000 |
| 3/4" | Standard | 0.212" | 0.067" | No. 1 | No. 44 | 24 | 100 | 000000000 | 0000 |
| 1" | Standard | 0.212" | 0.067" | No. 1 | No. 44 | 24 | 100 | 000000000 | 0000 |
| 1 1/4" | Standard | 0.212" | 0.067" | No. 1 | No. 44 | 24 | 50 | 000000000 | 0000 |
| 1 1/2" | Standard | 0.212" | 0.067" | No. 1 | No. 44 | 24 | 50 | 000000000 | 00000 |
No. 6 | |||||||||
| 1/4" | Undercut | 0.262" | 0.059" | No. 2 | No. 32 | 18 | 100 | 000000000 | 00000 |
| 3/8" | Standard | 0.262" | 0.083" | No. 2 | No. 32 | 18 | 100 | 000000000 | 0000 |
| 1/2" | Standard | 0.262" | 0.083" | No. 2 | No. 32 | 18 | 100 | 000000000 | 0000 |
| 5/8" | Standard | 0.262" | 0.083" | No. 2 | No. 32 | 18 | 100 | 000000000 | 0000 |
| 3/4" | Standard | 0.262" | 0.083" | No. 2 | No. 32 | 18 | 100 | 000000000 | 0000 |
| 7/8" | Standard | 0.262" | 0.083" | No. 2 | No. 32 | 18 | 100 | 000000000 | 0000 |
| 1" | Standard | 0.262" | 0.083" | No. 2 | No. 32 | 18 | 100 | 000000000 | 0000 |
| 1 1/4" | Standard | 0.262" | 0.083" | No. 2 | No. 32 | 18 | 100 | 000000000 | 0000 |
| 1 1/2" | Standard | 0.262" | 0.083" | No. 2 | No. 32 | 18 | 100 | 000000000 | 0000 |
| 1 3/4" | Standard | 0.262" | 0.083" | No. 2 | No. 32 | 18 | 100 | 000000000 | 0000 |
| 2" | Standard | 0.262" | 0.083" | No. 2 | No. 32 | 18 | 100 | 000000000 | 0000 |
| 2 1/2" | Standard | 0.262" | 0.083" | No. 2 | No. 32 | 18 | 25 | 000000000 | 00000 |
| 3" | Standard | 0.262" | 0.083" | No. 2 | No. 32 | 18 | 25 | 000000000 | 00000 |
No. 8 | |||||||||
| 3/8" | Undercut | 0.312" | 0.07" | No. 2 | No. 29 | 15 | 100 | 000000000 | 0000 |
| 1/2" | Standard | 0.312" | 0.1" | No. 2 | No. 29 | 15 | 100 | 000000000 | 0000 |
| 5/8" | Standard | 0.312" | 0.1" | No. 2 | No. 29 | 15 | 100 | 000000000 | 0000 |
| 3/4" | Standard | 0.312" | 0.1" | No. 2 | No. 29 | 15 | 100 | 000000000 | 0000 |
| 7/8" | Standard | 0.312" | 0.1" | No. 2 | No. 29 | 15 | 100 | 000000000 | 0000 |
| 1" | Standard | 0.312" | 0.1" | No. 2 | No. 29 | 15 | 100 | 000000000 | 0000 |
| 1 1/4" | Standard | 0.312" | 0.1" | No. 2 | No. 29 | 15 | 100 | 000000000 | 0000 |
| 1 1/2" | Standard | 0.312" | 0.1" | No. 2 | No. 29 | 15 | 100 | 000000000 | 0000 |
| 1 3/4" | Standard | 0.312" | 0.1" | No. 2 | No. 29 | 15 | 100 | 000000000 | 00000 |
| 2" | Standard | 0.312" | 0.1" | No. 2 | No. 29 | 15 | 100 | 000000000 | 00000 |
| 2 1/2" | Standard | 0.312" | 0.1" | No. 2 | No. 29 | 15 | 100 | 000000000 | 00000 |
| 3" | Standard | 0.312" | 0.1" | No. 2 | No. 29 | 15 | 100 | 000000000 | 00000 |
No. 10 | |||||||||
| 3/8" | Undercut | 0.362" | 0.081" | No. 2 | No. 21 | 12 | 100 | 000000000 | 0000 |
| 1/2" | Undercut | 0.362" | 0.081" | No. 2 | No. 21 | 12 | 100 | 000000000 | 0000 |
| 5/8" | Standard | 0.362" | 0.116" | No. 2 | No. 21 | 12 | 100 | 000000000 | 0000 |
| 3/4" | Standard | 0.362" | 0.116" | No. 2 | No. 21 | 12 | 100 | 000000000 | 0000 |
| 7/8" | Standard | 0.362" | 0.116" | No. 2 | No. 21 | 12 | 100 | 000000000 | 00000 |
| 1" | Standard | 0.362" | 0.116" | No. 2 | No. 21 | 12 | 100 | 000000000 | 0000 |
| 1 1/4" | Standard | 0.362" | 0.116" | No. 2 | No. 21 | 12 | 100 | 000000000 | 00000 |
| 1 1/2" | Standard | 0.362" | 0.116" | No. 2 | No. 21 | 12 | 100 | 000000000 | 00000 |
| 1 3/4" | Standard | 0.362" | 0.116" | No. 2 | No. 21 | 12 | 100 | 000000000 | 00000 |
| 2" | Standard | 0.362" | 0.116" | No. 2 | No. 21 | 12 | 100 | 000000000 | 00000 |
| 2 1/4" | Standard | 0.362" | 0.116" | No. 2 | No. 21 | 12 | 100 | 000000000 | 00000 |
| 2 1/2" | Standard | 0.362" | 0.116" | No. 2 | No. 21 | 12 | 50 | 000000000 | 00000 |
| 3" | Standard | 0.362" | 0.116" | No. 2 | No. 21 | 12 | 50 | 000000000 | 00000 |
No. 12 | |||||||||
| 1/2" | Undercut | 0.412" | 0.092" | No. 3 | 3/16" | 11 | 100 | 000000000 | 0000 |
| 5/8" | Standard | 0.412" | 0.132" | No. 3 | 3/16" | 11 | 100 | 000000000 | 00000 |
| 3/4" | Standard | 0.412" | 0.132" | No. 3 | 3/16" | 11 | 100 | 000000000 | 00000 |
| 7/8" | Standard | 0.412" | 0.132" | No. 3 | 3/16" | 11 | 100 | 000000000 | 00000 |
| 1" | Standard | 0.412" | 0.132" | No. 3 | 3/16" | 11 | 100 | 000000000 | 00000 |
| 1 1/4" | Standard | 0.412" | 0.132" | No. 3 | 3/16" | 11 | 100 | 000000000 | 00000 |
| 1 1/2" | Standard | 0.412" | 0.132" | No. 3 | 3/16" | 11 | 100 | 000000000 | 00000 |
| 1 3/4" | Standard | 0.412" | 0.132" | No. 3 | 3/16" | 11 | 50 | 000000000 | 00000 |
| 2" | Standard | 0.412" | 0.132" | No. 3 | 3/16" | 11 | 50 | 000000000 | 00000 |
| 2 1/2" | Standard | 0.412" | 0.132" | No. 3 | 3/16" | 11 | 50 | 000000000 | 00000 |
| 3" | Standard | 0.412" | 0.132" | No. 3 | 3/16" | 11 | 50 | 000000000 | 00000 |
No. 14 | |||||||||
| 1/2" | Undercut | 0.462" | 0.103" | No. 3 | 5.5 mm | 10 | 25 | 000000000 | 0000 |
| 5/8" | Undercut | 0.462" | 0.103" | No. 3 | 5.5 mm | 10 | 100 | 000000000 | 00000 |
| 3/4" | Standard | 0.462" | 0.148" | No. 3 | 5.5 mm | 10 | 100 | 000000000 | 00000 |
| 7/8" | Standard | 0.462" | 0.148" | No. 3 | 5.5 mm | 10 | 50 | 000000000 | 00000 |
| 1" | Standard | 0.462" | 0.148" | No. 3 | 5.5 mm | 10 | 100 | 000000000 | 00000 |
| 1 1/4" | Standard | 0.462" | 0.148" | No. 3 | 5.5 mm | 10 | 100 | 000000000 | 00000 |
| 1 1/2" | Standard | 0.462" | 0.148" | No. 3 | 5.5 mm | 10 | 50 | 000000000 | 00000 |
| 1 3/4" | Standard | 0.462" | 0.148" | No. 3 | 5.5 mm | 10 | 50 | 000000000 | 00000 |
| 2" | Standard | 0.462" | 0.148" | No. 3 | 5.5 mm | 10 | 50 | 000000000 | 00000 |
| 2 1/2" | Standard | 0.462" | 0.148" | No. 3 | 5.5 mm | 10 | 50 | 000000000 | 00000 |
| 3" | Standard | 0.462" | 0.148" | No. 3 | 5.5 mm | 10 | 25 | 000000000 | 00000 |
Black-Oxide Steel
Head | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| Lg. | Flat Head Profile | Dia. | Ht. | Drive Size | Drill Bit Size | Approximate Threads per Inch | Pkg. Qty. | Pkg. | |
No. 4 | |||||||||
| 3/8" | Standard | 0.212" | 0.067" | No. 1 | No. 44 | 24 | 100 | 000000000 | 00000 |
| 1/2" | Standard | 0.212" | 0.067" | No. 1 | No. 44 | 24 | 100 | 000000000 | 0000 |
| 5/8" | Standard | 0.212" | 0.067" | No. 1 | No. 44 | 24 | 100 | 000000000 | 0000 |
| 3/4" | Standard | 0.212" | 0.067" | No. 1 | No. 44 | 24 | 100 | 000000000 | 0000 |
No. 6 | |||||||||
| 1/2" | Standard | 0.262" | 0.083" | No. 2 | No. 32 | 18 | 100 | 000000000 | 0000 |
| 5/8" | Standard | 0.262" | 0.083" | No. 2 | No. 32 | 18 | 100 | 000000000 | 0000 |
| 3/4" | Standard | 0.262" | 0.083" | No. 2 | No. 32 | 18 | 100 | 000000000 | 0000 |
| 1" | Standard | 0.262" | 0.083" | No. 2 | No. 32 | 18 | 100 | 000000000 | 0000 |
| 1 1/4" | Standard | 0.262" | 0.083" | No. 2 | No. 32 | 18 | 100 | 000000000 | 00000 |
| 1 1/2" | Standard | 0.262" | 0.083" | No. 2 | No. 32 | 18 | 100 | 000000000 | 00000 |
No. 8 | |||||||||
| 3/8" | Undercut | 0.312" | 0.07" | No. 2 | No. 29 | 15 | 100 | 000000000 | 00000 |
| 1/2" | Standard | 0.262" | 0.083" | No. 2 | No. 29 | 15 | 100 | 000000000 | 00000 |
| 1/2" | Standard | 0.312" | 0.1" | No. 2 | No. 29 | 15 | 100 | 000000000 | 0000 |
| 5/8" | Standard | 0.312" | 0.1" | No. 2 | No. 29 | 15 | 100 | 000000000 | 00000 |
| 3/4" | Standard | 0.312" | 0.1" | No. 2 | No. 29 | 15 | 100 | 000000000 | 0000 |
| 1" | Standard | 0.262" | 0.083" | No. 2 | No. 29 | 15 | 100 | 000000000 | 00000 |
| 1" | Standard | 0.312" | 0.1" | No. 2 | No. 29 | 15 | 100 | 000000000 | 00000 |
| 1 1/4" | Standard | 0.312" | 0.1" | No. 2 | No. 29 | 15 | 100 | 000000000 | 00000 |
| 1 1/2" | Standard | 0.262" | 0.083" | No. 2 | No. 29 | 15 | 100 | 000000000 | 00000 |
| 1 1/2" | Standard | 0.312" | 0.1" | No. 2 | No. 29 | 15 | 100 | 000000000 | 00000 |
| 2" | Standard | 0.312" | 0.1" | No. 2 | No. 29 | 15 | 50 | 000000000 | 00000 |
| 2 1/2" | Standard | 0.312" | 0.1" | No. 2 | No. 29 | 15 | 25 | 000000000 | 00000 |
No. 10 | |||||||||
| 1/2" | Undercut | 0.362" | 0.081" | No. 2 | No. 21 | 12 | 100 | 000000000 | 00000 |
| 3/4" | Standard | 0.362" | 0.116" | No. 2 | No. 21 | 12 | 100 | 000000000 | 00000 |
| 1" | Standard | 0.362" | 0.116" | No. 2 | No. 21 | 12 | 100 | 000000000 | 00000 |
| 1 1/4" | Standard | 0.362" | 0.116" | No. 2 | No. 21 | 12 | 50 | 000000000 | 00000 |
| 1 1/2" | Standard | 0.362" | 0.116" | No. 2 | No. 21 | 12 | 50 | 000000000 | 00000 |
| 2" | Standard | 0.362" | 0.116" | No. 2 | No. 21 | 12 | 25 | 000000000 | 00000 |
| 2 1/2" | Standard | 0.362" | 0.116" | No. 2 | No. 21 | 12 | 25 | 000000000 | 00000 |
| 3" | Standard | 0.362" | 0.116" | No. 2 | No. 21 | 12 | 25 | 000000000 | 00000 |
No. 12 | |||||||||
| 3/4" | Standard | 0.412" | 0.132" | No. 3 | 3/16" | 14 | 50 | 000000000 | 00000 |
| 1" | Standard | 0.412" | 0.132" | No. 3 | 3/16" | 14 | 50 | 000000000 | 00000 |
| 1 1/4" | Standard | 0.412" | 0.132" | No. 3 | 3/16" | 14 | 50 | 000000000 | 00000 |
| 1 1/2" | Standard | 0.412" | 0.132" | No. 3 | 3/16" | 14 | 25 | 000000000 | 00000 |
18-8 Stainless Steel Phillips Flat Head Screws for Sheet Metal
18-8 stainless steel screws have good chemical resistance and may be mildly magnetic. They're beveled under the head for use in countersunk holes. Screws penetrate 0.025" and thinner sheet metal. Length is measured from the top of the head.
Undercut screws allow for more threading.
For technical drawings and 3-D models, click on a part number.
18-8 Stainless Steel—Inch
Undercut Flat Head
Standard Flat Head
Head | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| Lg. | Flat Head Profile | Dia. | Ht. | Drive Size | Drill Bit Size | Approximate Threads per Inch | Pkg. Qty. | Pkg. | |
No. 0 | |||||||||
| 1/8" | Undercut | 0.112" | 0.025" | No. 0 | No. 55 | 48 | 50 | 000000000 | 00000 |
| 3/16" | Undercut | 0.112" | 0.025" | No. 0 | No. 55 | 48 | 50 | 000000000 | 0000 |
| 1/4" | Standard | 0.112" | 0.035" | No. 0 | No. 55 | 48 | 10 | 000000000 | 0000 |
| 5/16" | Standard | 0.112" | 0.035" | No. 0 | No. 55 | 48 | 50 | 000000000 | 0000 |
| 3/8" | Standard | 0.112" | 0.035" | No. 0 | No. 55 | 48 | 10 | 000000000 | 0000 |
| 1/2" | Standard | 0.112" | 0.035" | No. 0 | No. 55 | 48 | 10 | 000000000 | 0000 |
No. 1 | |||||||||
| 1/8" | Undercut | 0.137" | 0.031" | No. 0 | No. 52 | 42 | 50 | 000000000 | 0000 |
| 3/16" | Undercut | 0.137" | 0.031" | No. 0 | No. 52 | 42 | 50 | 000000000 | 0000 |
| 1/4" | Standard | 0.137" | 0.043" | No. 0 | No. 52 | 42 | 10 | 000000000 | 0000 |
| 5/16" | Standard | 0.137" | 0.043" | No. 0 | No. 52 | 42 | 50 | 000000000 | 0000 |
| 3/8" | Standard | 0.137" | 0.043" | No. 0 | No. 52 | 42 | 10 | 000000000 | 0000 |
| 1/2" | Standard | 0.137" | 0.043" | No. 0 | No. 52 | 42 | 10 | 000000000 | 0000 |
No. 2 | |||||||||
| 1/8" | Undercut | 0.162" | 0.036" | No. 1 | No. 48 | 32 | 50 | 000000000 | 0000 |
| 3/16" | Undercut | 0.162" | 0.036" | No. 1 | No. 48 | 32 | 50 | 000000000 | 0000 |
| 1/4" | Standard | 0.162" | 0.051" | No. 1 | No. 48 | 32 | 100 | 000000000 | 0000 |
| 5/16" | Standard | 0.162" | 0.051" | No. 1 | No. 48 | 32 | 50 | 000000000 | 0000 |
| 3/8" | Standard | 0.162" | 0.051" | No. 1 | No. 48 | 32 | 100 | 000000000 | 0000 |
| 1/2" | Standard | 0.162" | 0.051" | No. 1 | No. 48 | 32 | 100 | 000000000 | 0000 |
No. 4 | |||||||||
| 1/4" | Undercut | 0.212" | 0.047" | No. 1 | No. 44 | 24 | 100 | 000000000 | 0000 |
| 5/16" | Standard | 0.212" | 0.067" | No. 1 | No. 44 | 24 | 100 | 000000000 | 0000 |
| 3/8" | Standard | 0.212" | 0.067" | No. 1 | No. 44 | 24 | 100 | 000000000 | 0000 |
| 1/2" | Standard | 0.212" | 0.067" | No. 1 | No. 44 | 24 | 100 | 000000000 | 0000 |
| 5/8" | Standard | 0.212" | 0.067" | No. 1 | No. 44 | 24 | 100 | 000000000 | 0000 |
| 3/4" | Standard | 0.212" | 0.067" | No. 1 | No. 44 | 24 | 100 | 000000000 | 0000 |
| 7/8" | Standard | 0.212" | 0.067" | No. 1 | No. 44 | 24 | 50 | 000000000 | 00000 |
| 1" | Standard | 0.212" | 0.067" | No. 1 | No. 44 | 24 | 100 | 000000000 | 0000 |
| 1 1/4" | Standard | 0.212" | 0.067" | No. 1 | No. 44 | 24 | 50 | 000000000 | 0000 |
| 1 1/2" | Standard | 0.212" | 0.067" | No. 1 | No. 44 | 24 | 50 | 000000000 | 0000 |
No. 5 | |||||||||
| 1/2" | Standard | 0.237" | 0.075" | No. 2 | No. 36 | 20 | 10 | 000000000 | 0000 |
| 5/8" | Standard | 0.237" | 0.075" | No. 2 | No. 36 | 20 | 10 | 000000000 | 0000 |
| 3/4" | Standard | 0.237" | 0.075" | No. 2 | No. 36 | 20 | 10 | 000000000 | 0000 |
No. 6 | |||||||||
| 1/4" | Undercut | 0.262" | 0.059" | No. 2 | No. 32 | 20 | 100 | 000000000 | 0000 |
| 3/8" | Standard | 0.262" | 0.083" | No. 2 | No. 32 | 18 | 100 | 000000000 | 0000 |
| 3/8" | Undercut | 0.262" | 0.058" | No. 2 | No. 32 | 18 | 100 | 000000000 | 0000 |
| 1/2" | Standard | 0.262" | 0.083" | No. 2 | No. 32 | 18 | 100 | 000000000 | 0000 |
| 1/2" | Undercut | 0.262" | 0.058" | No. 2 | No. 32 | 18 | 100 | 000000000 | 0000 |
| 5/8" | Standard | 0.262" | 0.083" | No. 2 | No. 32 | 18 | 100 | 000000000 | 0000 |
| 5/8" | Undercut | 0.262" | 0.058" | No. 2 | No. 32 | 18 | 100 | 000000000 | 0000 |
| 3/4" | Standard | 0.262" | 0.083" | No. 2 | No. 32 | 18 | 100 | 000000000 | 0000 |
| 3/4" | Undercut | 0.262" | 0.058" | No. 2 | No. 32 | 18 | 100 | 000000000 | 0000 |
| 7/8" | Standard | 0.262" | 0.083" | No. 2 | No. 32 | 18 | 100 | 000000000 | 0000 |
| 1" | Standard | 0.262" | 0.083" | No. 2 | No. 32 | 18 | 100 | 000000000 | 0000 |
| 1 1/4" | Standard | 0.262" | 0.083" | No. 2 | No. 32 | 18 | 100 | 000000000 | 0000 |
| 1 1/2" | Standard | 0.262" | 0.083" | No. 2 | No. 32 | 18 | 100 | 000000000 | 00000 |
| 1 3/4" | Standard | 0.262" | 0.083" | No. 2 | No. 32 | 18 | 100 | 000000000 | 00000 |
| 2" | Standard | 0.262" | 0.083" | No. 2 | No. 32 | 18 | 100 | 000000000 | 00000 |
| 2 1/2" | Standard | 0.262" | 0.083" | No. 2 | No. 32 | 18 | 50 | 000000000 | 0000 |
No. 7 | |||||||||
| 5/8" | Standard | 0.287" | 0.091" | No. 2 | No. 30 | 16 | 50 | 000000000 | 0000 |
No. 8 | |||||||||
| 3/8" | Undercut | 0.312" | 0.07" | No. 2 | No. 29 | 18 | 100 | 000000000 | 00000 |
| 1/2" | Standard | 0.312" | 0.1" | No. 2 | No. 29 | 15 | 100 | 000000000 | 0000 |
| 1/2" | Undercut | 0.312" | 0.07" | No. 2 | No. 29 | 15 | 100 | 000000000 | 0000 |
| 5/8" | Standard | 0.312" | 0.1" | No. 2 | No. 29 | 15 | 100 | 000000000 | 0000 |
| 5/8" | Undercut | 0.312" | 0.07" | No. 2 | No. 29 | 15 | 100 | 000000000 | 00000 |
| 3/4" | Standard | 0.312" | 0.1" | No. 2 | No. 29 | 15 | 100 | 000000000 | 0000 |
| 3/4" | Undercut | 0.312" | 0.07" | No. 2 | No. 29 | 15 | 100 | 000000000 | 00000 |
| 7/8" | Standard | 0.312" | 0.1" | No. 2 | No. 29 | 15 | 100 | 000000000 | 0000 |
| 1" | Standard | 0.312" | 0.1" | No. 2 | No. 29 | 15 | 100 | 000000000 | 0000 |
| 1" | Undercut | 0.312" | 0.07" | No. 2 | No. 29 | 15 | 100 | 000000000 | 00000 |
| 1 1/4" | Standard | 0.312" | 0.1" | No. 2 | No. 29 | 15 | 100 | 000000000 | 00000 |
| 1 1/2" | Standard | 0.312" | 0.1" | No. 2 | No. 29 | 15 | 100 | 000000000 | 00000 |
| 1 3/4" | Standard | 0.312" | 0.1" | No. 2 | No. 29 | 15 | 50 | 000000000 | 0000 |
| 2" | Standard | 0.312" | 0.1" | No. 2 | No. 29 | 15 | 100 | 000000000 | 00000 |
| 2 1/4" | Standard | 0.312" | 0.1" | No. 2 | No. 29 | 15 | 25 | 000000000 | 00000 |
| 2 1/2" | Standard | 0.312" | 0.1" | No. 2 | No. 29 | 15 | 100 | 000000000 | 00000 |
| 3" | Standard | 0.312" | 0.1" | No. 2 | No. 29 | 15 | 50 | 000000000 | 00000 |
| 3 1/2" | Standard | 0.312" | 0.1" | No. 2 | No. 29 | 15 | 50 | 000000000 | 00000 |
No. 10 | |||||||||
| 3/8" | Undercut | 0.362" | 0.081" | No. 2 | No. 21 | 16 | 100 | 000000000 | 0000 |
| 1/2" | Undercut | 0.362" | 0.081" | No. 2 | No. 21 | 12 | 100 | 000000000 | 0000 |
| 5/8" | Standard | 0.362" | 0.116" | No. 2 | No. 21 | 12 | 100 | 000000000 | 0000 |
| 5/8" | Undercut | 0.362" | 0.081" | No. 2 | No. 21 | 12 | 100 | 000000000 | 00000 |
| 3/4" | Standard | 0.362" | 0.116" | No. 2 | No. 21 | 12 | 100 | 000000000 | 00000 |
| 3/4" | Undercut | 0.362" | 0.081" | No. 2 | No. 21 | 12 | 100 | 000000000 | 00000 |
| 7/8" | Standard | 0.362" | 0.116" | No. 2 | No. 21 | 12 | 100 | 000000000 | 0000 |
| 1" | Standard | 0.362" | 0.116" | No. 2 | No. 21 | 12 | 100 | 000000000 | 00000 |
| 1" | Undercut | 0.362" | 0.081" | No. 2 | No. 21 | 12 | 50 | 000000000 | 00000 |
| 1 1/4" | Standard | 0.362" | 0.116" | No. 2 | No. 21 | 12 | 100 | 000000000 | 00000 |
| 1 1/2" | Standard | 0.362" | 0.116" | No. 2 | No. 21 | 12 | 100 | 000000000 | 00000 |
| 1 3/4" | Standard | 0.362" | 0.116" | No. 2 | No. 21 | 12 | 50 | 000000000 | 00000 |
| 2" | Standard | 0.362" | 0.116" | No. 2 | No. 21 | 12 | 50 | 000000000 | 00000 |
| 2 1/4" | Standard | 0.362" | 0.116" | No. 2 | No. 21 | 12 | 25 | 000000000 | 00000 |
| 2 1/2" | Standard | 0.362" | 0.116" | No. 2 | No. 21 | 12 | 50 | 000000000 | 00000 |
| 3" | Standard | 0.362" | 0.116" | No. 2 | No. 21 | 12 | 50 | 000000000 | 00000 |
| 3 1/2" | Standard | 0.362" | 0.116" | No. 2 | No. 21 | 12 | 25 | 000000000 | 0000 |
| 4" | Standard | 0.362" | 0.116" | No. 2 | No. 21 | 12 | 25 | 000000000 | 00000 |
No. 12 | |||||||||
| 1/2" | Undercut | 0.412" | 0.092" | No. 3 | 3/16" | 11 | 100 | 000000000 | 00000 |
| 5/8" | Standard | 0.412" | 0.092" | No. 3 | 3/16" | 11 | 100 | 000000000 | 00000 |
| 3/4" | Standard | 0.412" | 0.132" | No. 3 | 3/16" | 11 | 100 | 000000000 | 00000 |
| 3/4" | Undercut | 0.412" | 0.092" | No. 3 | 3/16" | 11 | 50 | 000000000 | 0000 |
| 1" | Standard | 0.412" | 0.132" | No. 3 | 3/16" | 11 | 100 | 000000000 | 00000 |
| 1 1/4" | Standard | 0.412" | 0.132" | No. 3 | 3/16" | 11 | 50 | 000000000 | 00000 |
| 1 1/2" | Standard | 0.412" | 0.132" | No. 3 | 3/16" | 11 | 50 | 000000000 | 00000 |
| 1 3/4" | Standard | 0.412" | 0.132" | No. 3 | 3/16" | 11 | 50 | 000000000 | 00000 |
| 2" | Standard | 0.412" | 0.132" | No. 3 | 3/16" | 11 | 50 | 000000000 | 00000 |
| 2 1/4" | Standard | 0.412" | 0.132" | No. 3 | 3/16" | 11 | 10 | 000000000 | 0000 |
| 2 1/2" | Standard | 0.412" | 0.132" | No. 3 | 3/16" | 11 | 50 | 000000000 | 00000 |
| 3" | Standard | 0.412" | 0.132" | No. 3 | 3/16" | 11 | 50 | 000000000 | 00000 |
| 3 1/2" | Standard | 0.412" | 0.132" | No. 3 | 3/16" | 11 | 25 | 000000000 | 00000 |
| 4" | Standard | 0.412" | 0.132" | No. 3 | 3/16" | 11 | 25 | 000000000 | 00000 |
No. 14 | |||||||||
| 1/2" | Undercut | 0.462" | 0.103" | No. 3 | 5.5 mm | 14 | 50 | 000000000 | 0000 |
| 5/8" | Undercut | 0.462" | 0.103" | No. 3 | 5.5 mm | 10 | 50 | 000000000 | 0000 |
| 3/4" | Standard | 0.462" | 0.148" | No. 3 | 5.5 mm | 10 | 50 | 000000000 | 00000 |
| 3/4" | Undercut | 0.462" | 0.103" | No. 3 | 5.5 mm | 10 | 50 | 000000000 | 00000 |
| 1" | Standard | 0.462" | 0.148" | No. 3 | 5.5 mm | 10 | 50 | 000000000 | 00000 |
| 1 1/4" | Standard | 0.462" | 0.148" | No. 3 | 5.5 mm | 10 | 50 | 000000000 | 00000 |
| 1 1/2" | Standard | 0.462" | 0.148" | No. 3 | 5.5 mm | 10 | 25 | 000000000 | 0000 |
| 1 3/4" | Standard | 0.462" | 0.148" | No. 3 | 5.5 mm | 10 | 25 | 000000000 | 0000 |
| 2" | Standard | 0.462" | 0.148" | No. 3 | 5.5 mm | 10 | 25 | 000000000 | 00000 |
| 2 1/4" | Standard | 0.462" | 0.148" | No. 3 | 5.5 mm | 10 | 10 | 000000000 | 00000 |
| 2 1/2" | Standard | 0.462" | 0.148" | No. 3 | 5.5 mm | 10 | 25 | 000000000 | 00000 |
| 3" | Standard | 0.462" | 0.148" | No. 3 | 5.5 mm | 10 | 25 | 000000000 | 00000 |
| 3 1/2" | Standard | 0.462" | 0.148" | No. 3 | 5.5 mm | 10 | 10 | 000000000 | 0000 |
| 4" | Standard | 0.462" | 0.148" | No. 3 | 5.5 mm | 10 | 10 | 000000000 | 0000 |
| 5" | Standard | 0.462" | 0.148" | No. 3 | 5.5 mm | 10 | 10 | 000000000 | 00000 |
| 6" | Standard | 0.462" | 0.148" | No. 3 | 5.5 mm | 10 | 5 | 000000000 | 00000 |
Super-Corrosion-Resistant 316 Stainless Steel
Phillips Flat Head Screws for Sheet Metal
Standard Flat Head
Undercut Flat Head
More corrosion resistant than 18-8 stainless steel screws, these have excellent resistance to chemicals and salt water and may be mildly magnetic. They're beveled under the head for use in countersunk holes. Screws penetrate 0.025" and thinner sheet metal. Length is measured from the top of the head.
Undercut screws allow for more threading.
Head | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| Lg. | Flat Head Profile | Dia. | Ht. | Drive Size | Drill Bit Size | Approximate Threads per Inch | Pkg. Qty. | Pkg. | |
316 Stainless Steel | |||||||||
No. 2 | |||||||||
| 1/4" | Standard | 0.162" | 0.051" | No. 1 | No. 48 | 32 | 100 | 000000000 | 00000 |
| 3/8" | Standard | 0.162" | 0.051" | No. 1 | No. 48 | 32 | 100 | 000000000 | 0000 |
| 1/2" | Standard | 0.162" | 0.051" | No. 1 | No. 48 | 32 | 100 | 000000000 | 0000 |
No. 4 | |||||||||
| 1/4" | Undercut | 0.212" | 0.047" | No. 1 | No. 44 | 24 | 100 | 000000000 | 0000 |
| 3/8" | Undercut | 0.212" | 0.047" | No. 1 | No. 44 | 24 | 100 | 000000000 | 0000 |
| 1/2" | Standard | 0.212" | 0.067" | No. 1 | No. 44 | 24 | 100 | 000000000 | 0000 |
| 5/8" | Standard | 0.212" | 0.067" | No. 1 | No. 44 | 24 | 100 | 000000000 | 0000 |
| 3/4" | Standard | 0.212" | 0.067" | No. 1 | No. 44 | 24 | 100 | 000000000 | 0000 |
| 1" | Standard | 0.212" | 0.067" | No. 1 | No. 44 | 24 | 100 | 000000000 | 00000 |
No. 6 | |||||||||
| 1/4" | Undercut | 0.262" | 0.059" | No. 2 | No. 32 | 18 | 100 | 000000000 | 0000 |
| 3/8" | Undercut | 0.262" | 0.059" | No. 2 | No. 32 | 18 | 100 | 000000000 | 0000 |
| 1/2" | Standard | 0.262" | 0.083" | No. 2 | No. 32 | 18 | 100 | 000000000 | 0000 |
| 5/8" | Standard | 0.262" | 0.083" | No. 2 | No. 32 | 18 | 100 | 000000000 | 0000 |
| 3/4" | Standard | 0.262" | 0.083" | No. 2 | No. 32 | 18 | 100 | 000000000 | 00000 |
| 1" | Standard | 0.262" | 0.083" | No. 2 | No. 32 | 18 | 100 | 000000000 | 00000 |
| 1 1/4" | Standard | 0.262" | 0.083" | No. 2 | No. 32 | 18 | 50 | 000000000 | 0000 |
| 1 1/2" | Standard | 0.262" | 0.083" | No. 2 | No. 32 | 18 | 50 | 000000000 | 0000 |
| 2" | Standard | 0.262" | 0.083" | No. 2 | No. 32 | 18 | 50 | 000000000 | 00000 |
No. 8 | |||||||||
| 3/8" | Undercut | 0.312" | 0.07" | No. 2 | No. 29 | 15 | 100 | 000000000 | 0000 |
| 1/2" | Standard | 0.312" | 0.1" | No. 2 | No. 29 | 15 | 100 | 000000000 | 00000 |
| 5/8" | Standard | 0.312" | 0.1" | No. 2 | No. 29 | 15 | 100 | 000000000 | 00000 |
| 3/4" | Standard | 0.312" | 0.1" | No. 2 | No. 29 | 15 | 100 | 000000000 | 00000 |
| 7/8" | Standard | 0.312" | 0.1" | No. 2 | No. 29 | 15 | 100 | 000000000 | 00000 |
| 1" | Standard | 0.312" | 0.1" | No. 2 | No. 29 | 15 | 50 | 000000000 | 0000 |
| 1 1/4" | Standard | 0.312" | 0.1" | No. 2 | No. 29 | 15 | 50 | 000000000 | 00000 |
| 1 1/2" | Standard | 0.312" | 0.1" | No. 2 | No. 29 | 15 | 50 | 000000000 | 00000 |
| 1 3/4" | Standard | 0.312" | 0.1" | No. 2 | No. 29 | 15 | 25 | 000000000 | 0000 |
| 2" | Standard | 0.312" | 0.1" | No. 2 | No. 29 | 15 | 25 | 000000000 | 0000 |
| 2 1/2" | Standard | 0.312" | 0.1" | No. 2 | No. 29 | 15 | 25 | 000000000 | 00000 |
| 3" | Standard | 0.312" | 0.1" | No. 2 | No. 29 | 15 | 25 | 000000000 | 00000 |
No. 10 | |||||||||
| 1/2" | Undercut | 0.362" | 0.081" | No. 2 | No. 21 | 12 | 50 | 000000000 | 0000 |
| 5/8" | Undercut | 0.362" | 0.081" | No. 2 | No. 21 | 12 | 50 | 000000000 | 0000 |
| 3/4" | Standard | 0.362" | 0.116" | No. 2 | No. 21 | 12 | 50 | 000000000 | 00000 |
| 1" | Standard | 0.362" | 0.116" | No. 2 | No. 21 | 12 | 50 | 000000000 | 00000 |
| 1 1/4" | Standard | 0.362" | 0.116" | No. 2 | No. 21 | 12 | 25 | 000000000 | 0000 |
| 1 1/2" | Standard | 0.362" | 0.116" | No. 2 | No. 21 | 12 | 25 | 000000000 | 0000 |
| 1 3/4" | Standard | 0.362" | 0.116" | No. 2 | No. 21 | 12 | 25 | 000000000 | 00000 |
| 2" | Standard | 0.362" | 0.116" | No. 2 | No. 21 | 12 | 25 | 000000000 | 00000 |
| 2 1/2" | Standard | 0.362" | 0.116" | No. 2 | No. 21 | 12 | 25 | 000000000 | 00000 |
| 3" | Standard | 0.362" | 0.116" | No. 2 | No. 21 | 12 | 10 | 000000000 | 0000 |
No. 12 | |||||||||
| 3/4" | Standard | 0.412" | 0.132" | No. 3 | 3/16" | 11 | 25 | 000000000 | 0000 |
| 1" | Standard | 0.412" | 0.132" | No. 3 | 3/16" | 11 | 25 | 000000000 | 0000 |
| 1 1/4" | Standard | 0.412" | 0.132" | No. 3 | 3/16" | 11 | 25 | 000000000 | 0000 |
| 1 1/2" | Standard | 0.412" | 0.132" | No. 3 | 3/16" | 11 | 10 | 000000000 | 0000 |
| 2" | Standard | 0.412" | 0.132" | No. 3 | 3/16" | 11 | 10 | 000000000 | 0000 |
| 2 1/2" | Standard | 0.412" | 0.132" | No. 3 | 3/16" | 11 | 10 | 000000000 | 0000 |
| 3" | Standard | 0.412" | 0.132" | No. 3 | 3/16" | 11 | 10 | 000000000 | 0000 |
No. 14 | |||||||||
| 3/4" | Standard | 0.462" | 0.148" | No. 3 | 5.5 mm | 10 | 25 | 000000000 | 0000 |
| 1" | Standard | 0.462" | 0.148" | No. 3 | 5.5 mm | 10 | 10 | 000000000 | 0000 |
| 1 1/4" | Standard | 0.462" | 0.148" | No. 3 | 5.5 mm | 10 | 10 | 000000000 | 0000 |
| 1 1/2" | Standard | 0.462" | 0.148" | No. 3 | 5.5 mm | 10 | 10 | 000000000 | 0000 |
| 2" | Standard | 0.462" | 0.148" | No. 3 | 5.5 mm | 10 | 10 | 000000000 | 0000 |
| 2 1/2" | Standard | 0.462" | 0.148" | No. 3 | 5.5 mm | 10 | 10 | 000000000 | 0000 |
High-Strength 410 Stainless Steel Phillips Flat Head Screws for Sheet Metal
Stronger and more wear resistant than 18-8 and 316 stainless steel, these screws are magnetic and mildly chemical resistant. They're not for use with aluminum sheet metal. All are beveled under the head for use in countersunk holes. Screws penetrate 0.025" and thinner sheet metal. Length is measured from the top of the head.
Head | ||||||||
|---|---|---|---|---|---|---|---|---|
| Lg. | Dia. | Ht. | Drive Size | Drill Bit Size | Approximate Threads per Inch | Pkg. Qty. | Pkg. | |
410 Stainless Steel | ||||||||
No. 6 | ||||||||
| 1/2" | 0.262" | 0.083" | No. 2 | No. 32 | 18 | 100 | 000000000 | 00000 |
| 3/4" | 0.262" | 0.083" | No. 2 | No. 32 | 18 | 100 | 000000000 | 0000 |
No. 8 | ||||||||
| 1/2" | 0.312" | 0.1" | No. 2 | No. 29 | 15 | 100 | 000000000 | 0000 |
| 5/8" | 0.312" | 0.1" | No. 2 | No. 29 | 15 | 100 | 000000000 | 0000 |
| 3/4" | 0.312" | 0.1" | No. 2 | No. 29 | 15 | 100 | 000000000 | 0000 |
| 1" | 0.312" | 0.1" | No. 2 | No. 29 | 15 | 100 | 000000000 | 00000 |
No. 10 | ||||||||
| 3/4" | 0.362" | 0.116" | No. 2 | No. 21 | 12 | 100 | 000000000 | 00000 |
| 1" | 0.362" | 0.116" | No. 2 | No. 21 | 12 | 100 | 000000000 | 00000 |
Hinge Screws
Commonly used with door hinge hardware, these screws cut threads in soft material such as aluminum and brass. They're beveled under the head for use in countersunk holes. They are undercut to allow more threading. Screws cut threads in drilled holes as they’re turned, so they require less driving torque and cause less stress on your material than thread forming screws. Length is measured from the top of the head.
Zinc-plated steel screws resist corrosion in wet environments.
Brass, bronze, and chrome-plated steel screws have a bright and attractive finish. They're corrosion resistant in wet environments.
Head | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Material | Thread Size | Lg. | Dia. | Ht. | Drive Size | Drill Bit Size | Tapping Screw Type | For Use In | Pkg. Qty. | Pkg. | |
| Brass-Plated Steel | 12-24 | 1/2" | 0.412" | 0.092" | No. 3 | No. 8 | F | Aluminum, Brass, Sheet Metal | 10 | 000000000 | 00000 |
| Bronze-Plated Steel | 12-24 | 1/2" | 0.412" | 0.092" | No. 3 | No. 8 | F | Aluminum, Brass, Sheet Metal | 25 | 000000000 | 00000 |
| Chrome-Plated Steel | 12-24 | 1/2" | 0.412" | 0.092" | No. 3 | No. 8 | F | Aluminum, Brass, Sheet Metal | 25 | 000000000 | 00000 |
| Zinc-Plated Steel | 12-24 | 1/2" | 0.412" | 0.092" | No. 3 | No. 8 | F | Aluminum, Brass, Sheet Metal | 25 | 000000000 | 0000 |