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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 | 00000 |
| 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" | Undercut | 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.
For technical drawings and 3-D models, click on a part number.
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 | 00000 |
| 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 | 00000 |
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.
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. | |
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 |
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. For technical drawings and 3-D models, click on a part number.
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 | 00000 |
| 3/8" | Standard | 0.162" | 0.051" | No. 1 | No. 48 | 32 | 50 | 000000000 | 00000 |
| 1/2" | Standard | 0.162" | 0.051" | No. 1 | No. 48 | 32 | 50 | 000000000 | 00000 |
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 | 00000 |
| 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 | 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 | 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 |
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.
For technical drawings and 3-D models, click on a part number.
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 |