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Socket Cap Screws

Socket Cap Screws

These screws don't require side clearance for a wrench, so they're good for tight spots. Install them with a hex key. The screw head sits atop the fastened material or can be sunk into a counterbored hole.

Standard

Black Oxide Alloy Steel

5-44

0-80

1-72

2-56

3-48

3-56

4-40

4-48

5-40

6-32

6-40

8-32

8-36

10-24

10-32

12-24

1/4"-20

1/4"-28

5/16"-18

5/16"-24

3/8"-16

3/8"-24

7/16"-14

7/16"-20

1/2"-13

1/2"-20

9/16"-12

9/16"-18

5/8"-11

5/8"-18

3/4"-10

3/4"-16

7/8"-9

7/8"-14

1"-8

1"-14

1 1/8"-7

1 1/4"-7

1 1/4"-12

1 3/8"-6

1 1/2"-6

1 1/2"-12

1 3/4"-5

2"-4 1/2

M3, 0.5 mm Thread Pitch

M4, 0.7 mm Thread Pitch

M5, 0.8 mm Thread Pitch

M6, 1 mm Thread Pitch

M8, 1.25 mm Thread Pitch

M10, 1.5 mm Thread Pitch

M12, 1.75 mm Thread Pitch

M16, 2 mm Thread Pitch

M20, 0.5 mm Thread Pitch

M20, 2.5 mm Thread Pitch

M24, 3 mm Thread Pitch

Zinc Plated Alloy Steel

3-48

4-40

6-32

8-32

10-24

10-32

1/4"-20

1/4"-28

5/16"-18

3/8"-16

1/2"-13

5/8"-11

3/4"-10

Zinc Flake Coated Alloy Steel

6-32

8-32

10-24

1/4"-20

5/16"-18

3/8"-16

7/16"-14

1/2"-13

Blue Phosphate Alloy Steel

M4, 0.7 mm Thread Pitch

M6, 1 mm Thread Pitch

M8, 1.25 mm Thread Pitch

M24, 3 mm Thread Pitch

Chrome Plated Alloy Steel

1/4"-20

1/4"-28

5/16"-24

3/8"-16

3/8"-24

Zinc Plated Class 8.8 Alloy Steel

M3, 0.5 mm Thread Pitch

M4, 0.7 mm Thread Pitch

M5, 0.8 mm Thread Pitch

M6, 1 mm Thread Pitch

M8, 1.25 mm Thread Pitch

M10, 1.5 mm Thread Pitch

M12, 1.75 mm Thread Pitch

M16, 2 mm Thread Pitch

Black Oxide Class 12.9 Alloy Steel

M2, 0.45 mm Thread Pitch

M2.5, 0.45 mm Thread Pitch

M1.6, 0.35 mm Thread Pitch

M2, 0.4 mm Thread Pitch

M3, 0.5 mm Thread Pitch

M4, 0.7 mm Thread Pitch

M5, 0.8 mm Thread Pitch

M6, 1 mm Thread Pitch

M8, 1.25 mm Thread Pitch

M10, 1.5 mm Thread Pitch

M12, 1.75 mm Thread Pitch

M14, 2 mm Thread Pitch

M16, 2 mm Thread Pitch

M18, 2.5 mm Thread Pitch

M20, 2.5 mm Thread Pitch

M22, 2.5 mm Thread Pitch

M24, 3 mm Thread Pitch

M27, 3 mm Thread Pitch

M30, 3.5 mm Thread Pitch

M36, 4 mm Thread Pitch

Zinc Plated Class 12.9 Alloy Steel

M3, 0.5 mm Thread Pitch

M4, 0.7 mm Thread Pitch

M5, 0.8 mm Thread Pitch

M6, 1 mm Thread Pitch

M8, 1.25 mm Thread Pitch

M10, 1.5 mm Thread Pitch

M12, 1.75 mm Thread Pitch

M14, 2 mm Thread Pitch

M16, 2 mm Thread Pitch

Blue Phosphate Class 12.9 Alloy Steel

M3, 0.5 mm Thread Pitch

M4, 0.7 mm Thread Pitch

M5, 0.8 mm Thread Pitch

M6, 1 mm Thread Pitch

M8, 1.25 mm Thread Pitch

M10, 1.5 mm Thread Pitch

M12, 1.75 mm Thread Pitch

M16, 2 mm Thread Pitch

M20, 0.5 mm Thread Pitch

M20, 2.5 mm Thread Pitch

18-8 Stainless Steel

M2.5, 0.45 mm Thread Pitch

0-80

1-64

1-72

2-56

3-48

3-56

4-40

4-48

5-40

6-32

6-40

8-32

8-36

10-24

10-32

12-24

1/4"-20

1/4"-28

5/16"-18

5/16"-24

3/8"-16

3/8"-24

7/16"-14

7/16"-20

1/2"-13

1/2"-20

5/8"-11

5/8"-18

3/4"-10

1"-8

M2, 0.4 mm Thread Pitch

M3, 0.5 mm Thread Pitch

M4, 0.7 mm Thread Pitch

M5, 0.8 mm Thread Pitch

M6, 1 mm Thread Pitch

M8, 1.25 mm Thread Pitch

M10, 1.5 mm Thread Pitch

M12, 1.75 mm Thread Pitch

M14, 2 mm Thread Pitch

M16, 2 mm Thread Pitch

M20, 2.5 mm Thread Pitch

316 Stainless Steel

M2.5, 0.45 mm Thread Pitch

2-56

4-40

6-32

8-32

10-24

10-32

1/4"-20

1/4"-28

5/16"-18

5/16"-24

3/8"-16

7/16"-14

1/2"-13

5/8"-11

3/4"-10

M2, 0.4 mm Thread Pitch

M3, 0.5 mm Thread Pitch

M4, 0.7 mm Thread Pitch

M5, 0.8 mm Thread Pitch

M6, 1 mm Thread Pitch

M8, 1.25 mm Thread Pitch

M10, 1.5 mm Thread Pitch

M12, 1.75 mm Thread Pitch

M16, 2 mm Thread Pitch

Passivated A286 Stainless Steel

2-56

4-40

6-32

8-32

10-32

1/4"-20

Nylon

4-40

6-32

8-32

10-24

10-32

1/4"-20

1/4"-28

5/16"-18

3/8"-16

1/2"-13

5/8"-11

Flat

Countersink these flat head screws to sit flush with surfaces. They're less visible than other head styles since they don't stick out from the material surface.

Black Oxide Alloy Steel

0-80

1-72

3-48

4-40

4-48

5-40

6-32

6-40

8-32

8-36

10-24

10-32

1/4"-20

1/4"-28

5/16"-18

5/16"-24

3/8"-16

3/8"-24

7/16"-14

7/16"-20

1/2"-13

1/2"-20

5/8"-11

5/8"-18

3/4"-10

3/4"-16

7/8"-9

1"-8

1 1/4"-7

M8, 1.25 mm Thread Pitch

M16, 2 mm Thread Pitch

Zinc Plated Alloy Steel

6-32

8-32

10-24

10-32

1/4"-20

1/4"-28

5/16"-18

5/16"-24

3/8"-16

1/2"-13

5/8"-11

Chrome Plated Grade 8 Alloy Steel

8-32

10-32

1/4"-20

5/16"-18

Blue Phosphate Alloy Steel

M3, 0.5 mm Thread Pitch

M4, 0.7 mm Thread Pitch

M5, 0.8 mm Thread Pitch

M6, 1 mm Thread Pitch

M8, 1.25 mm Thread Pitch

M10, 1.5 mm Thread Pitch

M12, 1.75 mm Thread Pitch

Zinc Plated Class 8.8 Alloy Steel

M3, 0.5 mm Thread Pitch

M4, 0.7 mm Thread Pitch

M5, 0.8 mm Thread Pitch

M6, 1 mm Thread Pitch

M8, 1.25 mm Thread Pitch

M10, 1.5 mm Thread Pitch

Black Oxide Class 10.9 Alloy Steel

M2, 0.4 mm Thread Pitch

M3, 0.5 mm Thread Pitch

M4, 0.7 mm Thread Pitch

M5, 0.8 mm Thread Pitch

M6, 1 mm Thread Pitch

M8, 1.25 mm Thread Pitch

M10, 1.5 mm Thread Pitch

M14, 2 mm Thread Pitch

M16, 2 mm Thread Pitch

M20, 2.5 mm Thread Pitch

Blue Phosphate Class 10.9 Alloy Steel

M10, 1.5 mm Thread Pitch

18-8 Stainless Steel

2-56

4-40

5-40

6-32

8-32

10-24

10-32

1/4"-20

1/4"-28

5/16"-18

3/8"-16

1/2"-13

5/8"-11

3/4"-10

M3, 0.5 mm Thread Pitch

M4, 0.7 mm Thread Pitch

M5, 0.8 mm Thread Pitch

M6, 1 mm Thread Pitch

M8, 1.25 mm Thread Pitch

M10, 1.5 mm Thread Pitch

M12, 1.75 mm Thread Pitch

M16, 2 mm Thread Pitch

316 Stainless Steel

M2, 0.4 mm Thread Pitch

M3, 0.5 mm Thread Pitch

M4, 0.7 mm Thread Pitch

M5, 0.8 mm Thread Pitch

M6, 1 mm Thread Pitch

M8, 1.25 mm Thread Pitch

M10, 1.5 mm Thread Pitch

M12, 1.75 mm Thread Pitch

Button

Fasten thin materials and other surfaces that can't be counterbored. Button head screws have a low-profile, rounded head that fits snugly to fastened surfaces and provides a neat appearance.

Black Oxide Alloy Steel

1-64

1-72

2-56

3-48

4-40

5-40

6-32

8-32

10-24

10-32

1/4"-20

1/4"-28

5/16"-18

5/16"-24

3/8"-16

3/8"-24

1/2"-13

5/8"-11

Zinc Plated Alloy Steel

4-40

6-32

8-32

10-24

10-32

1/4"-20

1/4"-28

5/16"-18

3/8"-16

1/2"-13

5/8"-11

Chrome Plated Alloy Steel

1/4"-20

5/16"-18

Blue Phosphate Alloy Steel

M3, 0.5 mm Thread Pitch

M4, 0.7 mm Thread Pitch

M5, 0.8 mm Thread Pitch

M6, 1 mm Thread Pitch

M8, 1.25 mm Thread Pitch

M10, 1.5 mm Thread Pitch

Black Oxide Class 10.9 Alloy Steel

M2, 0.4 mm Thread Pitch

M2.5, 0.45 mm Thread Pitch

M3, 0.5 mm Thread Pitch

M4, 0.7 mm Thread Pitch

M5, 0.8 mm Thread Pitch

M6, 1 mm Thread Pitch

M8, 1.25 mm Thread Pitch

M10, 1.5 mm Thread Pitch

M12, 1.75 mm Thread Pitch

Zinc Plated Class 10.9 Alloy Steel

M3, 0.5 mm Thread Pitch

M4, 0.7 mm Thread Pitch

M5, 0.8 mm Thread Pitch

M6, 1 mm Thread Pitch

M8, 1.25 mm Thread Pitch

M10, 1.5 mm Thread Pitch

Blue Phosphate Class 10.9 Alloy Steel

M12, 1.75 mm Thread Pitch

18-8 Stainless Steel

1-72

2-56

3-48

4-40

5-40

6-32

8-32

10-24

10-32

1/4"-20

1/4"-28

5/16"-18

5/16"-24

3/8"-16

1/2"-13

M3, 0.5 mm Thread Pitch

M4, 0.7 mm Thread Pitch

M5, 0.8 mm Thread Pitch

M6, 1 mm Thread Pitch

M8, 1.25 mm Thread Pitch

M10, 1.5 mm Thread Pitch

M12, 1.75 mm Thread Pitch

Low-Profile

Fit these screws into low-clearance spaces.

Black Oxide Alloy Steel

8-32

10-24

10-32

1/4"-20

5/16"-18

3/8"-16

1/2"-13

Black Oxide Class 8.8 Alloy Steel

M20, 2.5 mm Thread Pitch

M3, 0.5 mm Thread Pitch

M4, 0.7 mm Thread Pitch

M5, 0.8 mm Thread Pitch

M6, 1 mm Thread Pitch

M8, 1.25 mm Thread Pitch

M10, 1.5 mm Thread Pitch

M12, 1.75 mm Thread Pitch

M16, 2 mm Thread Pitch

Zinc Plated Class 8.8 Alloy Steel

M6, 1 mm Thread Pitch

18-8 Stainless Steel

1/4"-20

5/16"-18

3/8"-16

M3, 0.5 mm Thread Pitch

M4, 0.7 mm Thread Pitch

M5, 0.8 mm Thread Pitch

M6, 1 mm Thread Pitch

M8, 1.25 mm Thread Pitch

M10, 1.5 mm Thread Pitch

Vented

For use in vacuum systems, these screws have a hole drilled through their length for releasing gas and fluid from underneath the threads.

18-8 Stainless Steel

2-56

4-40

6-32

8-32

10-24

10-32

1/4"-20

5/16"-18

3/8"-16

Black Oxide Alloy Steel

2-56

Flanged

The washer-like flange spreads out the fastening force to help prevent damage to surface material.

Black Oxide Alloy Steel

M4, 0.7 mm Thread Pitch

M5, 0.8 mm Thread Pitch

M6, 1 mm Thread Pitch

M8, 1.25 mm Thread Pitch

M10, 1.5 mm Thread Pitch

M12, 1.75 mm Thread Pitch