Stainless Steel Hex Socket CSK Head Cap Screw - Grade 202, 304, 316, A2, A2-70
A Hex Socket CSK Head Cap Screw Grade 202, 304, 316 is a fastener with a countersunk (conical) head and an internal hexagonal drive (Allen key). The head is designed to sit flush with or below the surface of the material it is fastened into.
ANSI B 18.3 |
||
Size |
Length |
|
F/T |
H/T |
|
1/4" |
3/4" - 2 3/8" |
1 3/4" - 2 3/8" |
5/16" |
3/4" - 2 3/4" |
2" - 3" |
3/8" |
3/4" - 2 3/4" |
2 1/4" - 3" |
7/16" |
1" - 3" |
2 1/2" - 3 3/4" |
1/2" |
1" - 3" |
2 1/2" - 3 3/4" |
5/8 |
1 5 /8" - 6" |
3 1/4" - 6" |
Hex Socket Flange Button Head Screw – Metric Specification Table
| Thread Size (M) | Thread Pitch (mm) | Head Diameter (D) | Head Height (K) | Socket Size (S) | Standard | Material Options |
| M3 | 0.5 | 6.0 mm | 1.65 mm | 2 mm | DIN 7991 / ISO 10642 | Steel 8.8, SS A2/A4 |
| M4 | 0.7 | 8.0 mm | 2.2 mm | 2.5 mm | DIN 7991 / ISO 10642 | Steel 8.8, SS A2/A4 |
| M5 | 0.8 | 10.0 mm | 2.5 mm | 3 mm | DIN 7991 / ISO 10642 | Steel 8.8, SS A2/A4 |
| M6 | 1.0 | 12.0 mm | 3.0 mm | 4 mm | DIN 7991 / ISO 10642 | Steel 10.9, SS A2/A4 |
| M8 | 1.25 | 16.0 mm | 4.0 mm | 5 mm | DIN 7991 / ISO 10642 | Steel 10.9, SS A2/A4 |
| M10 | 1.5 | 20.0 mm | 5.0 mm | 6 mm | DIN 7991 / ISO 10642 | Steel 10.9, SS A2/A4 |
| M12 | 1.75 | 24.0 mm | 6.0 mm | 8 mm | DIN 7991 / ISO 10642 | Steel 10.9, SS A2/A4 |
- Head Height (K) is thinner than standard hex bolts to allow for flush mounting.
- Socket Size (S) refers to the Allen key size needed.
- Strength Class: Typically 8.8, 10.9 for carbon steel, or A2-70/A4-80 for stainless steel.
- These are commonly used in precision equipment, machine panels, electronics, and aerospace assemblies.
Introducing the Hex Socket CSK Head Cap Screw – engineered for precision and durability. This versatile fastener features a countersunk design that ensures a seamless finish while providing optimal torque performance through its hex socket drive. Ideal for applications requiring strength and reliability, our cap screw stands out in both technical specifications and aesthetics. Elevate your projects with the unparalleled quality of our Hex Socket CSK Head Cap Screws!
Tensile Strength
≥700 MPa
Yield Strength
≥1100 MPa
Elongation
≥12%
Hardness Max
250 HB
Materials
Stainless Steel
- AISI 202
- AISI 304
- AISI 316
Steel Grade
- 8.8
- 10.9
- 12.9
Finishing
- Polished
- Geomet
- Dacromet
- Teflon
- Hot-Dip Galvanzing
- Zinc (Yellow, White, Blue)
- Black Qxide
Thread
- Metric
- BSW
- UNC
- UNF
Standards
- Din 931
- ISO 4014
- ASTM A325
- ASTM A490
- ASTM A307
- IS 1364
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