Hex socket head cap screw I=3(Okai(Coarse Steel Trivalent black(Black) 5 X 20 Pitch 0.8
A bolt with a cylindrical head featuring a hexagonal socket. Tightening is performed using a hex key (Allen wrench).
In most cases, they are used without a nut. They are also known as cap screws or socket screws.
When fastening hex bolts, a wrench requires working clearance, whereas a hex key does not.
Cap Bolt
Cap Bolt
Product Details

- Hex socket head cap screw Type I=3 Okai Coarse pitch
- Nominal diameter M5
- Length under head (ℓ) 20.0
- Pitch 0.8
- Head diameter (dk) Nominal 8.5 Max 8.72 Min 8.28
- Head height (k) Nominal 5 Min 4.82
- Hex socket width across flats (s) Nominal 4 Min 4.02
- Hex socket depth (t) Min 2.5
- Flat washer outer diameter x thickness (D1xT) 10x1.0
- Spring washer outer diameter (d1) Max 8.5
Hex socket head cap screw I=3(Okai(Coarse Steel Trivalent black(Black) 5 X 20 Pitch 0.8
| Steel | Trivalent black(Black) | 5 X 20 | Individual sale | View Details |
|---|
Hex socket head cap screw I=3(Okai(Coarse Steel Trivalent black(Black) 5 X 20 Pitch 0.8 - Surface Finish Variants
| Material | Surface Treatment | Size | Individual Sale | View Details |
|---|---|---|---|---|
| Steel | Unplated | 5 X 20 | Individual sale | View Details |
| Steel | Zinc plated(Silver) | 5 X 20 | Individual sale | View Details |
| Steel | Trivalent white(Silver) | 5 X 20 | Individual sale | View Details |

