Hex socket head cap screw I=3(Okai(Coarse Steel Trivalent white(Silver) 8 X 25 Pitch 1.25

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

• Hex socket head cap screw I=3 Okai Coarse pitch
• Nominal diameter M8
• Length under head (ℓ) 25.0
• Pitch 1.25
• Head diameter (dk) Nominal 13 Max 13.27 Min 12.73
• Head height (k) Nominal 8 Min 7.64
• Hex socket width across flats (s) Nominal 6 Min 6.02
• Hex socket depth (t) Min 4
• Flat washer outer diameter x thickness (D1xT) 17x1.6
• Spring washer outer diameter (d1) Max 14.5