Cup Head Bolt

Cup Head Bolt is threaded with a domed head and square neck, also known as a carriage bolt. Suited largely for timber applications where a smooth head is preferred, or the head is not easily accessed for fastening and prevents the bolt from turning when the nut is tightened.


  • Metric: Dia M6 - M16 & Lengths 20mm - 300mm
  • Imperial: Dia 1/4" - 1/2" & Lengths 3/4" - 6"
  • Threads: Metric Coarse & Imperial UNC
  • Strength: A2-70, A4-70/80
  • Material/Finish: G304/G316 Stainless Steel
  • Compliance: DIN 603, ANSI B18.5