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Hexagon socket countersunk head screw

Hexagon socket countersunk head screw

Diagram: Bolts Hexagon socket countersunk head screw
Nominal diameter
Threaded portiondkSTapping drill diameterClearance hole diameterCounterbore depth
PitchPitch diameterClass 1Class 2Class 3

Notes

  • References
    • JIS B 1194(2006)
    • JIS B 1017(2008)
  • The tapping drill diameter is calculated as
    d′=d−Pd'=d-P

    d′d': tapping drill diameter, dd: nominal diameter, PP: pitch
Bolts — Hexagon socket countersunk head screw | Updraft - Mechanical Engineering Calculators