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BS 450:1958

Specification for machine screws and machine screw nuts (B.S.W. & B.S.F. threads)

Standard Details

Dimensions, tolerances and general requirements for sizes above and below ¼ in. Covers screws of the following types: 90 degrees countersunk and raised countersunk, round, pan, cheese and mushroom with slotted and with recessed heads. Appendices on dimensions of hexagon head screws and hexagon precision nuts in sizes below ¼ inch; flushness gauge for countersunk heads; penetration of standard gauge points for recessed heads; formulae for dimensions; tables of standard sizes.

General Information

Status : Confirmed
Standard Type: Main
Document No: BS 450:1958
Document Year: 1958
Pages: 48
  • Section Volume:
  • GBM11 Screw Threads & Fasteners (GMB11)

Life Cycle

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Confirmed
BS 450:1958

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