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BS 325:1947

Specification for black cup and countersunk bolts and nuts

Standard Details

Nominal sizes ¼ in to 1 in. Dimensions for cup head bolts with square, oval and nibbed shanks, and countersunk headed bolts with square and nibbed shanks for use on steel work and wood work; square and hexagon nuts. Lengths of thread and their tolerances, form of end of bolt shank, quality of steel.

General Information

Status : Confirmed
Standard Type: Main
Document No: BS 325:1947
Document Year: 1947
Pages: 16
  • Section Volume:
  • GBM11 Screw Threads & Fasteners (GMB11)

Life Cycle

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Confirmed
BS 325:1947

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