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Homepage>BS Standards>21 MECHANICAL SYSTEMS AND COMPONENTS FOR GENERAL USE>21.060 Fasteners>21.060.10 Bolts, screws, studs>BS 325:1947 Specification for black cup and countersunk bolts and nuts
immediate downloadReleased: 1947-04-17
BS 325:1947 Specification for black cup and countersunk bolts and nuts

BS 325:1947

Specification for black cup and countersunk bolts and nuts

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Standard number:BS 325:1947
Pages:16
Released:1947-04-17
ISBN:0 580 34071 6
Status:Standard
DESCRIPTION

BS 325:1947


This standard BS 325:1947 Specification for black cup and countersunk bolts and nuts is classified in these ICS categories:
  • 21.060.10 Bolts, screws, studs
  • 21.060.20 Nuts

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.
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