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BS 2558:1954

Specification for tubular box spanners

Standard Details

Steels for spanners and tommy bars; hardness figures, performance test. Two grades of spanner. Dimensions: unified precision hexagons, normal series, in BS 1768; Unified black hexagons, heavy series, in BS 1769; Unified machine screw hexagons in BS 1981; precision hexagons B.S.W. and B.S.F. in BS 1083; black hexagons in BS 916; B.A. hexagons in BS 57; Whitworth large hexagons (originally in BS 190, now obsolete); metric hexagons.

General Information

Status : Confirmed
Standard Type: Main
Document No: BS 2558:1954
Document Year: 1954
Pages: 32
  • Section Volume:
  • GBM14 Manufacturing Engineering (GMB14)

Life Cycle

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BS 2558:1954
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