Active standard | Published: 31/12/1954

BS 2558:1954

Specification for tubular box spanners.

Available languages: English

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Detail information

Designation: BS 2558:1954

Publication date: 31/12/1954

Pages: 32

Country: British technical standard

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Anotation

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. Status: Confirmed

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