BS 2558:1954现行
Specification for tubular box spanners
出版：British Standards Institution
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基本信息
标准编号： BS 2558:1954
发布时间：1954/12/31 0:00:00
标准类别：Standard
出版单位：British Standards Institution
标准页数：32
标准简介
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.
标准备注
© British Standards Institution 2013
Amendment notes:
PD 2150 published 15 March 1955
PD 2696 published 15 January 1957
PD 3590 published 15 December 1959
等同采用的国际标准
ISO 2236:1991 - Similar
本标准修订后的版本
