BS 3555:1962被替代
Specification for ring spanners
出版：British Standards Institution
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基本信息
標準編號： BS 3555:1962
發布時間：1962/10/31 0:00:00
標準類別：Standard
出版單位：British Standards Institution
標準頁數：16
標準簡介
Specifies the form, dimensions, materials, heat treatment, hardness, marking and testing of bihexagonal ring spanners of the double-ended cranked, single-ended cranked, double-ended flat and single-ended flat types. The spanners are suitable for hexagon sizes in the Unified and Whitworth series of screwed fasteners.
標準備注
? British Standards Institution 2013
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