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.
BS 3555:1962
Original price was: $264.16.$132.00Current price is: $132.00.
Specification for ring spanners
BSI Group , 10/31/1962
