Nomenclature, form, dimensions, materials, heat treatment, hardness, marking and testing of bi-square, hexagonal and bi-hexagonal socket spanners with square drives and the related driving handles and components. The spanners are suitable for hexagon sizes in the Unified and Whitworth series and screwed fasteners.
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BS 4006-1:1966
Original price was: $264.16.$132.00Current price is: $132.00.
Specification for socket spanners.-Inch series
BSI Group , 04/01/1966
