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.
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
