BS-1981 › Specification for unified machine screws and machine screw nuts
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AMD 7485 - Jan. 15, 1993
Unified screw threads, Dimensions, Slotted-head fasteners, Aluminium alloys, Brass, Tensile strength, Radius, Pan-head fasteners, Fasteners, Screws (bolts), Nuts, Dimensional tolerances, Raised-head fasteners, Threaded fasteners, Hexagonal-head fasteners, ISO metric threads, Steels, Recessed-head fasteners, Diameter, Cheese-head fasteners, Length, Square-head fasteners, Countersunk fasteners
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Aug. 30, 1991