Nuts & bolts

Nuts & bolts

Engineering science related to nuts, bolts, threaded fasteners and tightening techniques.

Industry: Machine tools

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Nuts & bolts

lockwasher

Machine tools; Nuts & bolts

A washer that is not completely smooth or flat, designed to prevent a nut from loosening, placed under the nut on a screw or bolt.

Special bolts that have a tang at the threaded end of the shank. This tang is gripped by the tightening tool during assembly so that the reaction torque is absorbed whilst the nut is tightened from ...

tolerance class

Machine tools; Nuts & bolts

A combination of tolerance grade and a fundamental deviation which is given to an internal or external thread. A tolerance class for an internal thread when combined with the tolerance class for an ...

reduced shank bolt

Machine tools; Nuts & bolts

A bolt whose shank diameter is smaller than the nominal diameter of the bolt (normally the shank diameter of such a bolt is approximately equal to the effective diameter of the thread).

bearing area

Machine tools; Nuts & bolts

That part of bolt or fastener subjected to bearing load against the wall of the hole.

British Standard Fine (BSF)

Machine tools; Nuts & bolts

A thread form based upon the British Standard Whitworth form but with a finer thread (more threads per inch for a given diameter). This thread form was first introduced in 1908, the thread form is ...