Specification for machine screws and machine screw nuts (B.S.W. & B.S.F. threads).

The information about the standard:

Designation standards: BS 450:1958
Publication date standards: 30.6.1958
The number of pages: 48
Approximate weight : 144 g (0.32 lbs)
Country: British technical standard
Category: Technical standards BS

Annotation of standard text BS 450:1958 :

Dimensions, tolerances and general requirements for sizes above and below 1 in. Covers screws of the following types: 90 degrees countersunk and raised countersunk, round, pan, cheese and mushroom with slotted and with recessed heads. Appendices on dimensions of hexagon head screws and hexagon precision nuts in sizes below 1 inch; flushness gauge for countersunk heads; penetration of standard gauge points for recessed heads; formulae for dimensions; tables of standard sizes. Status: Confirmed