BS 450:1958 - Specification for machine screws and machine screw nuts (B.S.W. & B.S.F. threads)

BS 450:1958

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

Status : Confirmed, Current   Published : June 1958



Dimensions, tolerances and general requirements for sizes above and below $9D 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 $9D inch; flushness gauge for countersunk heads; penetration of standard gauge points for recessed heads; formulae for dimensions; tables of standard sizes.

Standard NumberBS 450:1958
TitleSpecification for machine screws and machine screw nuts (B.S.W. & B.S.F. threads)
StatusConfirmed, Current
Publication Date30 June 1958
Confirm Date01 November 2017
Normative References(Required to achieve compliance to this standard)No other standards are normatively referenced
Informative References(Provided for Information)No other standards are informatively referenced
Amended ByPD 5730
PD 5905
AMD 1561
DescriptorsWhitworth screw threads, Countersunk fasteners, Recessed-head fasteners, Oval-head fasteners, Round-head fasteners, Dimensions, Length, Cheese-head fasteners, Tensile strength, Pan-head fasteners, Gauges, Hexagonal-head fasteners, Nuts, Heads (fasteners), Slotted-head fasteners, Screws (bolts), Flushness tolerances, Diameter, Raised-head fasteners
Title in FrenchVis d'assemblage et ecrous de vis d'assemblage (filetages B.S.W. & B.S.F.). Specification
Title in GermanMaschinenschrauben und Maschinenschraubenmuttern (B.S.W. & B.S.F. Gewinde). Spezifikation
ISBN0 580 35309 5
File Size1.083 MB
NotesThis standard has been declared obsolescent for a further period.

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