British Standard Fasteners

BS 57

Specification. B.A. screws bolts and nuts.
BS 325

Specification for black cup and countersunk bolts and nuts.
BS 450

Specification for machine screws and machine screw nuts (B.S.W. & B.S.F. threads).
BS 768

Specification for slotted grub screws.
BS 916

Specification for black bolts, screws and nuts, hexagon and square, with B.S.W. or B.S.F. threads.
BS 1083

Specification for precision hexagon bolts, screws and nuts (B.S.W. & B.S.F. threads).
BS 1768

Specification for Unified precision hexagon bolts, screws, & nuts (UNC & UNF threads). Normal series.
BS 1769

Specification for Unified black hexagon bolts, screws, nuts (UNC & UNF threads). Heavy series.
BS 1804-1

Specification for parallel steel dowel pins. Inch series.
BS 1804-2

Specification for parallel steel dowel pins. Metric series.
BS 1804-3

Specification for parallel and taper dowel pins having screw threads for extraction purpose - metric series.
BS 1981

Specification for unified machine screws and machine screw nuts.
BS 2061

Specification for phosphor bronze spring washers for general engineering purposes.
BS 2470

Specification for hexagon socket screws and wrench keys. Inch series.
BS 2693

Specification for screwed studs for general purpose.
BS 2827

Specification for machine screw nuts, pressed type (B.A. and Whitworth form threads).
BS 3410

Specification for metal washers for general engineering purposes.
BS 3673

Specification for spring retaining rings, carbon steel circlips - metric series.
BS 3692

Specification for precision hexagon bolts, screws and nuts.
BS 4168-1

Specification for hexagon socket head cap screws and wrench keys - metric series.
BS 4168-2

Specification for hexagon socket set screws with flat point and wrench keys - metric series.
BS 4168-3

Specification for hexagon socket set screws with cone point and wrench keys - metric series.
BS 4168-4

Specification for hexagon socket set screws with dog point and wrench keys - metric series.
BS 4168-5

Specification for hexagon socket set screws with cup point and wrench keys - metric series.
BS 4168-6

Specification for hexagon socket button head screws and wrench keys - metric series.
BS 4168-7

Specification for hexagon socket shoulder screws and wrench keys - metric series.
BS 4168-8

Specification for hexagon socket countersunk head screws and wrench keys - metric series.
BS 4168-9

Specification for hexagon socket screws and wrench keys - metric series.
BS 4174

Specification for self-tapping screws and metallic drive screws.
BS 4183

Specification for machine screws and machine screw nuts. Metric series.
BS 4190

Specification for black hexagon bolts, screws and nuts.
BS 4235

Specification for metric keys and keyways. Woodruff keys and keyways.
BS 4320

Specification for metal washers for general engineering purposes - metric series.
BS 4439

Specification for screwed studs for general purposes - metric series.
BS 4464

Specification for spring washers for general engineering and automobile purposes - metric series.
BS 4882

Specification for bolting for flanges and pressure containing purposes.
BS 4933

Specification for metric black cup and countersunk head bolts and screws with hexagon nuts.
BS 6487

Specification for split pin holes and wire holes in bolts, screws and studs.
BS 7419

Specification for square head holding down bolts.