screw thread series index

(threads on fasteners)

UNC (The commonest series in the United States; what you'll find in the hardware store.)

12N

16N

A.L.A.M.

BSC British Standard Cycle)

BSF (British Standard Fine)

BSW (British Standard Whitworth)

CEI (Cycle Engineer's Institute)

NC (National Coarse)

NF (National Fine)

SB (Manufacturers' Stove Bolt)

V-thread

UNM (Unified Miniature)

BA (British Association)

Elgin (proprietary screws at a major watch manufacturer)

SF (French Standard Thread, and French Metric Thread)

Waltham (proprietary screws at a major watch manufacturer)

See pipes for the threads on pipes.

See bottles for the threads on bottle caps.

See light bulbs for the threads on the bases of incandescent light bulbs.

See bolts for other characteristics of threaded fasteners, such as strength grades.