hooks and eyes

drawing of hook and eye

These fasteners are made in a wide variety of styles. The sizes of the most common type, made of bent wire, run from 00 (the smallest) to 5 and are the same in the United States and United Kingdom. The dimensions below, all in inches, come from measurements of examples and not from a standard.

  00 0 1 2 3 4 5
A 1/8 5/32 1/8 11/64 13/64 7/32 9/32
B 1/4 5/16 13/32 16/32 17/32 21/32 25/32

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