ISO 7091 Plain washers – Basic dimensions

Selected sizes used for CE Marking under EN 15048

Diameter (d)	M12	M16	M20	M22	M24	M27	M30	M33	M36
d1	13.50-13.93	17.50-17.93	22.00-22.52	24.00-24.52	26.00-26.52	30.00-30.52	33.00-33.62	36.00-37.00	39.00-40.00
d2	22.7-24.0	28.7-30.0	35.4-37.0	37.4-39.0	42.4-44.0	48.4-50.0	54.1-56.0	58.1-60.0	64.1-66.0
h (nom)	2.5	3	3	3	4	4	4	5	5
h	2.2-2.8	2.4-3.6	2.4-3.6	2.4-3.6	3.4-4.6	3.4-4.6	3.4-4.6	4.0-6.0	4.0-6.0

Dimensions in milimeters