Dimensions for DIN 6918 Square taper washers for U-sections

Nominal Size	thread size	d		a			b			c		e	h			r	t	z	Weight kg/1000pcs
		min= nominal	max	Nominal	min	max	Nominal	min	max	min=nominal	max		nom	min	max	approx	approx
13	M12	13	13.43	26	24	28	30	29.35	30.65	1.6	1.9	3.7	4.9	3.9	5.9	2	0.7	1.68	18.3
17	M16	17	17.23	32	29.5	34.5	36	35.2	36.8	1.6	1.9	4.45	5.9	4.9	6.9	2.4	0.8	2	31.7
21	M20	21	21.52	40	37.5	42.5	44	43.2	44.8	2	2.5	5.25	7	5.8	8.2	2.8	0.9	2	27.1
23	M22	23	23.52	44	41.5	56.5	50	49.2	50.8	2	2.5	6	8	6.8	9.2	3.2	1	2	82.8
25	M24	25	25.52	56	53	59	56	55.05	56.95	2	2.5	6.26	8.5	7.3	9.7	3.2	1	3.8	129
25A	M24	25	25.52	56	53	59	56	55.05	56.95	2	2.5	6.25	7.65	6.45	8.85	3.88	1	3.8	128
28	M27	28	28.52	56	53	59	56	55.05	56.95	2.5	3	6.26	8.5	7.3	9.7	3.2	1	3.8	122
28A	M27	28	28.52	56	53	59	56	55.05	56.95	2.5	3	6.25	7.65	6.45	8.85	3.88	1	3.8	121
31	M30	31	32	62	59	65	62	61.05	62.95	2.5	3	6.52	9	7.8	10.2	3.2	1	3.8	156
31A	M30	31	32	62	59	65	62	61.05	62.95	2.5	3	6.5	8.05	6.85	9.25	3.96	1	3.8	155
37	M36	37	38	68	65	71	68	67.05	68.95	3	3.5	6.68	9.4	8.2	10.6	3.2	1	3.8	182
37A	M36	37	38	68	65	71	68	67.05	68.95	3	3.5	7	8.7	7.5	9.9	4.24	1	3.8	191