ASTM F436

ASTM F 436 - 2011

Hardened circular

clipped circular

and extra-thick washers

For thread diameter

d
d_c
h		circular and clipped	max
			min
		extra thick	max
			min
n		min

0.281	0.344	0.406	0.469	0.531	0.625	0.688	0.813	0.938	1.063	1.188	1.375
0.625	0.688	0.813	0.922	1.063	1.188	1.313	1.468	1.750	2.000	2.250	2.500
0.080	0.080	0.080	0.080	0.177	0.177	0.177	0.177	0.177	0.177	0.177	0.177
0.051	0.051	0.051	0.051	0.097	0.110	0.122	0.122	0.136	0.136	0.136	0.136
/	/	/	/	0.375	0.375	0.375	0.375	0.375	0.375	0.375	0.375
/	/	/	/	0.305	0.305	0.305	0.305	0.305	0.305	0.305	0.305
0.219	0.281	0.344	0.406	0.438	0.500	0.563	0.656	0.781	0.875	1.000	1.094

For thread diameter

d
d_c
h		circular and clipped	max
			min
		extra thick	max
			min
n		min

1.500	1.625	1.875	2.125	2.375	2.625	2.875	3.125	3.375	3.625	3.875	4.125
2.750	3.000	3.375	3.750	4.000	4.500	5.000	5.500	6.000	6.500	7.000	7.500
0.177	0.177	0.280	0.280	0.340	0.340	0.340	0.340	0.340	0.340	0.340	0.340
0.136	0.136	0.178	0.178	0.240	0.240	0.240	0.240	0.240	0.240	0.240	0.240
0.375	0.375	0.375	0.375	0.375	0.375	0.375	0.375	0.375	0.375	0.375	0.375
0.305	0.305	0.305	0.305	0.305	0.313	0.313	0.313	0.313	0.313	0.313	0.313
1.219	1.313	1.531	1.750	2.000	2.188	2.406	2.625	2.875	3.063	3.313	3.500

①,The n value is approximately equal to 0.875 times the nominal diameter of the washer.

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