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Hardened Circular, Clipped Circular, and Extra, Inch Washers

ASTM F 436 - 2019

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Download CAD Model^*

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^*Models with different eras.

For thread diameter

1/4

5/16

3/8

7/16

1/2

9/16

5/8

3/4

7/8

1-1/8

1-1/4

d	min
	max
d_c	min
	max
h	circular and clipped	min
		max
	extra thick	min
		max
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
0.313	0.376	0.438	0.501	0.563	0.657	0.720	0.845	0.970	1.126	1.251	1.438
0.593	0.656	0.781	0.890	1.031	1.156	1.281	1.436	1.718	1.937	2.187	2.437
0.657	0.720	0.845	0.954	1.095	1.220	1.345	1.500	1.782	2.063	2.313	2.563
0.051	0.051	0.051	0.051	0.097	0.11	0.122	0.122	0.136	0.136	0.136	0.136
0.08	0.08	0.08	0.08	0.177	0.177	0.177	0.177	0.177	0.177	0.177	0.177
/	/	/	/	0.305	0.305	0.305	0.305	0.305	0.305	0.305	0.305
/	/	/	/	0.375	0.375	0.375	0.375	0.375	0.375	0.375	0.375
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

1-3/8

1-1/2

1-3/4

2-1/4

2-1/2

2-3/4

3-1/4

3-1/2

3-3/4

d	min
	max
d_c	min
	max
h	circular and clipped	min
		max
	extra thick	min
		max
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
1.563	1.688	1.938	2.188	2.438	2.688	2.938	3.188	3.500	3.750	4.000	4.250
2.687	2.937	3.312	3.687	3.937	4.437	4.937	5.437	5.875	6.375	6.875	7.375
2.813	3.063	3.438	3.813	4.063	4.563	5.063	5.563	6.125	6.625	7.125	7.625
0.136	0.136	0.178 ②	0.178 ②	0.24 ③	0.24 ③	0.24 ③	0.24 ③	0.24 ③	0.24 ③	0.24 ③	0.24 ③
0.177	0.177	0.28 ②	0.28 ②	0.34 ③	0.34 ③	0.34 ③	0.34 ③	0.34 ③	0.34 ③	0.34 ③	0.34 ③
0.305	0.305	0.305	0.305	0.305	0.313	0.313	0.313	0.313	0.313	0.313	0.313
0.375	0.375	0.375	0.375	0.375	0.375	0.375	0.375	0.375	0.375	0.375	0.375
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.
②,3/16 in. nominal.
③,1/4 in. nominal.

Alternative history

ASTM F 436 - 1993(R2000) ASTM F 436 - 2011 ASTM F 436 - 2019

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