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Hardened circular, clipped circular, and extra-thick washers

ASTM F 436 - 2011

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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
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

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
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.

Alternative history

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

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Similar Standards

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