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Dimensions of Heavy Helical Spring-Lock Washers [Table 2] (SAE J403, J411, J405, J404, ASTM B211, B159, B99, QQ-N-286)

ASME/ANSI B 18.21.1 (T2) - 2009

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^*Models with different eras.

Size

10#

12#

1/4

5/16

3/8

7/16

1/2

d	max
d	min
d_c	max
h	min
n	min
n₁	min

0.094	0.107	0.120	0.133	0.148	0.174	0.200	0.227	0.260	0.322	0.385	0.450	0.512
0.088	0.101	0.114	0.127	0.141	0.167	0.193	0.220	0.252	0.314	0.377	0.440	0.502
0.182	0.209	0.223	0.252	0.266	0.307	0.350	0.391	0.489	0.593	0.688	0.784	0.879
0.025	0.031	0.031	0.040	0.040	0.047	0.056	0.063	0.077	0.097	0.115	0.133	0.151
0.040	0.047	0.047	0.055	0.055	0.062	0.070	0.077	0.110	0.130	0.145	0.160	0.176
0.028	0.033	0.033	0.038	0.038	0.043	0.049	0.054	0.077	0.091	0.101	0.112	0.123

Size

9/16

5/8

11/16

3/4

13/16

7/8

15/16

1-1/16

1-1/8

1-3/16

1-1/4

1-5/16

d	max
d	min
d_c	max
h	min
n	min
n₁	min

0.574	0.641	0.704	0.766	0.832	0.894	0.958	1.024	1.087	1.153	1.217	1.280	1.344
0.564	0.628	0.691	0.753	0.816	0.878	0.941	1.003	1.066	1.129	1.192	1.254	1.317
0.975	1.087	1.186	1.285	1.387	1.489	1.590	1.700	1.803	1.903	2.001	2.104	2.203
0.170	0.189	0.207	0.226	0.246	0.266	0.284	0.306	0.326	0.345	0.364	0.384	0.403
0.193	0.210	0.227	0.244	0.262	0.281	0.298	0.319	0.338	0.356	0.373	0.393	0.410
0.135	0.147	0.159	0.171	0.183	0.197	0.209	0.223	0.237	0.249	0.261	0.275	0.287

Size

1-3/8

1-7/16

1-1/2

1-5/8

1-3/4

1-7/8

2-1/4

2-1/2

2-3/4

d	max
d	min
d_c	max
h	min
n	min
n₁	min

1.408	1.472	1.534	1.663	1.789	1.914	2.039	2.293	2.543	2.793	3.043
1.379	1.442	1.504	1.633	1.758	1.883	2.008	2.262	2.512	2.762	3.012
2.301	2.396	2.491	2.694	2.820	2.945	3.144	3.398	3.648	3.910	4.160
0.422	0.440	0.458	0.458	0.458	0.458	0.496	0.496	0.496	0.526	0.526
0.427	0.442	0.458	0.491	0.491	0.491	0.526	0.526	0.526	0.532	0.532
0.299	0.309	0.321	0.344	0.344	0.344	0.368	0.368	0.368	0.372	0.372

Alternative history

ANSI/ASME B 18.21.1 - 1999 ANSI/ASME B 18.21.1 - 2009 ASME B 18.21.12009 - 2016

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Similar Standards

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30	[UNI] UNI 3558 - 1959	Track Fastenings of Railway Lines, Spring Washers for Track Bolts
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32	[GB] GB /T 7244 - 1987	Single Coil Spring Lock Washers Heavy Type
33	[BS] BS 1802 (B) - 1951	Type B Single Coil Rectangular Section Spring Washers
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