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Dimensions of Regular Helical Spring-Lock Washers [Table 1] (SAE J403, J411, J405, J404, ASTM B211, B159, B99, QQ-N-286)

ASME/ANSI B 18.21.1 - 2009

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Screw Thread
d

10#

12#

1/4

5/16

3/8

7/16

1/2

d	Nominal Size
	max
	min
d_c	max
h	min
n	min
n₁	min

0.0860	0.0990	0.1120	0.1250	0.1380	0.1640	0.1900	0.2160	0.2500	0.3125	0.3750	0.4375	0.5000
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
0.172	0.195	0.209	0.236	0.250	0.293	0.334	0.377	0.487	0.583	0.680	0.776	0.869
0.020	0.025	0.025	0.031	0.031	0.040	0.047	0.056	0.062	0.078	0.094	0.109	0.125
0.035	0.040	0.040	0.047	0.047	0.055	0.062	0.070	0.109	0.125	0.141	0.156	0.171
0.024	0.028	0.028	0.033	0.033	0.038	0.043	0.049	0.076	0.087	0.099	0.109	0.120

Screw Thread
d

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	Nominal Size
	max
	min
d_c	max
h	min
n	min
n₁	min

0.5625	0.6250	0.6875	0.7500	0.8125	0.8750	0.9375	1.0000	1.0625	1.1250	1.1875	1.2500	1.3125
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
0.965	1.073	1.170	1.265	1.363	1.459	1.556	1.656	1.751	1.847	1.943	2.036	2.133
0.141	0.156	0.172	0.188	0.203	0.219	0.234	0.250	0.266	0.281	0.297	0.312	0.328
0.188	0.203	0.219	0.234	0.250	0.266	0.281	0.297	0.312	0.328	0.344	0.359	0.375
0.132	0.142	0.153	0.164	0.175	0.186	0.197	0.208	0.218	0.230	0.241	0.251	0.262

Screw Thread
d

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	Nominal Size
	max
	min
d_c	max
h	min
n	min
n₁	min

1.3750	1.4375	1.5000	1.6250	1.7500	1.8750	2.0000	2.2500	2.5000	2.7500	3.0000
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
2.219	2.324	2.419	2.553	2.679	2.811	2.936	3.221	3.471	3.824	4.074
0.344	0.359	0.375	0.389	0.389	0.422	0.422	0.440	0.440	0.458	0.458
0.391	0.406	0.422	0.424	0.424	0.427	0.427	0.442	0.442	0.491	0.491
0.274	0.284	0.295	0.297	0.297	0.299	0.299	0.309	0.309	0.344	0.344

Alternative history

ANSI/ASME B 18.21.1 - 1983 ANSI/ASME B 18.21.1 - 1999 ANSI/ASME B 18.21.1 - 2009 ASME B 18.21.1 - 2009(R2016)

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Similar Standards

1	[GB] GB 93 - 1976	Single coil spring lock washers,Normal type View Suppliers
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