Home> Products> ANSI B 18 21 1 spring washer

Copper standard form

Product brief description:

Durable and sturdy

No rust when exposed to water

Standard size

Environmentally friendly and aesthetically pleasing

Complete variety

Wide adaptability

Quality assurance

Material diversity (stainless steel, spring steel, copper, aluminum, alloy steel, etc)

Product specifics:

Stainless steel/cooper ANSI B 18 21 1 spring washer there are four categories, Heavy Helical Spring, Regular Helical Spring, High-collar helical spring, Extra-duty helical spring. Is widely used in mechanical railway industrial products, auto parts, power products, solar products, ships, building decoration engineering, bridges, furniture, home appliances, and other fields.

Product parameter table:

Dimensions of heavy helical spring:

Nominal Diameter		#2	#3	#4	#5	#6	#8	#10	#12	1/4	5/16	3/8	7/16	1/2
d	Nominal Size	0.086	0.099	0.112	0.125	0.138	0.164	0.19	0.216	0.25	0.3125	0.375	0.4375	0.5
	max	20.094	0.107	0.12	0.133	0.148	0.174	0.2	0.227	0.26	0.322	0.385	0.45	0.51
	min	0.088	0.101	0.114	0.127	0.141	0.167	0.193	0.22	0.252	0.314	0.377	0.44	0.502
dc	max	0.182	0.209	0.223	0.252	0.266	0.307	0.35	0.391	0.489	0.593	0.688	0.784	0.879
h	min	0.025	0.031	0.031	0.04	0.04	0.047	0.056	0.063	0.077	0.097	0.115	0.133	0.151
n	min	0.04	0.047	0.047	0.055	0.055	0.062	0.07	0.077	0.11	0.13	0.145	0.16	0.176
n1	min	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

Nominal Diameter		9/16	5/8	11/16	3/4	13/16	7/8	15/16	1"	1-1/16	1-1/8	1-3/16	1-1/4	1-5/16
d	Nominal Size	0.5625	0.625	0.6875	0.75	0.8125	0.875	0.9375	1	1.0625	1.125	1.1875	1.25	1.3125
	max	0.574	0.641	0.704	0.766	0.832	0.894	0.958	1.024	1.087	1.153	1.217	1.28	1.344
	min	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
dc	max	0.975	1.087	1.186	1.285	1.387	1.489	1.59	1.7	1.803	1.903	2.001	2.104	2.203
h	min	0.17	0.189	0.207	0.226	0.246	0.266	0.284	0.306	0.326	0.345	0.364	0.384	0.403
n	min	0.193	0.21	0.227	0.244	0.262	0.281	0.298	0.319	0.338	0.356	0.373	0.393	0.41
n1	min	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

Nominal Diameter		1-3/8	1-7/16	1-1/2	1-5/8	1-3/4	1-7/8	2"	2-1/4	2-1/2	2-3/4	3"
d	Nominal Size	1.375	1.4375	1.5	1.625	1.75	1.875	2	2.25	2.5	2.75	3
	max	1.408	1.472	1.534	1.663	1.789	1.914	2.039	2.293	2.543	2.793	3.043
	min	1.379	1.442	1.504	1.633	1.758	1.883	2.008	2.262	2.512	2.762	3.012
dc	max	2.301	2.396	2.491	2.694	2.82	2.945	3.144	3.398	3.648	3.91	4.16
h	min	0.422	0.44	0.458	0.458	0.458	0.458	0.496	0.496	0.496	0.526	0.526
n	min	0.427	0.442	0.458	0.491	0.491	0.491	0.526	0.526	0.526	0.532	0.532
n1	min	0.299	0.309	0.321	0.344	0.344	0.344	0.368	0.368	0.368	0.372	0.372

Dimensions of regular helical spring:

Screw Thread d		#2	#3	#4	#5	#6	#8	#10	#12	1/4	5/16	3/8	7/16	1/2
d	Nominal Size	0.086	0.099	0.112	0.125	0.138	0.164	0.19	0.216	0.25	0.3125	0.375	0.4375	0.5
	max	0.094	0.107	0.12	0.133	0.148	0.174	0.2	0.227	0.26	0.322	0.385	0.45	0.512
	min	0.088	0.101	0.114	0.127	0.141	0.167	0.193	0.22	0.252	0.314	0.377	0.44	0.502
dc	max	0.172	0.195	0.209	0.236	0.25	0.293	0.334	0.377	0.487	0.583	0.68	0.776	0.869
h	min	0.02	0.025	0.025	0.031	0.031	0.04	0.047	0.056	0.062	0.078	0.094	0.109	0.125
n	min	0.035	0.04	0.04	0.047	0.047	0.055	0.062	0.07	0.109	0.125	0.141	0.156	0.171
n1	min	0.024	0.028	0.028	0.033	0.033	0.038	0.043	0.049	0.076	0.087	0.099	0.109	0.12

Screw Thread d		9/16	5/8	11/16	3/4	13/16	7/8	15/16	1"	1-1/16	1-1/8	1-3/16	1-1/4	1-5/16
d	Nominal Size	0.5625	0.625	0.6875	0.75	0.8125	0.875	0.9375	1	1.0625	1.125	1.1875	1.25	1.3125
	max	0.574	0.641	0.704	0.766	0.832	0.894	0.958	1.024	1.087	1.153	1.217	1.28	1.344
	min	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
dc	max	0.965	1.073	1.17	1.265	1.363	1.459	1.556	1.656	1.751	1.847	1.943	2.036	2.133
h	min	0.141	0.156	0.172	0.188	0.203	0.219	0.234	0.25	0.266	0.281	0.297	0.312	0.328
n	min	0.188	0.203	0.219	0.234	0.25	0.266	0.281	0.297	0.312	0.328	0.344	0.359	0.375
n1	min	0.132	0.142	0.153	0.164	0.175	0.186	0.197	0.208	0.218	0.23	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"	2-1/4	2-1/2	2-3/4	3"
d	Nominal Size	1.375	1.4375	1.5	1.625	1.75	1.875	2	2.25	2.5	2.75	3
	max	1.408	1.472	1.534	1.663	1.789	1.914	2.039	2.293	2.543	2.793	3.043
	min	1.379	1.442	1.504	1.633	1.758	1.883	2.008	2.262	2.512	2.762	3.012
dc	max	2.219	2.324	2.419	2.553	2.679	2.811	2.936	3.221	3.471	3.824	4.074
h	min	0.344	0.359	0.375	0.389	0.389	0.422	0.422	0.44	0.44	0.458	0.458
n	min	0.391	0.406	0.422	0.424	0.424	0.427	0.427	0.442	0.442	0.491	0.491
n1	min	0.274	0.284	0.295	0.297	0.297	0.299	0.299	0.309	0.309	0.344	0.344