Click Specification

Double Coil Helical Spring Lock Washers for Wood Structures

ASME B 18.21.3 - 2008 (R2013)

Display drawing:

Nominal Diameter

3/8

1/2

5/8

3/4

7/8

d	Nominal Size
	min
	max
d_c	max
a	min
a	max
H	min
w	min
n	max
t	min

0.3750	0.5000	0.6250	0.7500	0.8750	1.0000
0.385	0.510	0.635	0.760	0.885	1.010
0.408	0.535	0.660	0.791	0.915	1.040
0.814	1.035	1.284	1.415	1.808	1.928
30°	30°	30°	30°	30°	30°
35°	35°	35°	35°	35°	35°
0.530	0.530	0.785	0.785	0.860	0.860
0.196	0.243	0.302	0.302	0.437	0.437
0.145	0.145	0.220	0.220	0.229	0.229
0.156	0.156	0.234	0.234	0.250	0.250

①,Washers shall be made from material meeting the chemical composition requirements of the following standards:
a、up to and including 3/4 in. carbon steel -SAE J403 1055-1065(UNS G10550-G10650);
b、7/8 in. and above boron steel -SAE J411 10B55-10B65

Similar Standards

1	[DIN] DIN 137 (B) - 1987	Wave Spring Washers View Suppliers
2	[DIN] DIN 137 (A) - 1987	Curved spring washers View Suppliers
3	[DIN] DIN 6904 - 1990	Curved Spring Washers for Screw and Washer Assemblies View Suppliers
4	[DIN] DIN 137 (B) - 1994	Wave Spring Washers View Suppliers
5	[GB] GB /T 955 - 1987	Wave Spring Washers View Suppliers
6	[CNS] CNS 4406 - 1979	Saddle-Shaped Spring Washers View Suppliers
7	[YJT] YJT 6002	Wave spring washers for mechanical and electronic View Suppliers
8	[IS] IS 6735 - 1994 (R2004)	Spring Lock Washers