Split Lock Washer, Galvanized

Low carbon split lock washers are used under bolt heads or nuts to increase the hold of the fastener or to increase the bearing surface. Split lock washers are helical-shaped split rings. When fastened, the two ends exert a spring force on the fastener to create increased friction and resistance to motion. Dimensional specifications are governed by ASME B18.21.1. Available in hot dip galvanized finish, which provides a corrosion resistant zinc coating.

Technical Data

Governing StandardsSplit Lock Washer

ASME B18.21.1

Covers the dimensional requirements, physical properties, and related test methods for helical spring-lock washers (#0 through 3 inches), tooth-lock washers (#2 through 1 ¼ inches), and plain washers (#0 through 3 inches).

Dimensional SpecificationsSplit Lock Washer

Per ASME B18.21.1-2009
Size	Nominal	A		B	T	W	BW
		Inside Diameter		Outside Diameter	Mean Section Thickness	Section Width	Bearing Width
		Max	Min	Max	Min	Min	Min
1/4	0.2500	0.2600	0.2520	0.4870	0.0620	0.1090	0.0760
5/16	0.3125	0.3220	0.3140	0.5830	0.0780	0.1250	0.0870
3/8	0.3750	0.3850	0.3770	0.6800	0.0940	0.1410	0.0990
7/16	0.4375	0.4500	0.4400	0.7760	0.1090	0.1560	0.1090
1/2	0.5000	0.5120	0.5020	0.8690	0.1250	0.1710	0.1200
9/16	0.5625	0.5740	0.5640	0.9650	0.1410	0.1880	0.1320
5/8	0.6250	0.6410	0.6280	1.0730	0.1560	0.2090	0.1420
3/4	0.7500	0.7660	0.7530	1.2650	0.1880	0.2340	0.1640
7/8	0.8750	0.8940	0.8780	1.4590	0.2190	0.2660	0.1860
1	1.0000	1.0240	1.0030	1.6560	0.2500	0.2970	0.2080
1 1/8	1.1250	1.1530	1.1290	1.8470	0.2810	0.3280	0.2300
1 1/4	1.2500	1.2800	1.2540	2.0360	0.3120	0.3590	0.2510
1 3/8	1.3750	1.4080	1.3790	2.2190	0.3440	0.3910	0.2740
1 1/2	1.5000	1.5340	1.5040	2.4190	0.3750	0.4220	0.2950
1 5/8	1.6250	1.6630	1.6330	2.5530	0.3890	0.4240	0.2970
1 3/4	1.7500	1.7890	1.7580	2.6790	0.3890	0.4240	0.2970
1 7/8	1.8750	1.9140	1.8830	2.8110	0.4220	0.4270	0.2990
2	2.0000	2.0390	2.0080	2.9360	0.4220	0.4270	0.2990
2 1/4	2.2500	2.2930	2.2620	3.2210	0.4400	0.4420	0.3090
2 1/2	2.5000	2.5430	2.5120	3.4710	0.4400	0.4420	0.3090
2 3/4	2.7500	2.7930	2.7620	3.8240	0.4580	0.4910	0.3440
3	3.0000	3.0430	3.0120	4.0740	0.4580	0.4910	0.3440

All dimensions are in inches.

Split Lock Washer, Galvanized

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Diameter	Inside Diameter	Outside Diameter	Thickness	Item #	Availability	Price	Quantity
1/4	0.2520	0.4870	0.0620	WLGA025	In Stock	$0.02428/EA	EA	EA
5/16	0.3140	0.5830	0.0780	WLGA031	In Stock	$0.05129/EA	EA	EA
3/8	0.3770	0.68	0.0940	WLGA037	In Stock	$0.07479/EA	EA	EA
7/16	0.44	0.7760	0.1090	WLGA043	In Stock	$0.06918/EA	EA	EA
1/2	0.5020	0.8690	0.1250	WLGA050	In Stock	$0.1308/EA	EA	EA
5/8	0.6280	1.0730	0.1560	WLGA062	In Stock	$0.23464/EA	EA	EA
3/4	0.7530	1.2650	0.1875	WLGA075	In Stock	$0.3571/EA	EA	EA
7/8	0.8780	1.4590	0.2190	WLGA087	In Stock	$0.52554/EA	EA	EA
1	1.0030	1.6560	0.25	WLGA100	In Stock	$0.74572/EA	EA	EA
1 1/8	1.1290	1.8470	0.2810	WLGA112	In Stock	$1.00806/EA	EA	EA
1 1/4	1.2540	2.0360	0.3120	WLGA125	In Stock	$1.44795/EA	EA	EA
1 3/8	1.3790	2.2190	0.3440	WLGA137	In Stock	$1.56556/EA	EA	EA
1 1/2	1.5040	2.4190	0.3750	WLGA150	In Stock	$1.73487/EA	EA	EA
1 3/4	1.7580	2.6790	0.3890	WLGA175	In Stock	$3.36086/EA	EA	EA
2	2.0080	2.9360	0.4220	WLGA200	In Stock	$3.91246/EA	EA	EA

Split Lock Washer, Galvanized

Technical Data

Tab 1

Governing StandardsSplit Lock Washer

Tab 4

Dimensional SpecificationsSplit Lock Washer

Product Specification

Grade

Diameter

Thickness

Outside Diameter

Inside Diameter