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18-8 SS Split Lock Washer

18-8 Stainless Steel 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. 18-8 stainless steel fasteners are commonly used in applications that require general atmospheric corrosion resistance, such as chemical and food processing equipment.

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Governing Standards
Dimensional Specifications

Dimensional Specifications

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
#2	0.0860	0.0940	0.0880	0.1720	0.0200	0.0350	0.0240
#3	0.0990	0.1070	0.1010	0.1950	0.0250	0.0400	0.0280
#4	0.1120	0.1200	0.1140	0.2090	0.0250	0.0400	0.0280
#5	0.1250	0.1330	0.1270	0.2360	0.0310	0.0470	0.0330
#6	0.1380	0.1480	0.1410	0.2500	0.0310	0.0470	0.0330
#8	0.1640	0.1740	0.1670	0.2930	0.0400	0.0550	0.0380
#10	0.1900	0.2000	0.1930	0.3340	0.0470	0.0620	0.0430
#12	0.2160	0.2270	0.2200	0.3770	0.0560	0.0700	0.0490
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

All dimensions are in inches.

18-8 SS Split Lock Washer

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Diameter Inside Diameter Outside Diameter Thickness Item # Availability Price Quantity UOM

3/8

0.3770

0.6800

0.0940

WLS4037

In Stock

$0.06052/EA

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3/8 18-8 STAINLESS STEEL SPLIT LOCK WASHER

$0.06052/EA

Qty

In Stock

Product Detail

Quantity	Price
Quantity	Price
1	$0.06052/EA
1650	$0.05679/EA
6600	$0.05039/EA
29680	$0.03383/EA

7/16

0.4400

0.7760

0.1090

WLS4043

In Stock

$0.09156/EA

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7/16 18-8 STAINLESS STEEL SPLIT LOCK WASHER

$0.09156/EA

Qty

In Stock

Product Detail

Quantity	Price
Quantity	Price
1	$0.09156/EA
1060	$0.08609/EA
4210	$0.07609/EA
18950	$0.05213/EA

3/4

0.7530

1.2650

0.1880

WLS4075

In Stock

$0.51787/EA

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3/4 18-8 STAINLESS STEEL SPLIT LOCK WASHER

$0.51787/EA

Qty

In Stock

Product Detail

Quantity	Price
Quantity	Price
1	$0.51787/EA
250	$0.48814/EA
990	$0.4306/EA
4460	$0.3013/EA

18-8 SS Split Lock Washer

Technical Data

Governing Standards

Governing StandardsSplit Lock Washer

Dimensional Specifications

Dimensional SpecificationsSplit Lock Washer

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3/8 18-8 STAINLESS STEEL SPLIT LOCK WASHER

7/16 18-8 STAINLESS STEEL SPLIT LOCK WASHER

3/4 18-8 STAINLESS STEEL SPLIT LOCK WASHER