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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

0.1140

0.2090

0.0250

WLS4 4

In Stock

$0.01185/EA

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#4 18-8 STAINLESS STEEL SPLIT LOCK WASHER

$0.01185/EA

Qty

In Stock

Product Detail

Quantity	Price
Quantity	Price
1	$0.01185/EA
24760	$0.0111/EA
99010	$0.00989/EA
396040	$0.00655/EA

0.1410

0.2500

0.0310

WLS4 6

In Stock

$0.02019/EA

See Quantity Discounts

#6 18-8 STAINLESS STEEL SPLIT LOCK WASHER

$0.02019/EA

Qty

In Stock

Product Detail

Quantity	Price
Quantity	Price
1	$0.02019/EA
16510	$0.01891/EA
66010	$0.01684/EA
264030	$0.01116/EA

0.1670

0.2930

0.0400

WLS4 8

In Stock

$0.02035/EA

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#8 18-8 STAINLESS STEEL SPLIT LOCK WASHER

$0.02035/EA

Qty

In Stock

Product Detail

Quantity	Price
Quantity	Price
1	$0.02035/EA
9890	$0.01907/EA
39530	$0.01698/EA
158110	$0.01125/EA

#10

0.1930

0.3340

0.0470

WLS4 10

In Stock

$0.01079/EA

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#10 18-8 STAINLESS STEEL SPLIT LOCK WASHER

$0.01079/EA

Qty

In Stock

Product Detail

Quantity	Price
Quantity	Price
1	$0.01079/EA
6870	$0.01011/EA
27480	$0.009/EA
109900	$0.00596/EA

#12

0.2200

0.3770

0.0560

WLS4 12

In Stock

$0.01798/EA

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#12 18-8 STAINLESS STEEL SPLIT LOCK WASHER

$0.01798/EA

Qty

In Stock

Product Detail

Quantity	Price
Quantity	Price
1	$0.01798/EA
4500	$0.01685/EA
17990	$0.015/EA
71950	$0.00994/EA

1/4

0.2520

0.4870

0.0620

WLS4025

In Stock

$0.0266/EA

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1/4 18-8 STAINLESS STEEL SPLIT LOCK WASHER

$0.0266/EA

Qty

In Stock

Product Detail

Quantity	Price
Quantity	Price
1	$0.0266/EA
2110	$0.02492/EA
8420	$0.0222/EA
33680	$0.01471/EA

5/16

0.3140

0.5830

0.0780

WLS4031

In Stock

$0.05579/EA

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5/16 18-8 STAINLESS STEEL SPLIT LOCK WASHER

$0.05579/EA

Qty

In Stock

Product Detail

Quantity	Price
Quantity	Price
1	$0.05579/EA
1220	$0.05229/EA
4880	$0.0465/EA
19490	$0.03098/EA

3/8

0.3770

0.6800

0.0940

WLS4037

In Stock

$0.07627/EA

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3/8 18-8 STAINLESS STEEL SPLIT LOCK WASHER

$0.07627/EA

Qty

In Stock

Product Detail

Quantity	Price
Quantity	Price
1	$0.07627/EA
1650	$0.07157/EA
6600	$0.0635/EA
29680	$0.04264/EA

7/16

0.4400

0.7760

0.1090

WLS4043

In Stock

$0.09166/EA

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7/16 18-8 STAINLESS STEEL SPLIT LOCK WASHER

$0.09166/EA

Qty

In Stock

Product Detail

Quantity	Price
Quantity	Price
1	$0.09166/EA
1060	$0.08619/EA
4210	$0.07618/EA
18950	$0.05219/EA

1/2

0.5020

0.8690

0.1250

WLS4050

In Stock

$0.11534/EA

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1/2 18-8 STAINLESS STEEL SPLIT LOCK WASHER

$0.11534/EA

Qty

In Stock

Product Detail

Quantity	Price
Quantity	Price
1	$0.11534/EA
770	$0.10853/EA
3050	$0.0959/EA
13700	$0.06607/EA

9/16

0.5640

0.9650

0.1410

WLS4056

In Stock

$0.44245/EA

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9/16 18-8 STAINLESS STEEL SPLIT LOCK WASHER

$0.44245/EA

Qty

In Stock

Product Detail

Quantity	Price
Quantity	Price
1	$0.44245/EA
540	$0.41632/EA
2140	$0.36787/EA
9630	$0.25344/EA

5/8

0.6280

1.0730

0.1560

WLS4062

In Stock

$0.25267/EA

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5/8 18-8 STAINLESS STEEL SPLIT LOCK WASHER

$0.25267/EA

Qty

In Stock

Product Detail

Quantity	Price
Quantity	Price
1	$0.25267/EA
420	$0.23799/EA
1650	$0.21/EA
7420	$0.1458/EA

3/4

0.7530

1.2650

0.1880

WLS4075

In Stock

$0.51295/EA

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3/4 18-8 STAINLESS STEEL SPLIT LOCK WASHER

$0.51295/EA

Qty

In Stock

Product Detail

Quantity	Price
Quantity	Price
1	$0.51295/EA
250	$0.4835/EA
990	$0.42651/EA
4460	$0.29843/EA

7/8

0.8780

1.4590

0.2190

WLS4087

In Stock

$0.51984/EA

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7/8 18-8 STAINLESS STEEL SPLIT LOCK WASHER

$0.51984/EA

Qty

In Stock

Product Detail

Quantity	Price
Quantity	Price
1	$0.51984/EA
170	$0.49044/EA
660	$0.43224/EA
2970	$0.30429/EA

1.0030

1.6560

0.2500

WLS4100

In Stock

$0.84773/EA

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1 18-8 STAINLESS STEEL SPLIT LOCK WASHER

$0.84773/EA

Qty

In Stock

Product Detail

Quantity	Price
Quantity	Price
1	$0.84773/EA
120	$0.80024/EA
450	$0.70528/EA
2030	$0.49921/EA

1 1/8

1.1290

1.8470

0.2810

WLS4112

In Stock

$2.89448/EA

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1 1/8 18-8 STAINLESS STEEL SPLIT LOCK WASHER

$2.89448/EA

Qty

In Stock

Product Detail

Quantity	Price
Quantity	Price
1	$2.89448/EA
80	$2.73232/EA
320	$2.4081/EA
1440	$1.70449/EA

1 1/4

1.2540

2.0360

0.3120

WLS4125

In Stock

$3.89678/EA

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1 1/4 18-8 STAINLESS STEEL SPLIT LOCK WASHER

$3.89678/EA

Qty

In Stock

Product Detail

Quantity	Price
Quantity	Price
1	$3.89678/EA
60	$3.67846/EA
230	$3.24197/EA
1000	$2.29472/EA

1 3/8

1.3790

2.2190

0.3440

WLS4137

In Stock

$6.90412/EA

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1 3/8 18-8 STAINLESS STEEL SPLIT LOCK WASHER

$6.90412/EA

Qty

In Stock

Product Detail

Quantity	Price
Quantity	Price
1	$6.90412/EA
50	$6.51732/EA
190	$5.74396/EA
830	$4.06567/EA

1 1/2

1.5040

2.4190

0.3750

WLS4150

In Stock

$3.80578/EA

See Quantity Discounts

1 1/2 18-8 STAINLESS STEEL SPLIT LOCK WASHER

$3.80578/EA

Qty

In Stock

Product Detail

Quantity	Price
Quantity	Price
1	$3.80578/EA
40	$3.59256/EA
150	$3.16626/EA
640	$2.24113/EA

18-8 SS Split Lock Washer

Technical Data

Governing Standards

Governing StandardsSplit Lock Washer

Dimensional Specifications

Dimensional SpecificationsSplit Lock Washer

Grade

Diameter

Thickness

Outside Diameter

Inside Diameter

#4 18-8 STAINLESS STEEL SPLIT LOCK WASHER

#6 18-8 STAINLESS STEEL SPLIT LOCK WASHER

#8 18-8 STAINLESS STEEL SPLIT LOCK WASHER

#10 18-8 STAINLESS STEEL SPLIT LOCK WASHER

#12 18-8 STAINLESS STEEL SPLIT LOCK WASHER

1/4 18-8 STAINLESS STEEL SPLIT LOCK WASHER

5/16 18-8 STAINLESS STEEL SPLIT LOCK WASHER

3/8 18-8 STAINLESS STEEL SPLIT LOCK WASHER

7/16 18-8 STAINLESS STEEL SPLIT LOCK WASHER

1/2 18-8 STAINLESS STEEL SPLIT LOCK WASHER

9/16 18-8 STAINLESS STEEL SPLIT LOCK WASHER

5/8 18-8 STAINLESS STEEL SPLIT LOCK WASHER

3/4 18-8 STAINLESS STEEL SPLIT LOCK WASHER

7/8 18-8 STAINLESS STEEL SPLIT LOCK WASHER

1 18-8 STAINLESS STEEL SPLIT LOCK WASHER

1 1/8 18-8 STAINLESS STEEL SPLIT LOCK WASHER

1 1/4 18-8 STAINLESS STEEL SPLIT LOCK WASHER

1 3/8 18-8 STAINLESS STEEL SPLIT LOCK WASHER

1 1/2 18-8 STAINLESS STEEL SPLIT LOCK WASHER