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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.

Products
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

$0.02011/EA

See Quantity Discounts

#6 18-8 STAINLESS STEEL SPLIT LOCK WASHER

$0.02011/EA

Qty

In Stock

Product Detail

Quantity	Price
Quantity	Price
1	$0.02011/EA
16510	$0.01884/EA
66010	$0.01677/EA
264030	$0.01112/EA

0.1670

0.2930

0.0400

WLS4 8

In Stock

$0.00903/EA

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#8 18-8 STAINLESS STEEL SPLIT LOCK WASHER

$0.00903/EA

Qty

In Stock

Product Detail

Quantity	Price
Quantity	Price
1	$0.00903/EA
9890	$0.00846/EA
39530	$0.00753/EA
158110	$0.00499/EA

#10

0.1930

0.3340

0.0470

WLS4 10

In Stock

$0.01095/EA

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#10 18-8 STAINLESS STEEL SPLIT LOCK WASHER

$0.01095/EA

Qty

In Stock

Product Detail

Quantity	Price
Quantity	Price
1	$0.01095/EA
6870	$0.01026/EA
27480	$0.00914/EA
109900	$0.00606/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

$0.02505/EA

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1/4 18-8 STAINLESS STEEL SPLIT LOCK WASHER

$0.02505/EA

Qty

In Stock

Product Detail

Quantity	Price
Quantity	Price
1	$0.02505/EA
2110	$0.02347/EA
8420	$0.0209/EA
33680	$0.01385/EA

5/16

0.3140

0.5830

0.0780

WLS4031

In Stock

$0.0638/EA

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5/16 18-8 STAINLESS STEEL SPLIT LOCK WASHER

$0.0638/EA

Qty

In Stock

Product Detail

Quantity	Price
Quantity	Price
1	$0.0638/EA
1220	$0.0598/EA
4880	$0.05317/EA
19490	$0.03543/EA

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

1/2

0.5020

0.8690

0.1250

WLS4050

In Stock

$0.10437/EA

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1/2 18-8 STAINLESS STEEL SPLIT LOCK WASHER

$0.10437/EA

Qty

In Stock

Product Detail

Quantity	Price
Quantity	Price
1	$0.10437/EA
770	$0.09821/EA
3050	$0.08678/EA
13700	$0.05979/EA

9/16

0.5640

0.9650

0.1410

WLS4056

In Stock

$0.44944/EA

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9/16 18-8 STAINLESS STEEL SPLIT LOCK WASHER

$0.44944/EA

Qty

In Stock

Product Detail

Quantity	Price
Quantity	Price
1	$0.44944/EA
540	$0.42289/EA
2140	$0.37367/EA
9630	$0.25744/EA

5/8

0.6280

1.0730

0.1560

WLS4062

In Stock

$0.23893/EA

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5/8 18-8 STAINLESS STEEL SPLIT LOCK WASHER

$0.23893/EA

Qty

In Stock

Product Detail

Quantity	Price
Quantity	Price
1	$0.23893/EA
420	$0.22505/EA
1650	$0.19858/EA
7420	$0.13787/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

7/8

0.8780

1.4590

0.2190

WLS4087

In Stock

$0.49479/EA

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7/8 18-8 STAINLESS STEEL SPLIT LOCK WASHER

$0.49479/EA

Qty

In Stock

Product Detail

Quantity	Price
Quantity	Price
1	$0.49479/EA
170	$0.4668/EA
660	$0.41141/EA
2970	$0.28962/EA

1.0030

1.6560

0.2500

WLS4100

In Stock

$1.39923/EA

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1 18-8 STAINLESS STEEL SPLIT LOCK WASHER

$1.39923/EA

Qty

In Stock

Product Detail

Quantity	Price
Quantity	Price
1	$1.39923/EA
120	$1.32084/EA
450	$1.16411/EA
2030	$0.82398/EA

1 1/8

1.1290

1.8470

0.2810

WLS4112

In Stock

$2.88851/EA

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

$2.88851/EA

Qty

In Stock

Product Detail

Quantity	Price
Quantity	Price
1	$2.88851/EA
80	$2.72669/EA
320	$2.40313/EA
1440	$1.70098/EA

1 1/4

1.2540

2.0360

0.3120

WLS4125

In Stock

$3.89735/EA

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

$3.89735/EA

Qty

In Stock

Product Detail

Quantity	Price
Quantity	Price
1	$3.89735/EA
60	$3.67901/EA
230	$3.24245/EA
1000	$2.29506/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

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Category

Outside Diameter

Diameter

Grade

Inside Diameter

Thickness

#4 18-8 STAINLESS STEEL SPLIT LOCK WASHER

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