Split Lock Washer, Galvanized
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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.

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

Split Lock Washer dimensions
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
  1. All dimensions are in inches.
Split Lock Washer, Galvanized
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Diameter Inside Diameter Outside Diameter Thickness Item # Availability Price Quantity UOM
1/4 0.2520 0.4870 0.0620 WLGA025 In Stock $0.02369/EA EA
5/16 0.3140 0.5830 0.0780 WLGA031 In Stock $0.05112/EA EA
3/8 0.3770 0.68 0.0940 WLGA037 3-5 Working Days $0.06382/EA EA
7/16 0.44 0.7760 0.1090 WLGA043 In Stock $0.06918/EA EA
1/2 0.5020 0.8690 0.1250 WLGA050 In Stock $0.13936/EA EA
5/8 0.6280 1.0730 0.1560 WLGA062 In Stock $0.24238/EA EA
3/4 0.7530 1.2650 0.1875 WLGA075 In Stock $0.45379/EA EA
7/8 0.8780 1.4590 0.2190 WLGA087 In Stock $0.52611/EA EA
1 1.0030 1.6560 0.25 WLGA100 In Stock $0.73004/EA EA
1 1/8 1.1290 1.8470 0.2810 WLGA112 In Stock $1.00806/EA EA
1 1/4 1.2540 2.0360 0.3120 WLGA125 In Stock $1.44795/EA EA
1 3/8 1.3790 2.2190 0.3440 WLGA137 In Stock $1.56556/EA EA
1 1/2 1.5040 2.4190 0.3750 WLGA150 In Stock $1.73496/EA EA
1 3/4 1.7580 2.6790 0.3890 WLGA175 In Stock $3.36086/EA EA
2 2.0080 2.9360 0.4220 WLGA200 In Stock $3.91246/EA EA