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5/16 Split Lock Washer

Selected Split Helical Lock Washer BlackSplit Lock Washer
Split Helical Lock Washer BlackSplit Lock Washer

Product Specification

Diameter
5/16
Grade
Carbon Steel, Grade 2
Inside Diameter
0.3140
Outside Diameter
0.5830
Thickness
0.0780
Material
Steel
Finish
Black
Country of Origin
Unrestricted Origin
Weight
0.004060

Governing Standards

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 Specifications

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
#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
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.