Description:

Similar to a regular split lock washer, but with a greater outside diameter and thickness.

 

Advantages:

The increased bearing area makes this suitable for applications involving higher tightening torques.

 

Lockwashers, Split Heavy Pattern

 

 

HEAVY SPLIT HELICAL SPRING LOCK WASHERS ASME B18.21.1-1999
Nominal Washer Size
 A
B
(T+t)
2
 W
Inside Diameter Outside Diameter Mean Section Thickness Section Width
Max Min Max Min Min
#10
0.190
0.200
0.193
0.350
0.056
0.070
#12
0.216
0.227
0.220
0.391
0.063
0.077
1/4
0.250
0.262
0.254
0.491
0.077
0.110
5/16
0.312
0.326
0.317
0.596
0.097
0.130
3/8
0.375
0.390
0.380
0.691
0.115
0.145
7/16
0.438
0.455
0.443
0.787
0.133
0.160
1/2
0.500
0.518
0.506
0.883
0.151
0.176
9/16
0.562
0.582
0.570
0.981
0.171
0.193
5/8
0.625
0.650
0.635
1.093
0.189
0.210
11/16
0.688
0.713
0.698
1.192
0.207
0.227
3/4
0.750
0.775
0.760
1.291
0.226
0.244
13/16
0.812
0.843
0.824
1.391
0.246
0.262
7/8
0.875
0.905
0.887
1.494
0.266
0.281
15/16
0.938
0.970
0.950
1.594
0.284
0.298
1"
1.000
1.042
1.017
1.705
0.306
0.319
1-1/16
1.062
1.107
1.080
1.808
0.326
0.338
1-1/8
1.125
1.172
1.144
1.909
0.345
0.356
1-3/16
1.188
1.237
1.208
2.008
0.364
0.373
1-1/4
1.250
1.302
1.271
2.113
0.384
0.393
1-5/16
1.312
1.366
1.334
2.211
0.403
0.410
1-3/8
1.375
1.432
1.398
2.311
0.422
0.427
1-7/16
1.438
1.497
1.462
2.406
0.440
0.442
1-1/2
1.500
1.561
1.525
2.502
0.458
0.458

 

 

 

 

 

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