DISK LOCK WASHERS 
2 
VIBRATION PROOF LOCK WASHERS 
FOR USE WITH GRADE 5 & GRADE 8 BOLTS 
Zinc & Yellow Chromate Plated 
Bolt Size 
O.D. 
Part # 
Qty 
3/16” (5mm) 
11/32” 
50 (25 pr) 
1/4” (6mm) 
27/64” 
50 (25 pr) 
5/16” (8mm) 
17/32” 
50 (25 pr) 
3/8” (10mm) 
21/32” 
50 (25 pr) 
7/16” (11mm) 
23/32” 
30 (15 pr) 
1/2” (12mm) 
49/64” 
20 (10 pr) 
These washers have cams or wedges on one 
9/16” (14mm) 
29/32” 
20 (10 pr) 
side, with a lead angle greater than a thread 
5/8” (16mm) 
1” 
20 (10 pr) 
angle, and radial teeth or ribs on the other side. 
3/4” (19mm) 
1-7/32” 
10 (5 pr) 
The washers are intstalled cam face to cam face. 
1” (25mm) 
1-17/32” 
10 (5 pr) 
When tightening the fastener to preload, the teeth 
penetrate and seat against the joint material and 
the nut and/or fastener head. When subjected to 
» 
Carbon Steel. 
vibration the interacting cams create a wedge 
» 
Through Hardened: Min. 44HRC, Max. 51 
action which prevents the fastener from vibrating 
HRC. 
loose. 
X-WASHERS 
SPLIT RETAINING RINGS 
Plating: Zinc 
“A” 
“C” 
“D” 
“E” 
“F” 
Thickness 
Part # 
Qty 
.086 
.320 
.406 
.210 
.406 
.025 
50 
.098 
.364 
.490 
.297 
.475 
.055 
50 
.130 
.364 
.490 
.297 
.475 
.055 
50 
.164 
.523 
.687 
.422 
.665 
.065 
50 
.190 
.593 
.745 
.437 
.730 
.065 
25 
.222 
.622 
.776 
.469 
.775 
.075 
25 
.256 
.698 
.905 
.500 
.890 
.075 
25 
.285 
.822 
.986 
.563 
.984 
.075 
25 
.317 
.872 
1.100 
.609 
1.078 
.089 
25 
.381 
1.060 
1.297 
.797 
1.281 
.089 
10 
2-23 
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