Products
Grade 8 Washers
Grade 8 USS
Grade 8 washers are used in high strength applications when using grade 5, grade 8 and better bolts. Made from Domestic medium carbon steel, then quenched and tempered to R/C 38-45. Grade 8 washers are stocked in Rohs compliant electro zinc and yellow trivalent finish. Parts are baked for relief of hydrogen embrittlement. Stocked in sizes from 1/4″ through 1-1/2″. Parts are also marked with corresponding bolt size and pattern type such as “S” for SAE, “U” for USS. Domestic material certifications are included with your purchase.
DOMESTIC HARDENED U.S.S. GRADE 8 ROHS COMPLIANT WASHERS
Bolt Size
OUTSIDE DIAMETER
INSIDE DIAMETER
THICKNESS
APPROX. NET WT. EACH
PCS/CARTON
1/4
.727/.749
.307/.327
.051/.080
0.006
6000 - 1/8 keg
5/16
.868/.905
.370/.390
.064/.104
0.01
4000 - 1/8 keg
3/8
.993/1.030
.433/.453
.064/.104
0.0138
3200 - 1/8 keg
7/16
1.243/1.280
.495/.515
.064/.104
0.021
1500 - 1/8 keg
1/2
1.368/1.405
.557/.577
.086/.132
0.0333
1200 - 1/8 keg
9/16
1.462/1.499
.620/.640
.086/.132
0.0377
1100 - 1/8 keg
5/8
1.743/1.780
.681/.718
.108/.160
0.0651
600 - 1/8 keg
3/4
1.993/2.030
.805/.842
.122/.177
0.0959
400 - 1/8 keg
7/8
2.243/2.280
.931/.968
.136/.192
0.1278
300 - 1/8 keg
1
2.493/2.530
1.055/1.092
.136/.192
0.16687
200 - 1/8 keg
1 1/8
2.743/2.780
1.243/1.280
.136/.192
0.1896
175 - 1/8 keg
1 1/4
2.993/3.030
1.368/1.405
.136/.192
0.2246
125 - 1/8 keg
1 1/2
3.491/3.545
1.615/1.670
.153/.213
0.3695
75 - 1/8 keg