Black Luster Flat Washers
These USS & SAE steel washers provide a generous bearing surface to distribute fastener loads, or cover large
clearance holes. Black Luster Coating provides superior corrosion resistance
than black oxide and zinc plated finishes with best in class decorative finish. Excellent weatherability
and chemical resistance while maintaining functional thread engagement.
Salt spray 500 hours per ASTM B117.
Min / max operating temperature range: -40F to +400F
USS Washers
|
Part Number |
Screw Size |
ID |
OD |
Min/Max Thickness |
|
4001 |
1/4" |
5/16" |
3/4" |
.051"-.080" |
|
4002 |
5/16" |
3/8" |
7/8" |
.064"-.104" |
|
4003 |
3/8" |
7/16" |
1" |
.064"-.104" |
|
4004 |
1/2" |
9/16" |
1-3/8" |
.086"-.132" |
|
4005 |
5/8" |
11/16" |
1-3/4" |
.108"-.160" |
|
4006 |
3/4" |
13/16" |
2" |
.122"-.177" |
|
4007 |
7/8" |
15/16" |
2-1/4" |
.136"-.192" |
|
4008 |
1" |
1-1/16" |
2-1/2" |
.136"-.192" |
SAE Washers
|
Part Number |
Screw Size |
ID |
OD |
Min/Max Thickness |
|
4101 |
1/4" |
9/32" |
5/8" |
.051"-.080" |
|
4102 |
5/16" |
11/32" |
11/16" |
.051"-.080" |
|
4103 |
3/8" |
13/32" |
13/16" |
.051"-.080" |
|
4104 |
1/2" |
17/32" |
1-1/16" |
.074"-.121" |
|
4105 |
5/8" |
21/32" |
1-5/16" |
.074"-.121" |
|
4106 |
3/4" |
13/16" |
1-15/32" |
.108"-.160" |
|
4107 |
7/8" |
15/16" |
1-3/4" |
.108"-.160" |
|
4108 |
1" |
1-1/16" |
2" |
.108"-160" |
