Black Luster® Steel USS Washers
DESCRIPTION - These Black Luster®Steel USS Washers provide best in class decorative appearance and better corrosion resistance than black oxide and zinc plated finishes. Resistant to 1,000 hours of salt spray per ASTM B117*. Washers are primarily used to displace the load of a fastener head or a nut on a threaded joint. They can cover holes and act as spacers. These washers meet United States Standard specifications & generally have a larger ID and OD than SAE washers.
| Screw Size | Part No. | ID | OD | Min/Max Thickness |
|---|---|---|---|---|
| 1/4" | 4001 | .313" | .750" | .051"-.080" |
| 5/16" | 4002 | .375" | .875" | .064"-.104" |
| 3/8" | 4003 | .438" | 1.000" | .064"-.104" |
| 7/16” | 40035 | .500” | 1.250” | .064”-.104” |
| 1/2" | 4004 | .563" | 1.375" | .086"-.132" |
| 9/16” | 40045 | 1.469” | .625” | .086”-.132” |
| 5/8" | 4005 | .688" | 1.750" | .108"-.160" |
| 3/4" | 4006 | .813" | 2.000" | .122"-.177" |
| 7/8" | 4007 | .938" | 2.250" | .136"-.192" |
| 1" | 4008 | 1.063" | 2.500" | .136"-.192" |
| 1-1/8” | 4009 | 1.250” | 2.750” | .136”-.192” |
| 1-1/4” | 4010 | 1.375” | 3.000” | .136”-.192” |
| 1-3/8” | 4011 | 1.500” | 3.250” | .153”-.213” |
| 1-1/2” | 4012 | 1.625” | 3.500” | .153”-.213” |
| 1-5/8” | 4013 | 1.750” | 3.750” | .153”-.213” |
| 1-3/4” | 4014 | 1.875” | 4.000” | .153”-.213” |
| 1-7/8” | 4015 | 2.000” | 4.250” | .153”-.213” |
| 2” | 4016 | 2.125” | 4.500” | .153”-.213” |
| 2-1/4” | 4017 | 2.375” | 4.750” | .193”-.248” |
| 2-1/2” | 4018 | 2.625” | 5.000” | .210”-.280” |
| 2-3/4” | 4019 | 2.875” | 5.250” | .228-.310” |
| 3” | 4020 | 3.125” | 5.500” | .249”-.327” |
