- Hardness: HRC 38-45
- Material: Medium Carbon Steel
- Material Grade: 8
- Outside Diameter: 1-1/4 in
- Type: Hardened
- Nominal Size: 7/16 in
- Inside Diameter: 1/2 in
- Thickness: 0.064 to 0.08 in
- Surface Treatment: Zinc Yellow
- Item Features
- Standards
- USS flat washers give tightness to a joint, help prevent leakage and distribute pressure under the head of a nut or bolt to prevent fastener from damaging materials
- Hardware is constructed of high quality steel for long lasting durability
ASME B18.21.1-1999|ASME B18.22.1 - 1965