Allstar Performance SAE pattern flat washer sized for 5/16in fasteners. Made from steel with a zinc oxide finish. Sold as a set of 25.
- Inside Diameter: 0.313 in
- Outside Diameter: 0.697 in
- Thickness: 0.065 in
- Material: Steel
- Finish: Zinc Oxide
- Pack Quantity: 25
Spec Sheet: Allstar Spec Sheet
Compatibility
Compatible with 5/16in SAE-pattern bolts and fasteners. SAE washers have a smaller outside diameter than USS washers of the same nominal thread size, so do not substitute an SAE washer where a USS or AN spec washer is required.
FAQ
What size fastener does this washer fit?
This washer fits a 5/16in SAE-pattern fastener, with an inside diameter of 0.313 in.
What is the outside diameter of this washer?
The outside diameter is 0.697 in, per the SAE washer pattern.
What material is this washer made from?
This washer is made from steel with a zinc oxide finish.
How many washers are included?
This listing includes a set of 25 washers.
Is this the same as a USS washer in this size?
No. SAE and USS washers in 5/16in have different outside diameters. This is an SAE-pattern washer; check the USS-specific listing if a USS washer is required.

