Value Collection 31377 Sae Flat Washer 5/16 Inch Steel Zinc

Product Description

The VALUE COLLECTION 31377 is a steel SAE flat washer sized for 5/16 inch screws and finished with a zinc plating for basic corrosion resistance. SAE flat washers follow Society of Automotive Engineers dimensional standards, which specify a tighter outside diameter relative to screw size compared to USS-pattern washers. This washer measures 11/32 inches inside diameter, 11/16 inches outside diameter, and 1/16 inch thick. It is used across mechanical assembly, structural fastening, and equipment maintenance applications where a standard-duty load-distributing washer is required. Electricians, plumbers, HVAC technicians, and general maintenance trades all reach for SAE flat washers in everyday panel, bracket, and equipment fastening work.

This washer fits 5/16 inch fastener applications in both residential and light commercial settings. Typical uses include securing equipment panels, mounting brackets, pipe hangers, and conduit supports where a flat bearing surface is needed between a fastener head or nut and the substrate. The zinc plating provides a degree of protection in dry and mildly humid indoor environments. This product is sold individually but carries a minimum order quantity of 250 pieces, making it appropriate for shop stock, service van inventory, or small-batch production use.

Key Features

• SAE dimensional standard — tighter OD profile suits close-clearance fastening applications
• Steel construction provides reliable load distribution under standard torque loads
• Zinc-plated finish offers baseline corrosion resistance for indoor and dry environments
• 5/16 inch screw size with 11/32 inch ID allows smooth passage over standard 5/16 inch fastener shanks
• 1/16 inch thickness keeps the washer low-profile for shallow counterbore or tight stack-up situations

Compatibility

Designed as a standard SAE flat washer for use with 5/16 inch screws and bolts in general mechanical, electrical, plumbing, and HVAC fastening applications.

Installation Notes

Install with hand tools; no special tooling is required beyond the appropriate wrench or driver for the mating fastener. Ensure the washer is seated flat against the bearing surface before applying final torque to the fastener. For outdoor or high-moisture environments, a stainless or hot-dip galvanized washer is a more appropriate selection than zinc-plated steel. Consult applicable codes such as NEC or IPC for fastener and hardware material requirements in specific trade installations.