Value Collection 31WFAL Flat Washer 5/16 Inch Aluminum

Product Description

The VALUE COLLECTION 31WFAL is a standard flat washer machined from aluminum, sized for 5/16-inch screws and fasteners. With an inside diameter of 0.319 inches, an outside diameter of 0.750 inches, and a thickness of 0.061 inches, this washer distributes clamp load across the bearing surface and helps prevent fastener pull-through on softer substrates. Aluminum construction keeps weight low and provides natural resistance to corrosion in wet or chemically active environments. This part follows inch-system dimensional standards and is suited for general mechanical assembly, HVAC panel work, light structural connections, and electrical enclosure fabrication where a non-ferrous fastener component is required.

This washer is used wherever a 5/16-inch fastener requires a wider bearing surface or a non-ferrous, lightweight washer is specified. Common applications include HVAC equipment panels and brackets, electrical enclosures, plumbing fixture mounting, and general industrial or maintenance assembly. Aluminum is often specified when galvanic compatibility with aluminum structural members is a concern or when weight reduction is a factor in the assembly design.

Key Features

• Aluminum construction provides corrosion resistance and low weight
• Inside diameter of 0.319 inches fits 5/16-inch screws and bolts
• Outside diameter of 0.750 inches distributes load across the bearing surface
• Thickness of 0.061 inches meets standard flat washer profile
• Inch-system dimensions for compatibility with standard fastener hardware
• Non-ferrous material reduces galvanic corrosion risk in aluminum assemblies

Compatibility

Designed for use with 5/16-inch screw and bolt fasteners in standard inch-system applications across HVAC, electrical, plumbing, and general mechanical assemblies.

Installation Notes

Install using standard hand tools; seat the washer flat against the bearing surface before torquing the fastener. Power down or de-energize any electrical enclosure before performing fastener work inside live panels. Follow applicable codes and manufacturer torque guidelines for the fastener and substrate being used. Avoid mixing aluminum hardware with dissimilar metals in highly corrosive environments without appropriate isolation measures.