Value Collection 38892 Flat Washer 5/16 in Copper 100 Pack

Product Description

The VALUE COLLECTION 38892 is a standard flat washer designed for use with 5/16 inch screws. Made from copper with a plain finish, this washer distributes fastener load across a wider surface area to protect the mating material and reduce the risk of pull-through. The 0.336 inch inside diameter fits snugly over a 5/16 inch fastener, while the 0.750 inch outside diameter provides adequate bearing surface. At 0.064 inches thick, this washer conforms to standard flat washer geometry. Copper construction offers natural corrosion resistance and is appropriate for applications where galvanic compatibility with copper fasteners or fittings is required. Sold in a package of 100 pieces.

This washer is suited for plumbing, electrical, and HVAC applications where copper hardware is specified or preferred. Copper flat washers are commonly used in electrical grounding assemblies, plumbing rough-in work, and general mechanical fastening where steel hardware is not acceptable due to corrosion concerns or material compatibility requirements. The plain finish is uncoated, making it appropriate where conductivity must be maintained or where additional coatings would interfere with the joint.

Key Features

• Copper construction provides corrosion resistance and electrical conductivity
• Plain finish preserves natural copper surface for conductivity-sensitive applications
• 0.336 inch inside diameter sized for 5/16 inch screw fitment
• 0.750 inch outside diameter distributes clamp load across the bearing surface
• 0.064 inch thickness meets standard flat washer dimensional requirements
• Packaged in quantities of 100 for shop and service use

Compatibility

Designed as a standard flat washer for use with 5/16 inch screws and bolts in inch-measurement fastening applications.

Installation Notes

Flat washers are installed between the fastener head or nut and the mating surface prior to final torque. Ensure the washer inside diameter clears the fastener shank freely before assembly. In electrical grounding or bonding applications, follow NEC requirements for hardware material and installation method. Do not mix copper hardware with incompatible metals in wet environments where galvanic corrosion could compromise the joint.