Value Collection FWUIB031-100BX 5/16 in Flat Washer Brass 100pk

Product Description

The VALUE COLLECTION FWUIB031-100BX is a standard flat washer sized for 5/16 inch screws, manufactured from brass with a plain uncoated finish. Flat washers distribute load across a fastened joint, reduce surface damage under bolt heads and nuts, and help prevent loosening from vibration. The brass construction resists corrosion in wet or chemically active environments where steel hardware would degrade. With an inside diameter of 0.34 inches, an outside diameter of 0.75 inches, and a thickness of 0.062 inches, these washers meet standard dimensional requirements for 5/16 inch fastener assemblies. This box contains 100 washers. Plumbers, electricians, HVAC technicians, and general contractors regularly specify brass hardware when working near moisture or dissimilar metals.

These washers are suited for residential and light commercial applications where corrosion resistance and a non-magnetic, non-sparking material are required. Common install scenarios include pipe flange assemblies, electrical enclosure mounting, HVAC equipment panels, pool and spa equipment, and any fastener application where brass compatibility with the mating hardware is specified. The plain finish leaves the natural brass surface exposed, making these washers appropriate where uncoated hardware is required by spec or preference.

Key Features

• Brass construction provides corrosion resistance in wet and chemically active environments
• Plain finish with no coating or plating for applications requiring bare brass
• Standard flat washer geometry: 0.34 inches ID, 0.75 inches OD, 0.062 inches thick
• Sized for 5/16 inch screws and bolts
• Box quantity of 100 reduces reorder frequency on high-use fastener jobs
• Inch measurement system; compatible with standard SAE fastener assemblies

Compatibility

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

Installation Notes

Flat washers are installed by a wide range of trades including plumbers, electricians, and HVAC technicians. Place the washer over the fastener shank and seat it flush against the mating surface before tightening. Brass is a softer material than steel; avoid overtorquing, which can deform the washer and reduce clamping effectiveness. Inspect mating hardware material before use to confirm brass is appropriate for the assembly and will not create a problematic galvanic pairing.