Value Collection 3BWFL904 Flat Washer 1/4 in Silicon Bronze

Product Description

The VALUE COLLECTION 3BWFL904 is a standard flat washer sized for 1/4 inch screws, manufactured from silicon bronze. Flat washers of this type distribute clamp load across the fastener bearing surface, reducing stress on the mating material and helping prevent loosening caused by vibration or thermal cycling. Silicon bronze offers strong corrosion resistance in marine, wet, and chemically active environments where steel hardware would degrade quickly. The 5/16 inch inside diameter fits over 1/4 inch fastener shanks with clearance, the 11/16 inch outside diameter provides a broad bearing face, and the thickness is 1-1/16 inches. This washer is installed by plumbers, marine mechanics, and general trade professionals working with corrosion-sensitive assemblies.

This flat washer is suited for use in marine plumbing, coastal construction, electrical enclosures, and other applications where moisture, salt air, or chemical exposure rules out standard steel or zinc-plated hardware. It is appropriate for both structural and non-structural fastening applications requiring a corrosion-resistant, non-sparking alloy. Silicon bronze washers are commonly specified in bronze or copper alloy fastener assemblies to maintain galvanic compatibility and avoid accelerated corrosion at the joint.

Key Features

• Silicon bronze construction provides high corrosion resistance in marine and wet environments
• 5/16 inch inside diameter fits 1/4 inch screw shanks with standard clearance
• 11/16 inch outside diameter distributes load across a broad bearing surface
• 1-1/16 inch thickness provides rigid support under clamp load
• Non-sparking alloy suitable for use near flammable materials
• Inch-system dimensions for compatibility with standard inch-series fastener assemblies

Compatibility

Designed as a standard flat washer for use with 1/4 inch screw fasteners in inch-series assemblies requiring silicon bronze hardware.

Installation Notes

Install using standard hand tools; no special tooling is required for flat washer placement. Ensure the inside diameter slips freely over the fastener shank before tightening. When assembling mixed-alloy joints, verify galvanic compatibility of all contact metals to avoid accelerated corrosion. Inspect washers for deformation or cracking before reuse in critical joints.