Flat Washers (¼”, ⅜”)

Flat Washers (Assorted Sizes 1/4″ and 3/8″)

Flat Washers – Essential Load Distribution and Surface Protection for Fasteners

Flat washers are a fundamental component in achieving secure and stable bolted assemblies. These washers are constructed from durable zinc-plated steel, providing essential corrosion resistance for long-term use in various environments. Their primary function is to distribute the clamping force exerted by a nut or bolt head over a significantly wider area, which prevents the fastener head from embedding itself into soft substrates (like wood) and protects finished surfaces from damage.

Available in the popular 1/4 inch and 3/8 inch imperial diameters, these washers are highly versatile for a vast array of small to medium-sized applications in construction, mechanical repair, and woodworking.

Key Benefits

• Load Distribution: Spreads the fastener’s clamping load over a large area, preventing crushing of soft materials or deformation of the fixture.

• Surface Protection: Acts as a smooth bearing surface, preventing the fastener head from digging into or damaging the joint material.

• Corrosion Resistance: Zinc plating protects the steel from rust and weathering.

• Size Versatility: Available in 1/4″ and 3/8″ diameters to fit common small and medium-sized bolts and screws.

• Shimming and Spacing: Useful for adjusting gaps, leveling components, and ensuring alignment in an assembly.

Technical Specifications

• Product Type: Flat Washer / Plain Washer

• Sizes Available: 1/4 inch and 3/8 inch (Inner Diameter)

• Material: Steel

• Design: Flat, Circular Ring

• Application: Load Distribution, Spacing, Surface Protection

• Grade: Utility/Mechanical/Construction

Perfect For

• General construction, securing bolts to timber, and post mounting.

• Automotive and machinery assembly where fasteners are subjected to vibration.

• Plumbing applications (often used as a backing for rubber seals) and general household repair.

• Protecting the integrity of materials when tightening hex nuts or bolts.

Application Instructions

• Placement: Place the washer beneath the component you rotate (either the nut or the bolt head).

• Tightening: Tighten the fastener to the proper torque specification.

• Safety: Use in conjunction with a lock washer (split ring or star) for joints subjected to heavy vibration.

• Caution: Do not use on highly acidic or caustic chemical applications unless specified.

Pro Tips

• Always choose a washer with an inner diameter that is only slightly larger than the bolt diameter for a snug fit.

• When using a lock washer (split ring), a flat washer should be placed underneath it to prevent the lock washer from damaging the bearing surface.

• Store unused washers in a dry environment to maintain the integrity of the zinc plating.

• For exterior use, ensure the wood is treated or sealed to prevent moisture retention around the washer.

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