64304075 - 1/4-Inch Plain Flat Washer, Steel Zinc Plated (0.250 ID)

Essential Industrial Fastening Hardware

The 1/4-Inch Plain Steel Flat Washer (0.250 ID) is a fundamental component for any industrial maintenance, repair, and operations (MRO) inventory. Designated as "WSR PLAIN STLZPC .250", this hardware essential is designed to provide a stable bearing surface for nuts and bolts, ensuring that the clamping force is distributed evenly across the mating surface. This distribution is critical in preventing damage to the substrate, particularly when fastening into softer materials or when the hole is slightly oversized. The washer features a standard 0.250-inch inner diameter, making it perfectly sized for 1/4-inch bolts and screws, which are ubiquitous in machinery and structural assemblies.

Constructed from high-quality steel, this washer offers the tensile strength and durability required for standard mechanical applications. To combat environmental degradation, the steel is finished with a Zinc Plating (Clear). This "STLZPC" finish not only gives the washer a clean, bright appearance but, more importantly, provides a sacrificial layer of protection against oxidation and rust. While not intended for harsh marine environments, the zinc plating offers excellent corrosion resistance for indoor and general outdoor applications, significantly extending the service life of the assembly compared to bare metal hardware.

In the context of general industry, having a reliable stock of 1/4-inch flat washers is non-negotiable. They are used in everything from assembling shelving units and securing electrical panels to repairing conveyor systems and mounting motors. Their plain, flat profile ensures they fit into tight spaces without interfering with moving parts, making them a versatile choice for engineers and technicians alike. Whether you are performing routine maintenance or assembling new equipment, this zinc-plated steel washer delivers the performance and reliability expected in professional settings.

Key Benefits:

• Surface Protection: Prevents bolt heads and nuts from digging into the work surface.


• Load Distribution: Spreads the clamping force over a larger area for a more secure hold.


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


• Universal Fit: Standard 0.250" ID fits all standard 1/4" fasteners.