Hillman Fasteners 270018 Flat Washer 1/2 Inch Uss 5 Lb Pack

Product Description

The HILLMAN FASTENERS 270018 is a 5-pound pack of 1/2-inch zinc-plated steel flat washers in a wide-pattern USS configuration. Each pack contains approximately 130 pieces, making it a practical bulk option for high-volume fastener work. The wide USS pattern provides a broader bearing surface compared to SAE washers, distributing load more effectively across the fastened material. These washers are suited for general-purpose mechanical and structural assembly where corrosion resistance is a baseline requirement. Licensed tradespeople and contractors working in plumbing, HVAC, electrical, and general construction will find this bulk pack efficient for job-site and shop use.

These flat washers are designed for use with 1/2-inch fasteners in a wide range of trade and construction applications. The USS wide-pattern sizing is commonly specified for wood-to-metal connections, equipment mounting, and structural fastening where the larger outer diameter helps prevent pull-through. The zinc plating provides a layer of corrosion protection suitable for indoor and dry-to-moderate-exposure environments. Sold in a 5-pound bulk pack, this format is well suited for contractors, maintenance technicians, and tradespeople who work through high quantities of hardware on ongoing jobs.

Key Features

• USS wide-pattern flat washer provides a larger bearing surface than SAE equivalents
• Zinc-plated steel construction offers baseline corrosion resistance
• 1/2-inch nominal size fits standard 1/2-inch fasteners
• Bulk 5-pound pack contains approximately 130 pieces
• General-purpose design suitable for mechanical, structural, and trade applications

Compatibility

Designed for use with 1/2-inch bolts, screws, and threaded fasteners in standard USS wide-pattern flat washer applications across mechanical, structural, and general trade assemblies.

Installation Notes

Flat washers should be installed between the fastener head or nut and the mating surface to distribute clamping load. Ensure the washer is seated flush and concentric with the fastener before torquing. Zinc-plated washers are not recommended for prolonged direct exposure to moisture, chemicals, or outdoor environments where a higher-grade corrosion protection may be required per applicable codes.