Stewart Fastener J50WUSSZ 1/2 in Uss Flat Washers Zinc 100 Pack

Product Description

The STEWART FASTENER J50WUSSZ is a zinc-plated USS flat washer sized for 1/2 inch fasteners, sold in a jar of 100 pieces per unit. USS flat washers feature a larger outer diameter than SAE-pattern washers, spreading load across a wider bearing surface to reduce fastener pull-through and protect the material beneath. The zinc plating provides a baseline level of corrosion resistance suitable for general indoor and light outdoor use. Each jar contains 100 washers, making this a practical choice for stocking a service vehicle, shop, or job-site parts inventory.

USS flat washers in this size see routine use across HVAC, plumbing, electrical, and general mechanical installations wherever a 1/2 inch bolt or threaded rod requires a broader seating surface. Common applications include equipment mounting, ductwork support hardware, pipe hanger assemblies, panel mounting, and structural connections on light commercial and residential projects. The jar packaging keeps washers contained and organized on a busy job site.

Key Features

• USS pattern outer diameter for wider load distribution compared to SAE washers
• Zinc plating for corrosion resistance in general service environments
• Sized for 1/2 inch fasteners
• 100 pieces per jar for efficient bulk stocking
• Suitable for HVAC, plumbing, electrical, and mechanical fastening applications

Compatibility

Designed for use with standard 1/2 inch bolts, hex cap screws, carriage bolts, and threaded rod in USS flat washer applications across residential and light commercial installations.

Installation Notes

USS flat washers are installed by general contractors, HVAC technicians, plumbers, and electricians as part of standard bolted connections. Place the washer between the fastener head or nut and the mating surface before tightening. Verify that the washer material and plating are appropriate for the service environment, particularly in wet or corrosive locations where a higher-grade plating or stainless material may be required by code.

Technical Specifications

• Bolt Size: 1/2 inch
• Washer Pattern: USS
• Finish: Zinc Plated
• Quantity per Jar: 100
• UPC: 662352112154

Standard Information

• Brand: STEWART FASTENER
• Manufacturer Part Number: J50WUSSZ