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The VALUE COLLECTION 36771 is a USS flat washer designed for general fastening applications across mechanical, plumbing, HVAC, and electrical trade work. Sized for a 5/8 inch screw, this washer distributes load across a broader surface area than standard SAE washers, helping to prevent pull-through and surface damage on softer materials. It is manufactured from carbon steel with a Material Grade 9 rating and finished with a zinc yellow dichromate coating that provides moderate corrosion resistance for both indoor and light-duty outdoor use. Tradespeople and maintenance professionals reach for USS-series washers when working with structural fasteners, pipe hangers, equipment mounting, and general mechanical assembly.
This washer suits a wide range of residential and commercial installation scenarios where a 5/8 inch fastener requires a broader bearing surface. Common applications include equipment mounting pads, pipe hanger assemblies, HVAC unit installations, electrical panel anchoring, and general structural fastening. The USS specification calls for a larger outer diameter compared to SAE washers of the same screw size, making this washer the preferred choice when building codes or manufacturer guidelines specify a USS-pattern flat washer. It follows inch-system dimensions and is well suited for standard US fastener applications.
Designed as an OEM-style replacement or direct-use flat washer for applications requiring a 5/8 inch USS-pattern washer in inch-system fastener assemblies.
USS flat washers are installed by licensed tradespeople and general mechanics using standard hand tools. Always ensure the fastener, washer, and mating hardware share compatible material grades to avoid galvanic corrosion or load mismatch. Refer to applicable mechanical codes and manufacturer torque guidelines for the specific fastener assembly. Do not substitute a USS washer for an SAE washer in applications where the outer diameter is dimensionally constrained.
We pulled together the parts most installs need for this unit, plus a few add-ons worth a look. Check what you need — nothing here blocks checkout.
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