Value Collection SSWASHER5377 Uss Flat Washer 5/8 in

Product Description

The VALUE COLLECTION SSWASHER5377 is a USS flat washer sized for 5/8-inch screws and fasteners. Manufactured from Grade 316 stainless steel, this washer provides reliable corrosion resistance in wet, chemical-exposed, and marine environments. It carries a 11/16-inch inside diameter, a 1-3/4-inch outside diameter, and a 0.134-inch thickness, conforming to USS flat washer dimensional standards. The larger outer diameter of the USS pattern distributes clamping load across a wider bearing surface compared to standard SAE washers. Plumbers, pipefitters, and general tradespeople use this washer in bolted connections where moisture exposure or chemical contact would corrode carbon steel hardware.

This washer suits residential and light commercial applications where Grade 316 stainless is specified for its superior resistance to chlorides and oxidizing environments. Common install scenarios include pipe flange connections, equipment mounting in mechanical rooms, outdoor structural fastening, and coastal or poolside installations. The USS flat washer pattern is widely called out in plumbing, HVAC, and general mechanical assembly specifications where load distribution under bolt heads or nuts is required.

Key Features

• Grade 316 stainless steel construction resists corrosion in chloride-rich and wet environments
• USS flat washer profile provides wider load distribution than SAE pattern washers
• 11/16-inch inside diameter fits 5/8-inch screw shanks cleanly
• 1-3/4-inch outside diameter spreads clamping force across the bearing surface
• 0.134-inch thickness meets USS dimensional standards for this screw size
• Inch measurement system; suitable for standard fractional fastener assemblies

Compatibility

Designed as an OEM-style replacement or direct-use flat washer for 5/8-inch screw and bolt assemblies requiring USS-pattern dimensions in stainless steel.

Installation Notes

Install using standard hand tools appropriate for the fastener size; ensure the washer seats flat against the mating surface before torquing the fastener. Power down or de-energize any associated equipment before accessing bolted connections in electrical or mechanical panels. Follow applicable codes such as IFGC or IPC for mechanical piping connections, and NEC requirements when washers are used in electrical enclosure assemblies. Do not mix stainless steel fastener hardware with dissimilar metals in submerged or highly conductive environments without evaluating galvanic corrosion risk.