S-93852A165 1.625" ID x 3.5" OD ASME B18.21.1 USS Washers

Key Features & Benefits at a Glance

• Superior corrosion resistance with 18-8 stainless steel construction, ideal for harsh industrial environments
• Enhanced durability and wear resistance from the black-oxide surface treatment, extending service life
• Optimal load distribution with USS flat washer design, preventing surface damage and loosening
• Precise dimensional fit with 1.625" ID and 3.5" OD, ensuring compatibility with 1 1/2" screw sizes
• Reliable mechanical performance backed by ASME B18.21.1 standard compliance
• Environmental and safety compliance with RoHS 3 and REACH regulations for global industrial use
• Versatile thickness range (0.153-0.213") to accommodate various assembly requirements

Professional Applications & Engineering Value

These USS flat washers in black-oxide 18-8 stainless steel deliver critical engineering solutions for heavy-load applications. The corrosion-resistant material ensures long-term reliability in demanding environments like chemical processing, marine equipment, and outdoor infrastructure. With a 1.625" ID and 3.5" OD, they provide superior surface coverage, distributing clamp load effectively to prevent joint failure and material deformation. The ASME B18.21.1 compliance guarantees dimensional consistency, reducing installation errors in industrial washers assemblies for machinery, structural steel, and large-scale fastening systems where vibration resistance and durability are paramount.

Specification Summary & Compliance

This flat washer meets ASME B18.21.1 dimensional standards with an inner diameter of 1.625", outer diameter of 3.5", and thickness ranging from 0.153" to 0.213". Manufactured from 18-8 stainless steel with a black-oxide finish, it is designed for use with 1 1/2" screw sizes. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental safety and unrestricted use in industrial markets.