S-93852A138 0.812" ID x 2" OD ASME B18.21.1 USS Washers

Key Features & Benefits at a Glance

• Superior corrosion resistance with 316 stainless steel construction, ideal for harsh chemical and marine environments.
• Enhanced load distribution from the USS flat design, reducing surface pressure and preventing fastener loosening.
• Consistent dimensional accuracy with 0.812" ID and 2" OD, ensuring reliable fit for 3/4" screws.
• Exceptional durability backed by Rockwell B68 hardness, providing long-term performance under heavy loads.
• Full regulatory compliance with RoHS 3 and REACH standards, safe for restricted substance-sensitive applications.
• Industry-standard reliability meeting ASME B18.21.1 specifications, guaranteeing interchangeability and quality.
• Optimized thickness range (0.122-0.177") for versatile shock absorption and spacing needs.

Professional Applications & Engineering Value

Engineered for demanding industrial settings, these 316 stainless steel USS flat washers deliver critical protection against galvanic and chemical corrosion in marine, chemical processing, and offshore applications. The heavy-duty inch system design with precise 0.812" ID and 2" OD ensures uniform clamping force distribution, preventing joint failure and surface damage under vibration or thermal cycling. With Rockwell B68 hardness, they maintain structural integrity in high-stress assemblies, while ASME B18.21.1 compliance guarantees consistent performance in machinery, structural steel, and piping systems where reliability is non-negotiable.

Specification Summary & Compliance

This USS flat washer conforms to ASME B18.21.1 dimensional standards with an inner diameter of 0.812", outer diameter of 2", and thickness ranging 0.122-0.177" for 3/4" screw sizes. Manufactured from 316 stainless steel with Rockwell B68 hardness, it meets RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) compliance requirements, ensuring adherence to environmental and safety regulations for industrial components.