S-93852A181 1.062" ID x 2.5" OD ASME B18.21.1 USS Washers

Key Features & Benefits at a Glance

• Superior corrosion resistance with Black-Oxide 18-8 Stainless Steel construction, ideal for harsh environments and extended service life.
• Enhanced load distribution with 2.5" OD and 1.062" ID, preventing surface damage and loosening under heavy loads for 1" screws.
• Exceptional mechanical durability thanks to Rockwell B68 hardness, resisting deformation and maintaining performance under stress.
• Reliable dimensional accuracy compliant with ASME B18.21.1 standards, ensuring consistent fit and function in USS flat washer applications.
• Strict environmental compliance with RoHS 3 and REACH, making it safe for regulated industries and global supply chains.
• Optimized thickness range (0.136-0.192") provides flexibility for various clamping needs while maintaining structural integrity.
• Broad industrial suitability in inch-based systems, offering dependable performance in machinery, construction, and heavy equipment.

Professional Applications & Engineering Value

This Black-Oxide 18-8 Stainless Steel USS flat washer addresses critical engineering challenges in demanding sectors. Its corrosion-resistant material and black-oxide surface treatment protect against rust and chemical exposure, significantly reducing maintenance in marine, chemical processing, and outdoor applications. The precise 1.062" ID and 2.5" OD dimensions, combined with ASME B18.21.1 compliance, ensure secure fastening for 1" screw assemblies, preventing bolt loosening and joint failure under vibration or dynamic loads. Engineers value its Rockwell B68 hardness for maintaining shape and distributing pressure evenly, enhancing the longevity of heavy-duty industrial equipment and structural connections.

Specification Summary & Compliance

This washer meets ASME B18.21.1 specifications for dimensional standards, with an inner diameter of 1.062", outer diameter of 2.5", and thickness ranging from 0.136" to 0.192". It is manufactured from 18-8 Stainless Steel with a black-oxide finish and hardness of Rockwell B68. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring it is free from hazardous substances and suitable for use in environmentally conscious industrial applications.