S-93852A103 0.375" ID x 0.875" 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 environments and extended service life
• Exceptional load distribution with USS flat washer design, preventing surface damage and loosening under vibration
• Precise 5/16" screw compatibility ensures perfect fit and secure fastening in industrial assemblies
• Enhanced durability from Rockwell B68 hardness, maintaining structural integrity under repeated stress
• Guaranteed dimensional accuracy with 0.375" ID and 0.875" OD, providing consistent performance in precision applications
• Full regulatory compliance with RoHS 3 and REACH standards, ensuring safe use in global markets
• Reliable standardization per ASME B18.21.1, guaranteeing interchangeability and engineering consistency

Professional Applications & Engineering Value

These 18-8 stainless steel flat washers deliver critical engineering value by solving common industrial challenges like galvanic corrosion, joint failure, and material degradation. The USS designation ensures optimal load spreading for 5/16" fasteners, protecting soft surfaces and reducing maintenance in machinery, structural frameworks, and marine equipment. With inherent corrosion resistance and a Rockwell B68 hardness rating, they withstand chemical exposure and mechanical stress, making them indispensable for heavy-duty applications in manufacturing, construction, and offshore operations where reliability and longevity are paramount.

Specification Summary & Compliance

This washer meets exact dimensional tolerances with 0.375" inner diameter, 0.875" outer diameter, and thickness ranging 0.064-0.104". Manufactured to ASME B18.21.1 specifications, it ensures consistent thread engagement and performance. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, affirming its suitability for environmentally conscious and regulated industrial sectors.