S-93852A171 0.312" ID x 0.75" OD USS Washers

Key Features & Benefits at a Glance

• Superior corrosion resistance with 18-8 stainless steel construction and black-oxide finish for extended service life in harsh environments
• Exceptional durability backed by Rockwell B68 hardness, maintaining structural integrity under heavy loads and vibration
• Precise dimensional fit with 0.312" ID and 0.75" OD ensuring reliable performance with 1/4" fasteners
• Optimal load distribution through USS flat washer design, preventing surface damage and loosening
• Regulatory compliance assurance with RoHS 3 and REACH standards for safe industrial use
• Consistent thickness control between 0.051-0.080" for uniform pressure application
• Versatile industrial compatibility with inch measurement system for broad equipment and machinery applications

Professional Applications & Engineering Value

These USS flat washers deliver critical engineering solutions where corrosion resistance and mechanical strength are paramount. The black-oxide 18-8 stainless steel construction provides exceptional protection against rust and chemical degradation, making them ideal for marine, chemical processing, and outdoor industrial applications. The precise 0.312" ID ensures perfect fitment with 1/4" fasteners, while the 0.75" OD provides optimal surface coverage to prevent embedment and distribute clamping forces effectively. With Rockwell B68 hardness, these washers maintain dimensional stability under sustained pressure and vibration, solving common failure points in heavy machinery, structural assemblies, and high-vibration environments where standard washers would degrade prematurely.

Specification Summary & Compliance

This USS flat washer features inch system dimensions with 0.312" inner diameter, 0.75" outer diameter, and thickness ranging 0.051-0.080". Manufactured from 18-8 stainless steel with black-oxide surface treatment and Rockwell B68 hardness rating. Fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental safety and industrial regulatory adherence for global supply chain requirements.