S-96582A304 0.312" ID x 0.75" OD ASME B18.21.1 USS Washers

Key Features & Benefits at a Glance

• Superior corrosion protection with black-coated steel construction for extended service life in harsh environments
• Precise dimensional fit with 0.312" ID and 0.75" OD ensuring proper alignment and load distribution
• Industry-standard compliance with ASME B18.21.1 specifications for reliable mechanical performance
• Environmental regulation adherence with full RoHS 3 and REACH compliance for global industrial use
• Durable steel construction providing consistent performance under mechanical stress and vibration
• Optimal thickness range (0.051-0.080") for balanced spacing and secure fastening applications
• Universal compatibility with 1/4" screw sizes across various industrial assemblies and equipment

Professional Applications & Engineering Value

These USS flat washers deliver exceptional engineering value through their black corrosion-resistant coated steel construction, specifically designed to address common industrial challenges. The protective coating significantly reduces oxidation and degradation in moisture-prone environments, extending component lifespan while maintaining structural integrity. Engineered to ASME B18.21.1 standards, these washers provide reliable load distribution and surface protection for 1/4" fasteners in mechanical assemblies, construction equipment, and industrial machinery. Their precise dimensional control (0.312" ID x 0.75" OD) ensures proper seating and alignment, preventing fastener loosening under vibration while protecting sensitive surfaces from damage. Ideal for outdoor equipment, marine applications, and manufacturing facilities where corrosion resistance and long-term reliability are critical operational requirements.

Specification Summary & Compliance

Manufactured to exacting ASME B18.21.1 dimensional and material specifications, these USS flat washers feature precise internal diameter (0.312") and outer diameter (0.75") measurements with controlled thickness variations (0.051-0.080"). The products maintain full compliance with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, ensuring safe use across global industrial markets. Designed for inch system applications with compatibility for 1/4" screw sizes, these washers meet rigorous industrial standards for corrosion-resistant hardware in demanding mechanical environments.