S-91201A033 0.531" ID x 1" OD Oversized Washers

Key Features & Benefits at a Glance

• Superior load distribution with precise 1" outer diameter design to prevent surface damage and extend joint life
• Optimized material strength from premium steel with Rockwell B84 hardness for reliable performance under heavy loads
• Perfect fit compatibility with 0.531" inner diameter specifically engineered for 1/2" screw applications
• Consistent thickness control between 0.183-0.193" ensures uniform pressure distribution and vibration resistance
• Environmental compliance assurance meeting RoHS 3 and REACH standards for safe industrial use
• Enhanced durability through robust steel construction that withstands mechanical stress and corrosion
• Standardized inch sizing for seamless integration with existing industrial equipment and fastening systems

Professional Applications & Engineering Value

This steel flat washer delivers critical engineering solutions for industrial applications where load distribution and joint integrity are paramount. The Rockwell B84 hardness rating ensures the washer maintains its structural integrity under substantial mechanical stress, while the precise 0.531" ID provides perfect alignment with 1/2" screws in heavy machinery, construction frameworks, and manufacturing equipment. The generous 1" OD creates an optimal bearing surface that prevents embedment into soft materials and distributes clamping force effectively. Engineered for industrial washers applications, this component addresses common failure points in fastened connections by reducing loosening from vibration and minimizing surface damage to expensive components.

Specification Summary & Compliance

This flat washer features precise inch dimensioning with 0.531" inner diameter, 1" outer diameter, and controlled thickness between 0.183-0.193" for consistent performance. Manufactured from premium steel with Rockwell B84 hardness rating, the washer meets industrial standards for mechanical fasteners. The product is fully compliant with RoHS 3 (2015/863/EU) under exemption 6(a) for lead as an alloying element in steel and REACH (EC 1907/2006) regulations current as of January 17, 2023, ensuring environmental responsibility in industrial applications.