S-91525A335 0.531" ID x 1.125" OD Oversized Washers

Key Features & Benefits at a Glance

• Superior corrosion resistance with 316 stainless steel construction, ideal for harsh chemical and marine environments
• Enhanced durability and load distribution from Rockwell B68 hardness, preventing deformation under pressure
• Precise dimensional fit with 0.531" ID and 1.125" OD ensuring reliable performance with 1/2" screws
• Consistent thickness control between 0.110-0.140" for uniform clamping force and vibration resistance
• Full regulatory compliance with RoHS 3 and REACH standards, safe for global industrial applications
• Long-term reliability in inch-system assemblies, reducing maintenance and replacement costs
• Versatile industrial compatibility for machinery, piping, and structural applications requiring flat washers

Professional Applications & Engineering Value

This 316 stainless steel flat washer delivers exceptional engineering value in demanding industrial settings where corrosion and chemical exposure compromise fastener integrity. The molybdenum-enhanced 316 alloy provides superior pitting resistance in chloride environments, making it ideal for marine equipment, chemical processing plants, and offshore installations. With precise 1/2" screw compatibility and controlled 0.110-0.140" thickness, it maintains consistent clamping pressure while preventing galvanic corrosion in mixed-metal assemblies. The Rockwell B68 hardness ensures the washer withstands vibrational loads and bolt preload stresses without embrittlement, offering reliable performance in heavy-duty machinery, structural connections, and high-temperature applications where flat washers must maintain dimensional stability under continuous operation.

Specification Summary & Compliance

Manufactured to standard inch system dimensions with 0.531" ID, 1.125" OD, and 0.110-0.140" thickness range for precise fit with 1/2" fasteners. The 316 stainless steel construction meets industrial hardness requirements at Rockwell B68. Full compliance with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, including the latest SVHC updates, ensures environmental safety and global market acceptance for industrial washer applications.