S-91117A252 1.062" ID x 3.5" OD Oversized Washers

Key Features & Benefits at a Glance

• Superior corrosion resistance with zinc plating that protects against rust and extends service life in harsh industrial environments
• Excellent load distribution with large 3.5" outer diameter that prevents surface damage and maintains joint integrity under heavy loads
• Precise fit for 1" screws with 1.062" inner diameter ensuring secure fastening and reducing installation time
• Consistent performance with Rockwell B40 hardness providing reliable strength and durability across multiple applications
• Regulatory compliance assurance meeting RoHS 3 and REACH standards for safe use in regulated industries
• Thickness consistency with 0.235-0.265" range ensuring uniform pressure distribution and vibration resistance
• Heavy-duty construction in zinc-plated steel offering robust performance for demanding mechanical applications

Professional Applications & Engineering Value

These zinc-plated steel flat washers deliver critical engineering solutions for industrial applications where corrosion resistance and load distribution are paramount. The zinc plating provides essential protection against environmental factors, significantly extending component life in outdoor equipment, construction machinery, and marine applications. With their substantial 3.5" outer diameter, these washers effectively distribute clamping force over a wider area, preventing surface indentation and maintaining structural integrity in heavy-load scenarios. The precise 1.062" inner diameter ensures perfect compatibility with 1" screw size fasteners, eliminating play and reducing the risk of joint loosening due to vibration. Engineered to Rockwell B40 hardness, these washers maintain their structural integrity under repeated stress cycles, making them ideal for automotive assemblies, industrial machinery, and structural steel connections where reliability cannot be compromised.

Specification Summary & Compliance

This flat washer features precise dimensional specifications including 1.062" inner diameter, 3.5" outer diameter, and thickness range of 0.235-0.265" designed for 1" screw size applications. Manufactured to inch system measurement standards with Rockwell B40 hardness for consistent mechanical performance. The product is fully compliant with RoHS 3 (2015/863/EU) under exemption 6(a) for lead as an alloying element in steel and meets REACH (EC 1907/2006) requirements as of January 17, 2023, including compliance with 233 SVHC substances, ensuring environmental safety and regulatory adherence for industrial use.