S-91117A250 1.062" ID x 3.25" OD Oversized Washers

Key Features & Benefits at a Glance

• Superior corrosion resistance with zinc-plated steel construction, extending service life in harsh industrial environments
• Enhanced load distribution from precise 3.25" OD design, preventing surface damage and fastener loosening
• Optimal hardness performance with Rockwell B40 rating, maintaining structural integrity under heavy loads
• Perfect fit for 1" screws with 1.062" ID, ensuring secure fastening and vibration resistance
• Regulatory compliance assurance meeting RoHS 3 and REACH standards for global industrial applications
• Consistent thickness control (0.235-0.265") providing reliable sealing and spacing performance
• Heavy-duty construction designed for demanding mechanical applications requiring durable hardware components

Professional Applications & Engineering Value

This zinc-plated steel flat washer delivers exceptional engineering value in industrial applications where corrosion resistance and load distribution are critical. The zinc plating provides a protective barrier against oxidation and environmental elements, significantly extending component life in outdoor or high-moisture settings. With its substantial 3.25" outer diameter, this heavy-duty washer effectively distributes clamping force over a wider surface area, preventing material deformation and maintaining joint integrity in structural assemblies, machinery, and equipment frames. The precise 1.062" inner diameter ensures perfect compatibility with 1" screws, eliminating play and reducing vibration-induced loosening in dynamic load conditions common in manufacturing, construction, and mechanical systems.

Specification Summary & Compliance

Manufactured to exact dimensional specifications with 1.062" inner diameter, 3.25" outer diameter, and thickness range of 0.235-0.265". The washer features Rockwell B40 hardness for consistent mechanical performance and is constructed from zinc-plated steel for corrosion protection. Full compliance with RoHS 3 (2015/863/EU) under exemption 6(a) for lead as an alloying element in steel and REACH (EC 1907/2006) regulations as of January 17, 2023, ensuring environmental and safety standards are met for industrial distribution and use.