S-93550A110 1.5" ID x 2.75" OD Oversized Washers

Key Features & Benefits at a Glance

• Superior corrosion protection with black-oxide steel finish for extended service life in harsh industrial environments
• Precise dimensional fit with 1.5" ID and 2.75" OD ensures perfect alignment with 1 3/8" screw applications
• Optimal load distribution through substantial 0.235-0.265" thickness for heavy-duty fastening requirements
• Enhanced durability from steel construction maintains structural integrity under high-pressure conditions
• Regulatory compliance with RoHS 3 and REACH standards guarantees safe, environmentally responsible manufacturing
• Inch system compatibility designed for seamless integration with North American industrial equipment and specifications
• Reliable performance in demanding applications where consistent washer performance is critical

Professional Applications & Engineering Value

These black-oxide steel flat washers deliver exceptional engineering value in industrial settings where corrosion resistance and load distribution are paramount. The black-oxide surface treatment creates a protective barrier against moisture and chemical exposure, significantly extending component life in outdoor applications, manufacturing equipment, and structural assemblies. With precise 1.5" ID x 2.75" OD dimensions specifically engineered for 1 3/8" screw size applications, these washers prevent bolt loosening, reduce surface pressure, and maintain joint integrity in heavy machinery, construction projects, and industrial maintenance. The substantial 0.235-0.265" thickness ensures reliable performance where vibration and dynamic loads threaten fastener security, making them ideal for critical connections in transportation equipment, industrial platforms, and mechanical systems requiring durable inch system washers.

Specification Summary & Compliance

This flat washer maintains standard inch system tolerances with precise 1.5" inner diameter and 2.75" outer diameter dimensions, featuring consistent 0.235-0.265" thickness throughout. Manufactured from quality steel with black-oxide surface treatment for enhanced corrosion resistance. 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, including 233 SVHC substances. Designed specifically for use with 1 3/8" screw size applications in industrial and construction environments.