S-90126A040 1.375" ID x 2.5" OD ASME B18.21.1 SAE Washers

Key Features & Benefits at a Glance

• Superior corrosion protection with zinc-plated steel construction for extended service life in harsh industrial environments
• Precise dimensional compatibility with 1.375" ID and 2.5" OD ensuring perfect fit for 1 1/4" screw sizes
• Optimized load distribution through controlled thickness range (0.136-0.192") to prevent surface damage and fastener loosening
• Industry-standard compliance with ASME B18.21.1 specifications guaranteeing consistent quality and performance
• Environmental regulation adherence with RoHS 3 and REACH compliance for safe, sustainable industrial use
• Enhanced assembly reliability through SAE flat washer design providing stable bearing surfaces for critical connections
• Versatile inch system compatibility for seamless integration with existing industrial equipment and fastening systems

Professional Applications & Engineering Value

These zinc-plated steel flat washers deliver exceptional engineering value in demanding industrial applications where corrosion resistance and dimensional precision are critical. The SAE flat washer design with 1.375" ID and 2.5" OD provides optimal load distribution for 1 1/4" screw sizes, preventing surface damage and maintaining clamping force in heavy machinery, structural steel connections, and industrial equipment assemblies. The zinc plating creates a protective barrier against moisture and chemical exposure, significantly extending service life in manufacturing plants, outdoor installations, and high-humidity environments. Engineered to ASME B18.21.1 specifications, these washers ensure reliable performance in vibration-prone applications while meeting strict industrial washer requirements for dimensional consistency and material quality.

Specification Summary & Compliance

This SAE flat washer features precise dimensional specifications with 1.375" inner diameter, 2.5" outer diameter, and thickness range of 0.136-0.192" designed for 1 1/4" screw sizes. Manufactured from zinc-plated steel in the inch measurement system, the washer conforms to ASME B18.21.1 mechanical standards for dimensional requirements and quality. The product maintains full compliance with RoHS 3 (2015/863/EU) restrictions on hazardous substances and REACH (EC 1907/2006) regulations concerning chemical substances, ensuring environmental responsibility and workplace safety.