S-91434A435 1.375" ID x 2.5" OD ASME B18.21.1 SAE Washers

Key Features & Benefits at a Glance

• Superior corrosion protection with black-coated steel construction for extended service life in harsh industrial environments
• Optimal load distribution from precise 1.375" ID x 2.5" OD dimensions that prevent surface damage and joint loosening
• Reliable dimensional stability with 0.136-0.192" thickness range ensuring consistent performance under compression
• Industry-standard compatibility designed specifically for 1 1/4" screw sizes in mechanical assemblies
• Quality assurance through full compliance with ASME B18.21.1 specifications for dimensional accuracy
• Environmental responsibility with RoHS 3 and REACH compliance meeting global regulatory requirements
• Enhanced durability from SAE-grade flat washer design that withstands heavy-duty mechanical stress

Professional Applications & Engineering Value

These SAE flat washers deliver critical engineering solutions for industrial equipment maintenance, construction machinery, and heavy vehicle assemblies. The black corrosion-resistant coated steel construction specifically addresses oxidation and chemical degradation in outdoor or high-moisture environments, significantly extending component lifespan. With precise 1.375" ID and 2.5" OD dimensions, these industrial washers provide optimal bearing surface distribution, preventing bolt head embedding and maintaining clamp force integrity in 1 1/4" screw size applications. The standardized ASME B18.21.1 compliance ensures seamless integration with existing inch-system fastening solutions while reducing assembly time and replacement frequency.

Specification Summary & Compliance

Manufactured to ASME B18.21.1 dimensional standards with 1.375" inner diameter, 2.5" outer diameter, and 0.136-0.192" thickness range. Designed for use with 1 1/4" screw sizes in inch measurement systems. Full compliance with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, ensuring hazardous substance restriction adherence. Material specification confirms black corrosion-resistant coated steel construction for industrial-grade performance.