S-98180A260 1.387" ID x 2.512" OD ASME B18.21.1 SAE Washers

Key Features & Benefits at a Glance

• Superior corrosion resistance with zinc-flake coating for extended service life in harsh industrial environments
• Exceptional load distribution with precise 1.387" ID and 2.512" OD dimensions to prevent surface damage and joint failure
• High-strength performance meeting Grade 8 standards for demanding heavy-duty applications
• Consistent thickness control (0.136-0.177") ensures uniform clamping force and reliable assembly performance
• Enhanced durability with Rockwell C38 hardness providing excellent resistance to deformation under pressure
• Industry-standard compliance with ASME B18.21.1 specifications for guaranteed dimensional accuracy and performance
• Environmental responsibility with RoHS 3 and REACH compliance for sustainable manufacturing operations

Professional Applications & Engineering Value

This SAE Grade 8 flat washer delivers critical engineering solutions for heavy-duty industrial applications where reliability is paramount. The zinc-flake coated steel construction provides superior protection against corrosion and chemical exposure, significantly extending service life in challenging environments. With its Rockwell C38 hardness and precise dimensional control, this washer effectively distributes clamping forces, prevents bolt head embedding, and maintains joint integrity under extreme vibration and load conditions. The 1 1/4" SAE specification ensures perfect compatibility with standard fastener systems, while the ASME B18.21.1 compliance guarantees consistent performance across industrial machinery, construction equipment, and automotive assemblies where failure is not an option.

Specification Summary & Compliance

This heavy-duty flat washer features precise dimensional specifications including 1.387" inner diameter, 2.512" outer diameter, and thickness range of 0.136-0.177" for 1 1/4" screw size applications. Manufactured to ASME B18.21.1 standards with Grade 8 strength classification and Rockwell C38 hardness, the component ensures reliable performance in demanding environments. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, meeting the latest environmental and safety requirements for industrial use.