S-96659A145 1.375" ID x 2.5" OD ASME B18.21.1 SAE Washers

Key Features & Benefits at a Glance

• Superior corrosion resistance with Black-Oxide 18-8 Stainless Steel construction, ideal for harsh industrial environments
• Precise dimensional fit with 1.375" ID and 2.5" OD ensuring reliable performance with 1 1/4" fasteners
• Enhanced load distribution through optimized flat washer design, reducing surface pressure and preventing damage
• Industry-standard compliance with ASME B18.21.1 specifications for consistent quality and interchangeability
• Environmental regulation adherence with full RoHS 3 and REACH compliance for global supply chain compatibility
• Durable mechanical properties of 18-8 stainless steel providing long-term reliability in demanding applications
• Broad industrial compatibility with inch system measurements for seamless integration into existing assemblies

Professional Applications & Engineering Value

Engineered for industrial environments where corrosion resistance and dimensional precision are critical, these SAE flat washers provide exceptional value in mechanical assemblies, heavy equipment, and outdoor applications. The Black-Oxide 18-8 Stainless Steel construction offers superior protection against oxidation and chemical exposure, while the precise 1.375" ID and 2.5" OD dimensions ensure perfect fit with 1 1/4" screws, preventing loosening and maintaining joint integrity. The flat washer design effectively distributes clamping force across wider surfaces, protecting sensitive materials from damage during torque application and vibration. These washers deliver reliable performance in automotive, construction, and marine applications where environmental factors and mechanical stress demand durable industrial washers that maintain their protective qualities over extended service life.

Specification Summary & Compliance

This flat washer features precise dimensional specifications with 1.375" inner diameter, 2.5" outer diameter, and thickness ranging from 0.136" to 0.192" for compatibility with 1 1/4" fasteners. Manufactured to ASME B18.21.1 standards, these washers ensure dimensional consistency and mechanical reliability. The product maintains full compliance with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, meeting current environmental and safety requirements for industrial components. Constructed from Black-Oxide 18-8 Stainless Steel using inch system measurements, these washers deliver consistent performance in accordance with established industrial specifications.