S-96659A133 0.281" ID x 0.625" OD ASME B18.21.1 SAE Washers

Key Features & Benefits at a Glance

• Superior corrosion resistance from 18-8 stainless steel with black-oxide finish, ideal for harsh industrial environments
• Precise dimensional fit with 0.281" ID and 0.625" OD ensuring proper alignment and load distribution for 1/4" fasteners
• Enhanced durability through cold-worked stainless steel construction maintaining performance under repeated stress
• Industry-standard compliance with ASME B18.21.1 specifications guaranteeing interchangeability and reliability
• Environmental responsibility with full RoHS 3 and REACH compliance for global supply chain integration
• Consistent thickness control (0.051-0.080") providing uniform bearing surface and vibration resistance
• Broad compatibility with SAE inch-system components across machinery, equipment, and structural applications

Professional Applications & Engineering Value

These black-oxide 18-8 stainless steel flat washers deliver critical protection against galvanic corrosion and environmental degradation in demanding applications. The SAE specification design ensures precise fit with 1/4" fasteners, preventing loosening under vibration while distributing clamp load effectively across assembled components. Engineered to ASME B18.21.1 standards, they provide reliable performance in industrial machinery, automotive assemblies, and outdoor equipment where corrosion resistance and dimensional stability are paramount. The combination of stainless steel material and controlled thickness (0.051-0.080") creates an optimal balance between strength and flexibility for long-term fastening integrity.

Specification Summary & Compliance

Manufactured to ASME B18.21.1 dimensional standards with 0.281" ID ±0.005" and 0.625" OD ±0.010" tolerances. Constructed from 18-8 stainless steel with black-oxide surface treatment. Fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, containing no substances of very high concern above threshold limits. Designed for use with 1/4" screw sizes in inch-system applications requiring corrosion-resistant flat washers.