S-98019A355 0.281" ID x 0.625" OD MS15795-810; NASM15795; ASME B18.21.1 Mil. Spec. Washers

Key Features & Benefits at a Glance

• Superior corrosion resistance with passivated 18-8 stainless steel construction for extended service life in harsh environments
• Exceptional load distribution through precise 0.281" ID and 0.625" OD dimensions, preventing surface damage and fastener loosening
• Reliable hardness performance at Rockwell B70 for consistent durability under mechanical stress
• Perfect fit compatibility with 1/4" screw sizes, ensuring secure fastening in inch-system applications
• Rigorous quality assurance through compliance with MS15795-810, NASM15795, and ASME B18.21.1 standards
• Environmental responsibility with RoHS 3 and REACH compliance for sustainable industrial operations
• Optimized thickness range (0.051-0.080") providing ideal spacing and vibration resistance

Professional Applications & Engineering Value

These passivated 18-8 stainless steel flat washers deliver critical engineering solutions where corrosion resistance and mechanical reliability are paramount. The precision inch dimensions (0.281" ID × 0.625" OD) ensure perfect alignment with 1/4" fasteners, eliminating misalignment issues in industrial assembly applications. The Rockwell B70 hardness provides exceptional resistance to deformation under load, while the passivated surface treatment creates a protective oxide layer that significantly extends service life in corrosive environments. These flat washers are engineered to meet the demanding requirements of aerospace (MS15795-810), military (NASM15795), and general industrial (ASME B18.21.1) standards, making them ideal for critical fastening applications where failure is not an option.

Specification Summary & Compliance

Manufactured to exacting dimensional tolerances with 0.281" inner diameter and 0.625" outer diameter specifications, these washers maintain precision fit for 1/4" screw applications. The thickness range of 0.051-0.080" ensures consistent performance across production batches. Compliance with MS15795-810, NASM15795, and ASME B18.21.1 standards guarantees adherence to rigorous manufacturing and quality control protocols. Environmental compliance is verified through RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) certifications, ensuring these components meet the latest environmental safety requirements for industrial use.