S-98019A505 0.5" ID x 1.25" OD MS15795-817; NASM15795; ASME B18.21.1 Mil. Spec. Washers
Mil. Spec. Washers
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Basic Information
Dimension Parameters
Material & Strength Parameters
Installation & Application Parameters
Finish & Compliance Parameters
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Key Features & Benefits at a Glance
- Superior corrosion resistance with passivated 18-8 stainless steel construction, ideal for harsh industrial environments
- Precise dimensional fit with 0.5" ID and 1.25" OD ensuring reliable performance with 7/16" screw sizes
- Enhanced load distribution and vibration resistance through controlled 0.064-0.104" thickness range
- Certified mechanical strength with Rockwell B70 hardness for long-term durability under stress
- Full compliance with military and industrial standards including MS15795-817, NASM15795, and ASME B18.21.1
- Environmental regulation adherence with RoHS 3 and REACH compliance for safe global sourcing
- Optimized for inch-system applications in aerospace, machinery, and heavy equipment assembly
Professional Applications & Engineering Value
These passivated 18-8 stainless steel flat washers deliver critical protection against galvanic corrosion and chemical degradation in demanding environments. The inch-system dimensions (0.5" ID x 1.25" OD) provide precise alignment with 7/16" fasteners, preventing joint loosening from vibration while distributing clamp load effectively. Engineers specify these MS15795-817 and NASM15795 compliant washers for aerospace frameworks, marine equipment, and food processing machinery where corrosion resistance and material integrity are paramount. The passivation layer enhances surface durability without compromising dimensional stability, making them ideal for applications requiring repeated disassembly and reassembly cycles.
Specification Summary & Compliance
Manufactured to exacting ASME B18.21.1 dimensional standards with Rockwell B70 hardness ensuring consistent mechanical properties. Compliant with MS15795-817 and NASM15795 military specifications for quality assurance. Meets RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental directives, verified against 235 SVHC substances as of June 2023. Designed for use with 7/16" screw sizes in inch-system applications requiring precision flat washers.
