S-98019A309 0.125" ID x 0.25" OD MS15795-803; NASM15795 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 0.125" ID and 0.25" OD ensuring reliable performance with No. 4 screws
- Enhanced load distribution and surface protection from consistent 0.017-0.028" thickness
- Long-term mechanical durability backed by Rockwell B70 hardness for repeated assembly use
- Guaranteed interchangeability through compliance with MS15795-803 and NASM15795 aerospace standards
- Environmentally responsible manufacturing with full RoHS 3 and REACH compliance
- Reduced maintenance requirements thanks to stainless steel's inherent resistance to rust and degradation
Professional Applications & Engineering Value
These passivated 18-8 stainless steel flat washers deliver critical engineering solutions where corrosion resistance and dimensional precision are paramount. The 0.125" ID x 0.25" OD configuration provides optimal bearing surface for No. 4 screw applications, preventing loosening and material embedment in assemblies subjected to vibration or thermal cycling. The MS15795-803/NASM15795 compliance ensures consistent performance in aerospace, electronics, and marine applications where component failure is not an option. The passivation surface treatment creates a protective oxide layer that significantly extends service life in humid, chemical, or salt-spray environments, making these industrial washers ideal for OEM and MRO requirements across multiple sectors.
Specification Summary & Compliance
Manufactured to MS15795-803 and NASM15795 specifications with dimensional tolerances maintained for inch-system applications. The 18-8 stainless steel construction provides consistent mechanical properties with Rockwell B70 hardness rating. Full compliance with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental directives, including the latest SVHC requirements as of June 2023, ensures these components meet the most stringent regulatory standards for industrial use.
