S-98017A251 0.14" ID x 0.438" OD NAS1149-CN532R 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 for extended service life in harsh environments
- Precise dimensional fit with 0.14" ID and 0.438" OD ensuring reliable performance with No. 5 screws
- Consistent load distribution through controlled thickness (0.028-0.036") for improved joint integrity
- Rigorous quality assurance meeting NAS1149-CN532R specifications for aerospace and industrial applications
- Environmental compliance with RoHS 3 and REACH regulations for safe use in regulated industries
- Excellent surface protection through passivation treatment preventing galvanic corrosion
- Broad compatibility with inch-system fasteners for seamless integration into existing assemblies
Professional Applications & Engineering Value
These passivated 18-8 stainless steel flat washers deliver critical performance in demanding environments where corrosion resistance and dimensional precision are paramount. The passivation surface treatment creates a protective oxide layer that significantly enhances the washer's resistance to chemical attack and oxidation, making them ideal for aerospace assemblies, marine equipment, and chemical processing applications. Meeting NAS1149-CN532R specifications ensures consistent quality and reliability in high-stress environments. The precise 0.14" ID provides optimal fit with No. 5 screws, while the 0.438" OD offers superior load distribution to prevent surface damage and maintain joint integrity under vibration and thermal cycling conditions.
Specification Summary & Compliance
Manufactured to exacting NAS1149-CN532R specifications with precise dimensional tolerances: 0.14" inner diameter, 0.438" outer diameter, and thickness ranging 0.028-0.036". Constructed from 18-8 stainless steel with passivation surface treatment for enhanced corrosion protection. Fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental safety and regulatory adherence for industrial and aerospace applications.
