S-98017A605 0.105" ID x 0.25" OD NAS1149-CN332R; AN960-C3 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
• Precise dimensional fit with 0.105" ID and 0.25" OD ensures perfect compatibility with No. 3 screws
• Enhanced load distribution through controlled thickness (0.028-0.036") prevents surface damage and fastener loosening
• Exceptional mechanical strength with Rockwell B70 hardness maintains structural integrity under pressure
• Rigorous quality assurance through compliance with NAS1149-CN332R and AN960-C3 aerospace standards
• Environmental compliance with RoHS 3 and REACH regulations for safe, sustainable industrial use
• Reliable performance in demanding applications due to standardized inch measurements and material consistency

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 0.105" inner diameter and 0.25" outer diameter provide optimal load distribution for No. 3 screw applications, preventing surface indentation and joint failure in aerospace, marine, and industrial equipment. The Rockwell B70 hardness ensures consistent performance under vibration and thermal stress, while the passivated surface treatment creates a protective oxide layer that withstands chemical exposure and atmospheric corrosion. Manufactured to NAS1149-CN332R and AN960-C3 specifications, these washers meet the stringent requirements of defense, aviation, and precision machinery sectors where fastener reliability cannot be compromised.

Specification Summary & Compliance

This flat washer features inch system dimensions with 0.105" ID, 0.25" OD, and thickness ranging 0.028-0.036". Manufactured from 18-8 stainless steel with passivated finish, it maintains Rockwell B70 hardness and complies with NAS1149-CN332R and AN960-C3 aerospace standards. The product is fully RoHS 3 (2015/863/EU) compliant and REACH (EC 1907/2006) compliant with current SVHC requirements, ensuring environmental responsibility and regulatory adherence for global industrial applications.