S-97775A517 1.025" ID x 1.62" OD ASME B18.21.1; MS35335-70 Mil. Spec. External-Tooth Lock Washers

Key Features & Benefits at a Glance

• Superior vibration resistance with external teeth that bite into mating surfaces to prevent loosening under dynamic loads
• Exceptional corrosion resistance provided by 410 stainless steel construction for long-term reliability in harsh environments
• Optimized for 1" screw applications with precise 1.025" ID and 1.62" OD dimensions ensuring perfect fit and maximum holding power
• Enhanced durability with Rockwell C40 hardness maintaining tooth integrity and locking performance through repeated use
• Industry-standard compliance meeting both ASME B18.21.1 and MS35335-70 specifications for guaranteed quality and interchangeability
• Environmental responsibility with full RoHS 3 and REACH compliance, ensuring safe use in regulated applications
• Reliable performance through controlled thickness (0.059-0.067") ensuring consistent compression and locking force

Professional Applications & Engineering Value

This 410 stainless steel external tooth lock washer delivers critical vibration-resistant performance for demanding industrial applications where fastener security is paramount. The external tooth configuration creates multiple biting points that dig into both the fastener head and base material, effectively preventing rotation and backing out in high-vibration environments such as heavy machinery, automotive assemblies, and power transmission systems. The Rockwell C40 hardness ensures teeth maintain their sharpness and locking capability through multiple installation cycles, while the corrosion-resistant 410 stainless steel construction provides long-term reliability in exposed or chemically aggressive environments. Engineered specifically for 1" screw applications, this washer solves common loosening problems in critical joints, reducing maintenance frequency and preventing costly downtime in industrial operations.

Specification Summary & Compliance

This precision external tooth lock washer features dimensional accuracy with 1.025" ID, 1.62" OD, and thickness range of 0.059-0.067" specifically designed for 1" screw size applications. Manufactured to exacting ASME B18.21.1 and MS35335-70 standards, ensuring proper tooth geometry and mechanical properties. The washer is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, meeting the latest environmental and safety requirements for industrial components.