S-97775A515 0.768" ID x 1.26" OD ASME B18.21.1; MS35335-68 Mil. Spec. External-Tooth Lock Washers

Key Features & Benefits at a Glance

• Superior vibration resistance with external tooth design that bites into mating surfaces to prevent loosening under dynamic loads
• Exceptional corrosion resistance from 410 stainless steel construction, ideal for harsh industrial environments
• Enhanced durability and wear resistance with Rockwell C40 hardness for long service life
• Precise dimensional compatibility with 0.768" ID and 1.26" OD designed specifically for 3/4" fasteners
• Reliable performance assurance through compliance with ASME B18.21.1 and MS35335-68 standards
• Environmental compliance meeting RoHS 3 and REACH requirements for safe industrial use
• Consistent thickness control between 0.047-0.055" ensures uniform clamping force distribution

Professional Applications & Engineering Value

This 3/4" tooth lock washer delivers critical vibration-resistant performance in demanding industrial applications where fastener security is paramount. The 410 stainless steel construction provides excellent corrosion resistance for outdoor equipment, marine environments, and chemical processing facilities. The external tooth design creates multiple biting points that dig into both the fastener and work surface, effectively preventing rotational loosening caused by machinery vibration, thermal cycling, and dynamic loading conditions. Engineered to ASME B18.21.1 and MS35335-68 specifications, this washer ensures reliable performance in heavy machinery, construction equipment, automotive assemblies, and industrial manufacturing systems where vibration-induced fastener failure can lead to costly downtime and safety hazards.

Specification Summary & Compliance

This tooth lock washer features precise dimensional specifications with 0.768" inner diameter, 1.26" outer diameter, and thickness ranging from 0.047" to 0.055". Manufactured from 410 stainless steel with Rockwell C40 hardness, the washer complies with ASME B18.21.1 and MS35335-68 standards for dimensional accuracy and performance requirements. The product meets RoHS 3 (2015/863/EU) compliance and REACH (EC 1907/2006) environmental regulations, ensuring safe use across various industrial sectors.