S-95584A315 0.168" ID x 0.381" OD ASME B18.21.1 External-Tooth Lock Washers

Key Features & Benefits at a Glance

• Superior vibration resistance with external teeth that bite into mating surfaces, preventing loosening under dynamic loads
• Exceptional corrosion resistance thanks to Black Oxide coated 18-8 Stainless Steel construction for harsh environments
• Enhanced durability with Rockwell B88 hardness, maintaining tooth integrity and locking performance
• Precise No. 8 screw compatibility with 0.168" ID for secure fit and optimal load distribution
• Reliable industrial performance backed by ASME B18.21.1 standard compliance for consistent quality
• Environmental compliance assurance meeting RoHS 3 and REACH regulations for global supply chain compatibility
• Optimized tooth engagement with external tooth location providing maximum surface contact and locking force

Professional Applications & Engineering Value

This external tooth lock washer delivers critical vibration-resistant fastening solutions for demanding industrial applications. The Black Oxide 18-8 Stainless Steel construction provides excellent corrosion resistance in chemical, marine, and outdoor environments where standard fasteners fail. With external teeth that aggressively bite into both the bearing surface and fastener head, it effectively prevents rotational loosening in high-vibration machinery, automotive assemblies, and electrical enclosures. The 0.168" ID precisely matches No. 8 screw sizes, ensuring proper installation without compromising the locking washer's structural integrity. Engineering teams specify this component for critical joints where maintenance access is limited and fastener failure would result in costly downtime or safety hazards.

Specification Summary & Compliance

This washer features dimensional precision with 0.168" internal diameter, 0.381" outer diameter, and thickness ranging 0.018-0.023". Manufactured to ASME B18.21.1 standards for tooth lock washers, ensuring consistent performance and interchangeability. The component is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, containing no substances of very high concern above threshold limits. Material certification confirms 18-8 Stainless Steel composition with Black Oxide surface treatment and Rockwell B88 hardness verification.