S-92164A334 0.221" ID x 0.475" OD ASME B18.21.1 External-Tooth Lock Washers

Key Features & Benefits at a Glance

• Superior vibration resistance through external tooth design that bites into mating surfaces, preventing loosening under dynamic loads
• Excellent corrosion resistance from bronze construction, ideal for harsh industrial environments and marine applications
• Consistent locking performance with Rockwell B60 hardness providing optimal spring tension and durability
• Precise dimensional fit with 0.221" ID and 0.475" OD ensuring proper installation for No. 12 screws
• Regulatory compliance assurance meeting RoHS 3 and REACH standards for global manufacturing applications
• Industry-standard reliability manufactured to ASME B18.21.1 specifications for consistent quality and performance
• Reduced maintenance requirements through bronze material's natural lubricity and wear resistance

Professional Applications & Engineering Value

This bronze external tooth lock washer delivers critical vibration resistance in demanding industrial applications where fastener security is paramount. The external tooth configuration creates multiple biting points that dig into both the bearing surface and fastener head, effectively preventing rotation and backing out under continuous vibration. Made from bronze material with Rockwell B60 hardness, these washers maintain their spring tension and locking capability through thermal cycling and corrosive exposure. Ideal for electrical connections, marine hardware, pump assemblies, and rotating equipment, the bronze construction provides natural corrosion resistance while the precise 0.221" ID x 0.475" OD dimensions ensure perfect fitment for No. 12 fasteners in inch-system applications. The combination of material properties and tooth design addresses common failure points in vibration-prone assemblies, extending service life and reducing maintenance downtime.

Specification Summary & Compliance

This external tooth lock washer features precise dimensional specifications including 0.221" inner diameter, 0.475" outer diameter, and thickness ranging from 0.020" to 0.027". Manufactured to ASME B18.21.1 standards for tooth lock washers, it ensures consistent performance and interchangeability. The product maintains full compliance with RoHS 3 (2015/863/EU) regulations and REACH (EC 1907/2006) requirements, including the latest SVHC updates. The bronze material achieves Rockwell B60 hardness for optimal spring performance, while the external tooth location provides maximum locking effectiveness for No. 12 screw sizes in inch measurement system applications.