S-92164A029 0.256" ID x 0.51" OD ASME B18.21.1 External-Tooth Lock Washers
External-Tooth Lock Washers
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Basic Information
Dimension Parameters
Material & Strength Parameters
Installation & Application Parameters
Finish & Compliance Parameters
Special Type Parameters
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Key Features & Benefits at a Glance
- Superior vibration resistance with external teeth that bite into mating surfaces to prevent loosening under dynamic loads
- Excellent corrosion resistance due to bronze construction, ideal for harsh industrial environments
- Durable performance with Rockwell B60 hardness maintaining tooth integrity through repeated use
- Precise dimensional fit with 0.256" ID and 0.51" OD ensuring proper installation on 1/4" fasteners
- Industry-standard compliance meeting ASME B18.21.1 specifications for reliable locking performance
- Environmental responsibility with RoHS 3 and REACH compliance for safe use in regulated applications
- Consistent thickness control (0.023-0.028") providing uniform clamping force and seating
Professional Applications & Engineering Value
This bronze external tooth lock washer delivers critical vibration resistance in demanding industrial applications where fastener security is paramount. The bronze material offers natural corrosion resistance while the external tooth design creates multiple biting points that dig into both the fastener and workpiece surfaces. This dual-action locking mechanism effectively counters rotational forces and vibration-induced loosening in machinery, heavy equipment, and automotive assemblies. The Rockwell B60 hardness ensures teeth maintain their sharpness and locking capability through multiple installation cycles, providing reliable performance in high-vibration environments where standard flat washers would fail. Ideal for industrial applications requiring both locking security and corrosion resistance without galling or seizing issues common with steel alternatives.
Specification Summary & Compliance
Manufactured to ASME B18.21.1 standards with precise dimensions: 0.256" ID, 0.51" OD, and thickness ranging 0.023-0.028" for 1/4" screw applications. The bronze external tooth lock washer features Rockwell B60 hardness and complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, ensuring suitability for industrial applications with strict material compliance requirements.
