S-91150A110 0.256" ID x 0.536" OD ASME B18.21.1 Internal-Tooth Lock Washers
Internal-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 internal teeth that bite into mating surfaces, preventing loosening under dynamic loads
- Exceptional durability with Rockwell C44 hardness, maintaining tooth integrity and locking performance through repeated use
- Heavy-duty Grade 8 strength rating ensures reliable performance in high-stress industrial applications
- Corrosion-resistant zinc-plated steel construction provides lasting protection in demanding environments
- Precision-engineered dimensions (0.256" ID, 0.536" OD) ensure perfect fit for 1/4" fasteners
- Industry-standard compliance with ASME B18.21.1 specifications for guaranteed quality and interchangeability
- Environmental responsibility with RoHS 3 and REACH compliance for safe use across regulated industries
Professional Applications & Engineering Value
These Grade 8 tooth lock washers solve critical vibration-induced loosening problems in heavy machinery, automotive assemblies, and structural applications. The internal tooth design creates multiple biting points that dig into both the fastener and workpiece, maintaining clamping force where standard washers fail. The zinc-plated steel construction combines the strength of high-carbon steel with corrosion resistance, making these heavy-duty lock washers ideal for outdoor equipment, manufacturing plants, and transportation systems. With Rockwell C44 hardness, the teeth resist deformation under extreme loads, ensuring consistent locking performance throughout the product lifecycle in demanding industrial environments.
Specification Summary & Compliance
Manufactured to exact ASME B18.21.1 specifications with precise dimensional tolerances (ID: 0.256", OD: 0.536", Thickness: 0.034-0.044") for optimal performance with 1/4" fasteners. These tooth lock washers meet Grade 8 strength requirements and maintain full compliance with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental standards, ensuring they're suitable for use in regulated industries worldwide.
