S-91113A011 0.195" ID x 0.381" 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 design that bites into mating surfaces to prevent loosening under dynamic loads
- Enhanced corrosion protection through zinc-plated steel construction for extended service life in industrial environments
- Consistent performance with Rockwell C44 hardness ensuring dimensional stability and reliable locking force
- Precision fit with 0.195" ID specifically engineered for No. 10 screws to eliminate play and misalignment
- Industry-standard compliance meeting ASME B18.21.1 specifications for guaranteed quality and interchangeability
- Environmental responsibility with RoHS 3 and REACH compliance for safe use in regulated applications
- Optimized load distribution through 0.381" OD design that spreads clamping force effectively
Professional Applications & Engineering Value
This internal tooth lock washer delivers critical vibration resistance in demanding mechanical assemblies where No. 10 screws require secure fastening. The zinc-plated steel construction provides essential corrosion protection while maintaining the Rockwell C44 hardness needed to withstand repeated stress cycles. Engineered with precision internal teeth, the washer creates positive locking action that prevents rotational loosening in machinery, automotive, and industrial equipment applications. The combination of 0.195" ID and 0.381" OD dimensions ensures perfect alignment with standard No. 10 fasteners while providing sufficient bearing surface. This ASME B18.21.1 compliant solution addresses the critical need for reliable fastening in high-vibration environments where standard washers fail.
Specification Summary & Compliance
This tooth lock washer features precision dimensions with 0.195" internal diameter, 0.381" outer diameter, and thickness ranging 0.018-0.024". Manufactured to ASME B18.21.1 standards for dimensional accuracy and performance reliability. The washer is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental safety and regulatory acceptance for industrial applications worldwide.
