S-91757A113 0.384" ID x 0.692" 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 through internal tooth design that bites into mating surfaces, preventing loosening under dynamic loads
- Excellent corrosion resistance with 18-8 stainless steel construction, ideal for harsh industrial environments
- Precise dimensional compatibility with 0.384" ID and 0.692" OD ensuring perfect fit for 3/8" fasteners
- Industry-standard compliance with ASME B18.21.1 specifications for reliable performance and interchangeability
- Environmental regulation compliance meeting RoHS 3 and REACH standards for global manufacturing applications
- Consistent thickness control between 0.032-0.040" for uniform clamping force distribution
- Internal tooth configuration provides concentrated locking pressure while protecting visible surfaces from damage
Professional Applications & Engineering Value
These 18-8 stainless steel internal tooth lock washers deliver exceptional engineering value in applications where vibration-induced loosening compromises assembly integrity. The internal tooth design creates multiple biting points that dig into both the fastener and workpiece, maintaining clamping force in high-vibration environments like machinery, automotive systems, and electrical enclosures. The 3/8" size compatibility with precise 0.384" ID and 0.692" OD dimensions ensures proper seating without interference. Manufactured from corrosion-resistant 18-8 stainless steel, these washers withstand exposure to moisture, chemicals, and temperature variations, making them ideal for food processing equipment, marine applications, and outdoor installations where reliability is critical.
Specification Summary & Compliance
This tooth lock washer features inch system dimensions with 0.384" internal diameter, 0.692" outer diameter, and thickness ranging 0.032-0.040". Manufactured to ASME B18.21.1 standards for dimensional accuracy and performance consistency. The product 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. Designed specifically for 3/8" screw applications with internal tooth configuration for optimal locking performance.
