S-91757A107 0.195" ID x 0.381" OD ASME B18.21.1 Internal-Tooth Lock Washers

Key Features & Benefits at a Glance

• Superior vibration resistance with internal teeth that bite into mating surfaces to prevent loosening under dynamic loads
• Excellent corrosion resistance from 18-8 stainless steel construction for long-term reliability in harsh environments
• Precise dimensional compatibility with No. 10 screws through 0.195" ID and 0.381" OD for secure fitment
• Industry-standard compliance with ASME B18.21.1 specifications ensuring consistent performance and interchangeability
• Enhanced safety and reliability with RoHS 3 and REACH compliance for environmentally responsible manufacturing
• Optimized load distribution through controlled thickness (0.018-0.024") for uniform pressure across fastened components
• Reduced maintenance requirements through durable stainless steel construction that resists wear and degradation

Professional Applications & Engineering Value

This internal tooth lock washer delivers critical vibration-resistant performance in demanding industrial applications where secure fastening is paramount. The 18-8 stainless steel construction provides exceptional corrosion resistance, making it ideal for machinery, electrical enclosures, and outdoor equipment exposed to moisture and chemicals. The precisely engineered internal teeth create superior locking action by biting into both the screw head and mating surface, effectively preventing rotational loosening caused by vibration and thermal cycling. Manufactured to ASME B18.21.1 standards, this No. 10 tooth lock washer ensures reliable performance in inch-system applications across automotive, manufacturing, and heavy equipment industries where fastener integrity cannot be compromised.

Specification Summary & Compliance

This internal tooth lock washer features precise dimensional specifications including 0.195" ID, 0.381" OD, and thickness range of 0.018-0.024" specifically designed for No. 10 screws. Manufactured in compliance with ASME B18.21.1 mechanical standards for tooth lock washers. The product meets RoHS 3 (2015/863/EU) compliance for hazardous substance restrictions and REACH (EC 1907/2006) compliance for chemical safety, ensuring environmental responsibility and regulatory acceptance in global markets.