S-95584A211 0.384" ID x 0.694" OD ASME B18.21.1 External-Tooth Lock Washers

Key Features & Benefits at a Glance

• Superior vibration resistance with external teeth that bite into mating surfaces, preventing loosening under dynamic loads
• Excellent corrosion resistance from 18-8 Stainless Steel construction, ideal for humid or chemically aggressive environments
• Precision fit for 3/8" fasteners with 0.384" ID ensuring secure installation and uniform load distribution
• Reliable compliance with ASME B18.21.1 standards for consistent performance and interchangeability
• Enhanced safety with RoHS 3 and REACH compliance, eliminating hazardous substances in industrial settings
• Optimized tooth engagement through external tooth design that maximizes surface contact and locking effectiveness
• Durable thin profile with 0.032-0.040" thickness providing space efficiency without compromising locking strength

Professional Applications & Engineering Value

This 3/8" external tooth lock washer delivers critical vibration-resistant fastening in demanding industrial applications where joint integrity is paramount. Manufactured from 18-8 Stainless Steel, it provides exceptional corrosion resistance for machinery exposed to moisture, chemicals, or outdoor elements. The external tooth configuration creates multiple biting points that dig into both the fastener head and base material, effectively resisting rotational forces and preventing spontaneous loosening in high-vibration environments like automotive assemblies, heavy equipment, and power transmission systems. This ASME B18.21.1 compliant washer ensures dimensional consistency and reliable performance across industrial maintenance, manufacturing, and construction applications where fastener security cannot be compromised.

Specification Summary & Compliance

This washer features precise dimensions with 0.384" inner diameter, 0.694" outer diameter, and 0.032-0.040" thickness range, engineered specifically for 3/8" screw applications. Manufactured in compliance with ASME B18.21.1 standards for tooth lock washers, ensuring dimensional accuracy and performance reliability. The product is RoHS 3 (2015/863/EU) compliant and REACH (EC 1907/2006) compliant (as of 06/14/2023, 235 SVHC), meeting international environmental and safety regulations for industrial components.