S-91114A037 0.897" ID x 1.41" OD ASME B18.21.1 External-Tooth Lock Washers

Key Features & Benefits at a Glance

• Superior vibration resistance with external teeth that bite firmly into surfaces, preventing joint loosening in high-stress environments
• Enhanced corrosion protection through zinc-plated steel construction, extending service life in demanding industrial conditions
• Exceptional hardness performance with Rockwell C40 rating, maintaining tooth integrity under repeated loading cycles
• Precision dimensional control with 0.897" ID and 1.41" OD, ensuring perfect fit for 7/8" fasteners and uniform load distribution
• Industry-standard compliance meeting ASME B18.21.1 specifications for reliable performance in mechanical assemblies
• Environmental regulation adherence with RoHS 3 and REACH compliance, suitable for global supply chain requirements
• Optimized thickness range (0.052-0.060") providing consistent compression and reliable locking action

Professional Applications & Engineering Value

This heavy-duty external tooth lock washer delivers critical vibration resistance in demanding mechanical systems where joint integrity is paramount. The zinc-plated steel construction provides essential corrosion protection while maintaining the structural strength needed for industrial applications. External teeth design ensures maximum bite into both bearing surfaces, creating a mechanical lock that prevents rotation and loosening under dynamic loads. Particularly valuable in heavy machinery, automotive assemblies, and construction equipment, this washer addresses the common failure point of bolted connections in high-vibration environments. The Rockwell C40 hardness guarantees that teeth maintain their biting capability through multiple installation cycles, while the precise dimensional tolerances ensure consistent performance across production runs. This combination of material properties and engineered tooth configuration makes it an ideal solution for preventing costly downtime due to fastener failure.

Specification Summary & Compliance

Manufactured to ASME B18.21.1 standards with precise dimensional specifications: 0.897" inner diameter, 1.41" outer diameter, and thickness ranging from 0.052" to 0.060". The external tooth configuration provides optimal locking action for 7/8" fasteners. Full compliance with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations ensures environmental responsibility and global market acceptance. The zinc-plated steel material with Rockwell C40 hardness meets industrial requirements for durability and corrosion resistance in demanding applications.