S-97527A005 0.195" ID x 0.569" OD Internal-Tooth Lock Washers for Soft Material

Key Features & Benefits at a Glance

• Superior vibration resistance through internal tooth design that bites into mating surfaces to prevent loosening under dynamic loads
• Enhanced corrosion protection with zinc-plated steel construction for extended service life in harsh industrial environments
• Precision dimensional fit with 0.195" ID and 0.569" OD ensuring perfect compatibility with No. 10 screws
• Exceptional hardness performance rated at Rockwell C44 for maintaining tooth integrity under high clamping forces
• Optimized thickness control between 0.027-0.031" for consistent compression and reliable locking action
• Regulatory compliance assurance meeting RoHS 3 and REACH standards for global manufacturing applications
• Internal tooth location providing concentrated locking force directly beneath the screw head for maximum fastening security

Professional Applications & Engineering Value

These zinc-plated steel internal tooth lock washers deliver critical vibration resistance in demanding mechanical assemblies where No. 10 screws require permanent security. The internal tooth design creates multiple biting points that dig into both the fastener and workpiece, effectively preventing rotational loosening caused by machinery vibration, thermal cycling, or dynamic loading conditions. The Rockwell C44 hardness ensures teeth maintain their sharpness through repeated installation cycles, while the zinc plating provides essential corrosion protection for outdoor equipment, automotive components, and industrial machinery. Engineered for precision fit with consistent 0.195" ID and 0.569" OD dimensions, these tooth lock washers eliminate the need for additional locking mechanisms, reducing assembly time and improving reliability in critical fastening applications.

Specification Summary & Compliance

This internal tooth lock washer features precision inch dimensions with 0.195" internal diameter, 0.569" outer diameter, and controlled thickness between 0.027-0.031". Manufactured from zinc-plated steel with Rockwell C44 hardness rating, the washer meets industry standards for vibration-resistant fastening. The product is fully RoHS 3 (2015/863/EU) compliant and REACH (EC 1907/2006) compliant (including 233 SVHCs as of 01/17/2023), ensuring environmental regulatory adherence for global supply chain requirements.