S-97527A003 0.168" ID x 0.569" OD Internal-Tooth Lock Washers for Soft Material

Key Features & Benefits at a Glance

• Superior vibration resistance through internal teeth design that bites into mating surfaces, preventing loosening under dynamic loads
• Enhanced corrosion protection with zinc-plated steel construction for extended service life in industrial environments
• Optimal material hardness at Rockwell C44 ensures teeth maintain gripping force without deformation under pressure
• Precision dimensional control with 0.168" ID and 0.569" OD provides perfect fit for No. 8 screws in inch-system applications
• Consistent performance with thickness maintained between 0.023-0.027" for reliable compression and spring action
• Regulatory compliance assurance meeting RoHS 3 and REACH standards for safe use in regulated industries
• Internal tooth configuration concentrates locking force directly under screw head for maximum fastening security

Professional Applications & Engineering Value

This zinc-plated steel tooth lock washer delivers critical vibration resistance in demanding industrial applications where No. 8 screws require secure fastening. The internal tooth design creates multiple biting points that dig into both the fastener and mating surface, effectively preventing rotational loosening caused by machinery vibration, thermal cycling, or dynamic loads. The Rockwell C44 hardness ensures the teeth maintain their sharpness and gripping capability through repeated stress cycles without flattening. Engineered with precision inch-system dimensions (0.168" ID, 0.569" OD), this internal tooth washer provides reliable performance in automotive assemblies, electrical enclosures, machinery guards, and equipment maintenance where vibration-induced fastener failure poses significant operational risks.

Specification Summary & Compliance

This tooth lock washer features inch-system dimensions with 0.168" internal diameter, 0.569" outer diameter, and controlled thickness between 0.023-0.027". Manufactured from zinc-plated steel with Rockwell C44 hardness, the washer employs an internal tooth location design specifically engineered for No. 8 screw applications. The product maintains compliance with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental safety and suitability for use in regulated industrial sectors.