S-97527A011 0.384" ID x 1.01" OD Internal-Tooth Lock Washers for Soft Material

Key Features & Benefits at a Glance

• Superior vibration resistance with internal teeth that bite into mating surfaces, preventing loosening under dynamic loads
• Enhanced corrosion protection through zinc-plated steel construction, extending service life in harsh environments
• Exceptional hardness (Rockwell C44) maintains tooth integrity and locking performance under high stress
• Precise dimensional fit with 0.384" ID and 1.01" OD ensuring compatibility with 3/8" fasteners
• Consistent thickness control (0.060-0.064") provides uniform clamping force and reliable performance
• Regulatory compliance meets RoHS 3 and REACH standards for global industrial applications
• Internal tooth design concentrates locking force directly under fastener head for maximum security

Professional Applications & Engineering Value

These internal tooth lock washers deliver critical vibration resistance in demanding industrial environments where fastener security is paramount. The zinc-plated steel construction provides dual benefits: the base material offers structural strength while the plating creates a protective barrier against corrosion, making them ideal for outdoor equipment, machinery, and automotive assemblies exposed to moisture and chemicals. The internal tooth configuration ensures maximum surface contact and biting action directly beneath the fastener head, effectively preventing rotation and loosening caused by continuous vibration or thermal cycling. With Rockwell C44 hardness, these washers maintain their locking teeth integrity even under repeated loading cycles, eliminating the need for frequent retightening in critical 3/8" fastener applications across manufacturing, construction, and heavy equipment sectors.

Specification Summary & Compliance

This tooth lock washer features inch system dimensions with precise internal diameter of 0.384" and outer diameter of 1.01", specifically engineered for 3/8" screw sizes. The consistent thickness range of 0.060-0.064" ensures reliable performance across applications. Manufactured to industry standards for internal tooth lock washers, these components are fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, meeting the latest environmental and safety requirements for industrial use worldwide.