S-95795A112 4.3 mm ID x 15 mm OD Internal / External-Tooth Lock Washers

Key Features & Benefits at a Glance

• Superior vibration resistance through dual internal/external teeth design, preventing fastener loosening in high-stress environments
• Enhanced corrosion protection with zinc-plated steel construction, extending service life in demanding industrial conditions
• Precise M4 compatibility with 4.3mm ID ensuring perfect fit and optimal locking performance for metric fastening systems
• Dual-direction locking action from internal and external teeth providing maximum security against rotational movement
• Regulatory compliance assurance meeting RoHS 3 and REACH standards for safe use in regulated industries
• Consistent performance with thickness range of 1.900mm-2.300mm ensuring reliable compression and spring-back characteristics
• Broad industrial applicability with 15mm OD providing substantial bearing surface for distributed load management

Professional Applications & Engineering Value

These M4 metric tooth lock washers deliver exceptional engineering value through their zinc-plated steel construction and innovative internal/external teeth configuration. The dual-tooth design creates multiple biting surfaces that aggressively grip both the fastener and mating surface, effectively solving common vibration-induced loosening problems in machinery, automotive assemblies, and electrical enclosures. The zinc plating provides sacrificial corrosion protection, making these vibration resistant washers ideal for applications exposed to moisture, temperature variations, and chemical environments. With precise metric dimensions (4.3mm ID, 15mm OD), these washers ensure proper seating and consistent locking force distribution across the fastened joint, significantly enhancing the reliability of your industrial fastening solutions while maintaining compliance with international environmental standards.

Specification Summary & Compliance

This tooth lock washer features metric dimensions with 4.3mm internal diameter and 15mm external diameter, designed specifically for M4 screw applications. The thickness ranges from 1.900mm to 2.300mm to accommodate various compression requirements. Manufactured from zinc-plated steel with dual internal and external teeth configuration, these washers comply with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental safety and regulatory acceptance for industrial applications worldwide.