S-95795A035 0.512" ID x 1.26" OD ASME B18.21.1 Internal / External-Tooth Lock Washers

Key Features & Benefits at a Glance

• Superior vibration resistance with dual internal and external teeth that bite into mating surfaces to prevent loosening under heavy loads
• Enhanced corrosion protection through zinc-plated steel construction, extending service life in demanding industrial environments
• Exceptional hardness rating of Rockwell C40 ensures minimal deformation and maintains locking force under repeated stress
• Precise dimensional compatibility with 1/2" fasteners (0.512" ID, 1.26" OD) for reliable fit and optimal load distribution
• Industry-standard compliance with ASME B18.21.1 specifications guarantees consistent performance and interchangeability
• Environmental regulation adherence through RoHS 3 and REACH compliance for safe use in regulated applications
• Optimized thickness range (0.048-0.052") provides consistent compression and reliable spring action

Professional Applications & Engineering Value

This heavy-duty tooth lock washer addresses critical vibration-induced failure points in industrial assemblies. The zinc-plated steel construction provides essential corrosion resistance while the unique internal/external tooth configuration creates multiple biting surfaces that significantly improve grip compared to standard washers. Engineered to ASME B18.21.1 standards, these washers deliver reliable performance in high-vibration applications such as heavy machinery, automotive assemblies, and structural steel connections. The Rockwell C40 hardness ensures the teeth maintain their biting capability through multiple installation cycles, making them ideal for maintenance applications where components require repeated disassembly and reassembly. This combination of material strength and dual-tooth design provides engineers with a proven solution for preventing costly downtime due to fastener loosening.

Specification Summary & Compliance

This 1/2" tooth lock washer features precise dimensional specifications including 0.512" inner diameter, 1.26" outer diameter, and 0.048-0.052" thickness range. Manufactured to ASME B18.21.1 standards for consistent quality and performance. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, ensuring safe use across various industrial sectors. The zinc-plated steel material provides both corrosion resistance and the necessary hardness (Rockwell C40) to maintain locking effectiveness under vibration and load conditions.