S-91007A652 0.512" ID x 0.879" OD ASME B18.21.1 Oversized Split Lock Washers

Key Features & Benefits at a Glance

• Superior vibration resistance through spring-like split design that maintains constant tension under dynamic loads
• Exceptional corrosion resistance with 18-8 stainless steel construction for long-lasting performance in harsh environments
• Optimized dimensional accuracy with 0.512" ID and 0.879" OD ensuring perfect fit for 1/2" screw applications
• Enhanced durability with Rockwell C35 hardness providing reliable performance under repeated stress cycles
• Industry-standard compliance meeting ASME B18.21.1 specifications for consistent quality and interchangeability
• Environmental responsibility with RoHS 3 and REACH compliance for safe use in regulated industries
• Reliable locking action through standard split design that prevents fastener loosening in high-vibration applications

Professional Applications & Engineering Value

This 18-8 stainless steel split lock washer delivers critical vibration-resistant performance for demanding industrial applications where fastener security is paramount. The standard split lock washer type creates continuous spring tension against both the bearing surface and fastener head, effectively preventing loosening in machinery, automotive assemblies, and heavy equipment subjected to constant vibration and thermal cycling. The 0.512" ID provides precise fitment for 1/2" screws, while the corrosion-resistant properties of 18-8 stainless steel ensure long-term reliability in challenging environments including marine, chemical processing, and outdoor applications. This split lock washer solves critical assembly challenges by maintaining joint integrity where traditional fasteners would fail, reducing maintenance costs and preventing equipment downtime.

Specification Summary & Compliance

This precision-engineered split lock washer features exact dimensional specifications including 0.512" inner diameter, 0.879" outer diameter, and 0.151" thickness, manufactured to ASME B18.21.1 standards for consistent performance and interchangeability. The washer maintains dimensional accuracy suitable for Class 2A thread fits and meets comprehensive regulatory requirements including RoHS 3 (2015/863/EU) compliance and REACH (EC 1907/2006) compliance with current SVHC reporting. Manufactured from 18-8 stainless steel with Rockwell C35 hardness, this industrial-grade locking solution delivers reliable performance across mechanical assemblies requiring vibration-resistant fastening systems.