S-91475A283 0.252" ID x 0.487" OD ASME B18.21.1; MS35338-44 Mil. Spec. Split Lock Washers

Key Features & Benefits at a Glance

• Superior vibration resistance through spring-like split design that maintains constant tension under dynamic loads
• Enhanced corrosion protection with zinc yellow-chromate plating that withstands harsh industrial environments
• Reliable hardness performance at Rockwell C38 rating ensures consistent spring action and prevents deformation
• Precise dimensional compatibility with 0.252" ID and 0.487" OD for secure fit on 1/4" screw applications
• Industry-standard compliance meeting ASME B18.21.1 and MS35338-44 specifications for guaranteed quality
• Optimal thickness design at 0.062" provides sufficient spring force without compromising installation space
• Durable steel construction maintains locking performance through repeated assembly and disassembly cycles

Professional Applications & Engineering Value

This split lock washer delivers critical vibration resistance in demanding industrial applications where loosening under dynamic loads poses significant safety and maintenance concerns. The zinc yellow-chromate plated steel construction provides dual protection against corrosion and wear, extending service life in manufacturing equipment, automotive assemblies, and machinery maintenance. Engineered with precise 0.252" ID and 0.487" OD dimensions, it ensures perfect compatibility with 1/4" screw fastening systems while the split design creates continuous spring tension that compensates for thermal expansion, material settling, and vibration-induced slack. The Rockwell C38 hardness maintains structural integrity under repeated stress cycles, making it ideal for assembly lines, power transmission systems, and heavy equipment where reliable locking performance is non-negotiable.

Specification Summary & Compliance

This standard split lock washer features inch system dimensions with 0.252" internal diameter, 0.487" outer diameter, and 0.062" thickness, engineered for precise fit with 1/4" screws. Manufactured to ASME B18.21.1 dimensional standards and military specification MS35338-44, ensuring consistent quality and performance across industrial applications. The zinc yellow-chromate plating provides corrosion resistance while maintaining electrical conductivity where required. All materials and processes comply with industrial safety and environmental standards for reliable integration into various assembly requirements.