S-91104A050 1.153" ID x 1.903" OD ASME B18.21.1 Oversized Split Lock Washers

Key Features & Benefits at a Glance

• Superior vibration resistance prevents fastener loosening in high-stress applications
• Grade 8 strength rating ensures reliable performance in heavy-duty industrial environments
• Zinc yellow-chromate plating provides excellent corrosion protection for extended service life
• Rockwell C38 hardness maintains structural integrity under extreme pressure and load conditions
• ASME B18.21.1 compliance guarantees precise dimensional accuracy and consistent quality
• REACH compliant construction meets stringent environmental and safety standards
• Optimized for 1 1/8" screws with precise 1.153" ID and 1.903" OD dimensions for perfect fit

Professional Applications & Engineering Value

This split lock washer delivers critical engineering solutions where vibration-induced fastener failure poses significant operational risks. The Grade 8 steel construction with Rockwell C38 hardness provides exceptional spring tension that maintains constant pressure on fastened joints, effectively countering rotational forces in heavy machinery, construction equipment, and automotive assemblies. The zinc yellow-chromate plating offers superior corrosion resistance in demanding industrial environments, while the precisely engineered split design creates continuous spring action that compensates for thermal expansion and material relaxation. Engineered to ASME B18.21.1 standards, this washer ensures dimensional consistency and reliable performance in critical 1 1/8" screw applications across manufacturing, infrastructure, and mechanical systems.

Specification Summary & Compliance

This heavy-duty split lock washer features precise dimensions of 1.153" ID x 1.903" OD with 0.345" thickness, manufactured to exacting ASME B18.21.1 specifications for dimensional accuracy and performance consistency. The component meets Grade 8 strength classification requirements and maintains Rockwell C38 hardness for optimal spring performance. Environmental compliance includes full adherence to REACH (EC 1907/2006) regulations (06/14/2023, 235 SVHC compliant), ensuring safe use across industrial applications while meeting international environmental standards.