S-91104A030 0.322" ID x 0.583" OD ASME B18.21.1 Split Lock Washers

Key Features & Benefits at a Glance

• Superior vibration resistance prevents fastener loosening in high-stress industrial applications
• Grade 8 strength classification ensures reliable performance under extreme mechanical loads
• Zinc yellow-chromate plating provides excellent corrosion protection in harsh environments
• Rockwell C38 hardness maintains structural integrity and prevents deformation under pressure
• Precision-engineered dimensions (0.322" ID, 0.583" OD) ensure perfect fit for 5/16" screw applications
• ASME B18.21.1 compliance guarantees consistent quality and engineering standards
• REACH compliant construction meets environmental safety regulations for industrial use

Professional Applications & Engineering Value

These Grade 8 split lock washers deliver exceptional engineering value in demanding applications where vibration-induced loosening compromises safety and performance. The zinc yellow-chromate plated steel construction provides dual protection against corrosion while maintaining the Rockwell C38 hardness necessary for heavy-duty mechanical fastening. The split lock design creates continuous spring tension that counters rotational forces in machinery, automotive assemblies, and structural frameworks. Engineered specifically for 5/16" screw applications, these vibration resistant washers maintain clamp load integrity in equipment subject to constant motion, thermal cycling, and dynamic stresses. The standard split lock washer type ensures immediate installation compatibility while the ASME B18.21.1 specification guarantees dimensional precision and performance reliability across industrial maintenance and manufacturing operations.

Specification Summary & Compliance

This split lock washer features precise dimensional specifications including 0.322" inner diameter, 0.583" outer diameter, and 0.078" thickness, engineered for optimal performance with 5/16" fasteners. Manufactured to ASME B18.21.1 standards with Grade 8 strength classification and Rockwell C38 hardness verification. The product is fully REACH compliant (EC 1907/2006) as of June 14, 2023, meeting environmental safety requirements for 235 SVHC substances. The standard split lock washer type ensures consistent performance across industrial applications requiring reliable vibration resistance.