S-5185N112 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 environments
• Black-oxide steel construction provides excellent corrosion resistance and durability
• Rockwell C38 hardness rating ensures long-term performance under heavy loads
• Precision-engineered split design creates constant spring tension for reliable locking action
• ASME B18.21.1 compliance guarantees dimensional accuracy and interchangeability
• RoHS 3 and REACH compliance meets international environmental and safety standards
• Optimized dimensions (0.322" ID, 0.583" OD) ensure perfect fit for 5/16" fasteners

Professional Applications & Engineering Value

This heavy-duty split lock washer delivers exceptional engineering value in applications where vibration-induced loosening compromises assembly integrity. The black-oxide steel material provides superior corrosion protection while maintaining the Rockwell C38 hardness necessary for repeated compression cycles. The precision split design creates continuous spring tension that counters rotational forces in machinery, automotive, and industrial equipment. Engineered to ASME B18.21.1 standards, this 5/16" split lock washer ensures dimensional consistency across replacement parts and new assemblies, reducing maintenance downtime and improving operational safety in demanding environments.

Specification Summary & Compliance

This standard split lock washer features precise dimensions: 0.322" inner diameter, 0.583" outer diameter, and 0.078" thickness, specifically engineered for 5/16" screw applications. Manufactured to ASME B18.21.1 specifications with Rockwell C38 hardness, the component ensures reliable performance in inch-system assemblies. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, meeting the latest environmental and safety standards for industrial components.