S-5185N129 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
• Zinc-flake-coated steel construction provides excellent corrosion protection and extended service life
• Rockwell C38 hardness rating ensures consistent spring tension and reliable locking performance
• ASME B18.21.1 compliance guarantees dimensional accuracy and interchangeability with standard fasteners
• Precise 5/16" screw size compatibility ensures perfect fit and optimal clamping force distribution
• RoHS 3 and REACH compliance meets international environmental regulations for safe industrial use
• Standard split lock design offers easy installation and cost-effective vibration protection

Professional Applications & Engineering Value

This heavy-duty split lock washer addresses critical vibration-induced loosening challenges in demanding industrial applications. The zinc-flake-coated steel material provides superior corrosion resistance while maintaining the necessary spring characteristics for reliable locking action. Engineered to ASME B18.21.1 standards, this washer delivers consistent performance in machinery assembly, automotive manufacturing, and heavy equipment applications where vibration resistance is paramount. The combination of Rockwell C38 hardness and precise dimensional tolerances ensures optimal spring tension that maintains fastener security under dynamic loads, making it ideal for critical joints in construction equipment, industrial machinery, and transportation systems where safety and reliability cannot be compromised.

Specification Summary & Compliance

This split lock washer features precise dimensions of 0.322" ID, 0.583" OD, and 0.078" thickness, designed specifically for 5/16" screw applications. Manufactured in compliance with ASME B18.21.1 standards for dimensional accuracy and performance requirements. The product meets RoHS 3 (2015/863/EU) compliance and REACH (EC 1907/2006) regulations regarding substance restrictions, ensuring environmental responsibility and workplace safety. The standard split lock washer type with inch system measurements guarantees compatibility with North American fastener systems and industrial specifications.