S-5185N118 0.766" ID x 1.265" 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 3/4" screw compatibility with 0.766" ID for accurate fit and reliable locking action
• ASME B18.21.1 compliance guarantees consistent quality and engineering standards
• RoHS 3 and REACH compliant for environmentally responsible manufacturing and global acceptance
• Standard split lock design delivers proven spring tension for secure fastening applications

Professional Applications & Engineering Value

This heavy-duty split lock washer addresses critical vibration-induced loosening in industrial machinery, automotive assemblies, and construction equipment. The black-oxide steel material provides superior corrosion protection while maintaining the necessary spring tension for reliable locking performance. Engineered to ASME B18.21.1 standards, this washer delivers consistent dimensional accuracy and mechanical properties essential for vibration-resistant applications. The Rockwell C38 hardness ensures the washer maintains its spring characteristics under repeated loading cycles, making it ideal for heavy machinery, power transmission systems, and structural assemblies where fastener security is paramount. The split lock design creates continuous spring force that compensates for thermal expansion and vibration, preventing catastrophic fastener failure in critical applications.

Specification Summary & Compliance

This split lock washer features precise dimensions: 0.766" inner diameter, 1.265" outer diameter, and 0.188" thickness, specifically designed for 3/4" screw size applications. Manufactured to ASME B18.21.1 specifications with Rockwell C38 hardness for consistent performance. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental responsibility and global market acceptance. The standard split lock washer type provides reliable spring action in inch system applications across various industrial sectors.