S-91007A676 0.641" ID x 1.087" OD ASME B18.21.1 Oversized Split Lock Washers

Key Features & Benefits at a Glance

• Superior vibration resistance prevents fastener loosening in high-stress environments
• Durable 18-8 stainless steel construction provides excellent corrosion resistance for long service life
• Rockwell C35 hardness rating ensures consistent spring tension and reliable locking performance
• Precision-engineered dimensions (0.641" ID, 1.087" OD) guarantee perfect fit for 5/8" fasteners
• ASME B18.21.1 compliance ensures consistent quality and interchangeability
• RoHS 3 and REACH compliance meets international environmental and safety standards
• Standard split lock design offers easy installation and removal while maintaining secure locking

Professional Applications & Engineering Value

These 18-8 stainless steel split lock washers deliver exceptional engineering value in demanding industrial environments where vibration-induced fastener failure is a critical concern. The split lock washer type creates continuous spring tension that compensates for thermal expansion, material relaxation, and mechanical vibrations. The Rockwell C35 hardness ensures the washer maintains its spring properties under repeated loading cycles, while the corrosion-resistant 18-8 stainless steel material makes these washers ideal for outdoor equipment, marine applications, food processing machinery, and chemical processing plants where moisture and corrosive elements are present. The precise 5/8" sizing and ASME B18.21.1 standard compliance guarantee reliable performance in automotive assemblies, heavy machinery, structural frameworks, and industrial maintenance applications requiring dependable vibration-resistant fastening solutions.

Specification Summary & Compliance

This split lock washer features precise dimensional specifications including 0.641" inner diameter, 1.087" outer diameter, and 0.189" thickness, engineered for 5/8" screw applications. Manufactured to ASME B18.21.1 standards for dimensional accuracy and performance requirements, these washers maintain consistent quality and interchangeability. The product fully complies with RoHS 3 (2015/863/EU) restrictions on hazardous substances and meets REACH (EC 1907/2006) requirements for chemical safety, including compliance with the latest SVHC list (updated 06/14/2023, 235 substances). The standard split lock washer type ensures reliable spring action and vibration resistance across industrial applications.