S-91104A029 0.26" ID x 0.487" OD ASME B18.21.1 Split Lock Washers

Key Features & Benefits at a Glance

• Superior vibration resistance prevents fastener loosening in high-stress applications
• Grade 8 strength classification ensures reliable performance in heavy-duty industrial environments
• Zinc yellow-chromate plating provides excellent corrosion resistance for extended service life
• Rockwell C38 hardness maintains structural integrity under repeated loading cycles
• ASME B18.21.1 compliance guarantees dimensional accuracy and interchangeability
• REACH compliance ensures environmental responsibility and workplace safety
• Precise 1/4" sizing delivers optimal fit and consistent locking performance

Professional Applications & Engineering Value

This Grade 8 split lock washer addresses critical vibration-induced fastener failure in demanding industrial applications. The zinc yellow-chromate plated steel construction combines corrosion protection with the mechanical strength needed for machinery, automotive assemblies, and structural frameworks. The split lock design creates continuous spring tension that compensates for thermal expansion and dynamic loads, maintaining clamp force where standard washers fail. With Rockwell C38 hardness and precise ASME B18.21.1 specifications, these washers deliver predictable performance in heavy equipment, manufacturing systems, and transportation applications where vibration resistance is paramount to operational safety and maintenance intervals.

Specification Summary & Compliance

Manufactured to ASME B18.21.1 standards with precise dimensions (0.26" ID × 0.487" OD × 0.062" thickness) for 1/4" fasteners. Features Grade 8 strength classification and Rockwell C38 hardness rating. Compliant with REACH (EC 1907/2006) regulations regarding substance restrictions. The standard split lock configuration ensures consistent spring action and reliable locking performance across industrial applications.