S-91475A274 0.193" ID x 0.334" OD ASME B18.21.1; MS35338-43 Mil. Spec. Split Lock Washers

Key Features & Benefits at a Glance

• Superior vibration resistance prevents fastener loosening in high-stress applications, ensuring long-term assembly integrity
• Zinc yellow-chromate plated steel construction provides excellent corrosion resistance for extended service life in demanding environments
• Rockwell C38 hardness rating delivers exceptional durability and maintains locking performance under repeated stress cycles
• Precision 0.193" ID and 0.334" OD dimensions ensure perfect fit for No. 10 screws, eliminating installation issues
• ASME B18.21.1 and MS35338-43 compliance guarantees consistent quality and interoperability with standard industrial components
• Standard split lock design offers reliable spring action that maintains constant tension against fastener heads
• Inch system compatibility seamlessly integrates with existing North American equipment and fastener inventories

Professional Applications & Engineering Value

These No. 10 split lock washers deliver critical vibration-damping performance in industrial settings where mechanical stability is paramount. The zinc yellow-chromate plated steel material provides dual protection against corrosion and wear, significantly extending maintenance intervals in harsh operating conditions. The standard split lock washer design creates continuous outward pressure that counters rotational forces, effectively preventing spontaneous fastener loosening in machinery, automotive assemblies, and electrical enclosures. Engineered to ASME B18.21.1 specifications, these washers ensure dimensional consistency and reliable performance across batch productions, making them ideal for OEM manufacturing and MRO applications where fastener failure is not an option.

Specification Summary & Compliance

This split lock washer features precise dimensional tolerances with 0.193" inner diameter, 0.334" outer diameter, and 0.047" thickness specifically designed for No. 10 screw applications. Manufactured in compliance with ASME B18.21.1 and MS35338-43 standards, ensuring consistent quality and performance. The Rockwell C38 hardness provides optimal spring characteristics while the zinc yellow-chromate plating offers superior corrosion protection. These washers are suitable for use in various industrial applications requiring reliable vibration-resistant locking solutions.