S-91475A257 0.141" ID x 0.25" OD ASME B18.21.1; MS35338-41 Mil. Spec. Split Lock Washers

Key Features & Benefits at a Glance

• Superior vibration resistance prevents fastener loosening in high-stress environments, ensuring long-term assembly integrity
• Zinc yellow-chromate plated steel construction provides excellent corrosion resistance for extended service life in demanding conditions
• Rockwell C38 hardness rating delivers exceptional durability and maintains spring tension under repeated loading
• Precision 0.141" ID and 0.25" OD dimensions ensure perfect fit and optimal locking performance for No. 6 screw applications
• ASME B18.21.1 and MS35338-41 compliance guarantees consistent quality and reliable performance meeting industry standards
• 0.031" thickness design provides optimal spring action while maintaining compatibility with standard fastener configurations
• Standard split lock configuration offers easy installation and reliable locking action across various industrial applications

Professional Applications & Engineering Value

This split lock washer delivers critical vibration-resistant performance for industrial assemblies where mechanical fasteners face constant stress and movement. Engineered from zinc yellow-chromate plated steel, it provides dual protection against corrosion and loosening, making it ideal for automotive components, machinery assemblies, and electrical enclosures. The Rockwell C38 hardness ensures the washer maintains its spring tension through thermal cycling and dynamic loads, while the precision 0.141" ID guarantees secure fitment on No. 6 screws. This combination of material strength and dimensional accuracy solves common industrial challenges of maintenance reduction and assembly reliability in vibration-prone environments.

Specification Summary & Compliance

This split lock washer features precise dimensional specifications with 0.141" inner diameter, 0.25" outer diameter, and 0.031" thickness, engineered for No. 6 screw size applications. Manufactured to meet ASME B18.21.1 and MS35338-41 standards, ensuring consistent quality and performance. The zinc yellow-chromate plated steel construction provides corrosion resistance while maintaining Rockwell C38 hardness for reliable spring action. Complies with industry standards for mechanical fasteners and is suitable for various industrial applications requiring vibration-resistant locking solutions.