S-91475A523 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
• Cadmium-plated steel construction provides excellent corrosion protection for extended service life
• Precision 0.141" ID and 0.25" OD dimensions ensure perfect fit for No. 6 screws
• Rockwell C38 hardness rating delivers exceptional durability and spring tension
• ASME B18.21.1 and MS35338-41 compliance guarantees consistent quality and reliability
• Standard split lock design offers easy installation and reliable locking action
• 0.031" thickness provides optimal balance between locking force and space requirements

Professional Applications & Engineering Value

This cadmium-plated steel split lock washer delivers critical vibration resistance in demanding mechanical assemblies where fastener security is paramount. The standard split lock washer design creates continuous spring tension against both the bearing surface and fastener head, effectively preventing rotational loosening under dynamic loads. Engineered with Rockwell C38 hardness, these industrial washers maintain their spring properties through repeated compression cycles, making them ideal for machinery, automotive, and heavy equipment applications. The 0.141" ID provides precise compatibility with No. 6 screws, while the cadmium plating offers superior corrosion resistance in challenging environments. This combination of precise dimensions, material strength, and protective finish ensures reliable performance in vibration-prone assemblies where fastener failure is not an option.

Specification Summary & Compliance

This heavy-duty split lock washer features precision inch dimensions with 0.141" internal diameter, 0.25" outer diameter, and 0.031" thickness, specifically designed for No. 6 screw applications. Manufactured to exacting standards including ASME B18.21.1 and MS35338-41 specifications, ensuring consistent performance and dimensional accuracy. The cadmium-plated steel construction meets industry requirements for corrosion resistance and durability, while the Rockwell C38 hardness rating guarantees optimal spring tension and long-term reliability in mechanical fastening systems.