S-91475A235 0.088" ID x 0.172" OD ASME B18.21.1; MS35338-39 Mil. Spec. Split Lock Washers

Key Features & Benefits at a Glance

• Superior vibration resistance due to the split lock design that maintains consistent spring tension under dynamic loads
• Enhanced corrosion protection with zinc yellow-chromate plating, extending service life in harsh industrial environments
• Reliable hardness performance at Rockwell C38, ensuring the washer retains its shape and locking force without deformation
• Precise dimensional fit with 0.088" ID and 0.172" OD, providing secure fastening for No. 2 screws without slippage
• Compliance with major industry standards including ASME B18.21.1 and MS35338-39, guaranteeing interchangeability and quality assurance
• Optimized for inch-system applications, facilitating easy integration into existing assembly lines and maintenance protocols
• Durable steel construction combined with surface treatment, offering long-term reliability in high-stress mechanical joints

Professional Applications & Engineering Value

This split lock washer is engineered to address critical challenges in industrial fastening, such as vibration-induced loosening and corrosion in demanding environments. Made from zinc yellow-chromate plated steel, it provides a robust barrier against moisture and chemicals, reducing maintenance frequency and downtime. The split design generates continuous spring action, which compensates for thermal expansion and load variations, ensuring secure locking for No. 2 screw applications in machinery, automotive assemblies, and electrical enclosures. By meeting ASME B18.21.1 and MS35338-39 specifications, it delivers consistent performance and compatibility, making it an ideal choice for engineers seeking reliability in inch-system based projects.

Specification Summary & Compliance

This washer features precise dimensions: 0.088" ID, 0.172" OD, and 0.020" thickness, designed for use with No. 2 screw sizes. It conforms to ASME B18.21.1 and MS35338-39 standards, ensuring dimensional accuracy and functional reliability. The Rockwell C38 hardness provides consistent mechanical properties, while the zinc yellow-chromate plating offers corrosion resistance, supporting compliance with common industry requirements for safety and durability.