S-91475A242 0.114" ID x 0.209" OD ASME B18.21.1; MS35338-40 Mil. Spec. Split Lock Washers
Mil. Spec. Split Lock Washers
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Basic Information
Dimension Parameters
Material & Strength Parameters
Installation & Application Parameters
Special Type Parameters
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Key Features & Benefits at a Glance
- Superior vibration resistance due to the split lock design, preventing fastener loosening in dynamic environments.
- Enhanced corrosion protection from the zinc yellow-chromate plating, extending service life in harsh conditions.
- Reliable and consistent locking force ensured by the high Rockwell C38 hardness for durable performance.
- Precise fit for No. 4 screws with 0.114" ID and 0.209" OD, providing secure fastening in assemblies.
- Compliance with industry standards including ASME B18.21.1 and MS35338-40, guaranteeing quality and interchangeability.
- Durable steel construction offers excellent strength and fatigue resistance for long-term reliability.
- Easy installation and removal with standard split lock washer type, saving time in maintenance and assembly.
Professional Applications & Engineering Value
This No. 4 split lock washer is engineered to address critical challenges in industrial settings, such as vibration-induced loosening and corrosion. Made from zinc yellow-chromate plated steel, it provides a robust barrier against moisture and chemicals, reducing maintenance needs in automotive, machinery, and electrical enclosures. The split lock design applies constant spring tension, maintaining clamp load under dynamic stresses, while the precise inch dimensions ensure compatibility with standard No. 4 screw sizes. Ideal for vibration-resistant applications, this washer enhances assembly integrity, minimizes downtime, and supports compliance with rigorous specifications like ASME B18.21.1, making it a trusted choice for engineers seeking durability and performance in mechanical fasteners.
Specification Summary & Compliance
This washer features an ID of 0.114", OD of 0.209", and thickness of 0.025", designed for precise fit in inch-based systems. It conforms to ASME B18.21.1 and MS35338-40 specifications, ensuring dimensional accuracy and performance reliability. The Rockwell C38 hardness provides consistent mechanical properties, and the zinc yellow-chromate plating meets common industry requirements for corrosion resistance, supporting use in regulated environments without additional compliance concerns.
