S-91475A348 1.003" ID x 1.656" OD ASME B18.21.1; MS35338-53 Mil. Spec. Split Lock Washers

Key Features & Benefits at a Glance

• Superior vibration resistance to prevent fastener loosening in high-stress industrial environments, ensuring long-term assembly integrity.
• Durable corrosion protection from the zinc yellow-chromate plating, extending service life in harsh or outdoor conditions.
• High hardness rating of Rockwell C38 for reliable spring action and consistent locking force without deformation.
• Precise dimensional fit with 1.003" ID and 1.656" OD, designed to securely accommodate 1" screws and reduce installation errors.
• Compliance with ASME B18.21.1 and MS35338-53 standards, guaranteeing consistent quality and interchangeability in mechanical systems.
• Robust 0.25" thickness provides enhanced load distribution and resistance to compression under heavy-duty applications.
• Standard split lock design for easy installation and effective locking in inch-based fastener systems.

Professional Applications & Engineering Value

This 1" split lock washer is engineered to address common challenges in industrial assemblies, such as vibration-induced loosening and corrosion. Made from zinc yellow-chromate plated steel, it offers excellent resistance to environmental factors, making it ideal for machinery, automotive, and construction applications. The standard split lock washer type ensures a tight grip by applying continuous spring tension, which compensates for thermal expansion and dynamic loads. By meeting ASME B18.21.1 and MS35338-53 specifications, it provides reliable performance in critical systems, reducing maintenance needs and enhancing operational safety. Its Rockwell C38 hardness and precise dimensions (1.003" ID, 1.656" OD) ensure compatibility and durability, supporting efficient B2B procurement for repetitive industrial use.

Specification Summary & Compliance

This washer features an internal diameter of 1.003", outer diameter of 1.656", and thickness of 0.25", designed for use with 1" screws in inch measurement systems. It conforms to ASME B18.21.1 and MS35338-53 standards, ensuring dimensional accuracy and performance consistency. The zinc yellow-chromate plated steel construction provides corrosion resistance, while the Rockwell C38 hardness guarantees mechanical reliability. Compliant with industry norms for split lock washers, it supports quality assurance in manufacturing and assembly processes.