S-91475A511 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, ensuring fasteners stay securely in place under dynamic loads
• Enhanced corrosion protection from cadmium plating, extending service life in harsh industrial environments
• Consistent hardness (Rockwell C38) provides reliable spring action and prevents permanent deformation under stress
• Precise fit for No. 2 screws with 0.088" ID and 0.172" OD, offering easy installation and optimal load distribution
• Compliance with ASME B18.21.1 and MS35338-39 standards guarantees dimensional accuracy and interchangeability
• Durable steel construction ensures high tensile strength and long-term performance in mechanical assemblies
• Standard split lock washer type delivers proven locking performance for a wide range of industrial applications

Professional Applications & Engineering Value

This cadmium-plated steel split lock washer is engineered to address critical challenges in mechanical assemblies where vibration and dynamic loads can cause fastener loosening. The split lock design creates a continuous spring force that maintains tension on the fastener, effectively resisting loosening in equipment such as motors, pumps, and machinery. Made from high-strength steel with a Rockwell C38 hardness, it offers reliable spring-back action without losing its shape, even under repeated stress cycles. The cadmium plating provides excellent corrosion resistance, making it suitable for outdoor or humid environments. Ideal for use with No. 2 screw sizes in inch-based systems, this washer ensures secure fastening in automotive, aerospace, and industrial machinery applications, reducing maintenance needs and enhancing operational safety.

Specification Summary & Compliance

This split lock washer features precise dimensions: 0.088" ID, 0.172" OD, and 0.020" thickness, manufactured to ASME B18.21.1 and MS35338-39 specifications for consistent quality and interchangeability. It meets standard inch measurement system requirements and is compliant with industry regulations, including RoHS and REACH for environmental safety. The Rockwell C38 hardness ensures durability and performance in demanding applications.