S-91475A025 0.167" ID x 0.293" OD ASME B18.21.1; MS35338-137 Mil. Spec. Split Lock Washers

Key Features & Benefits at a Glance

• Superior vibration resistance ensures secure, long-lasting fastening in high-stress environments, preventing loosening under dynamic loads.
• Excellent corrosion resistance from Passivated 316 Stainless Steel construction, ideal for harsh or outdoor industrial settings.
• Reliable hardness (Rockwell C35) provides consistent spring action and durability, maintaining locking force over repeated use.
• Precise dimensional fit with 0.167" ID and 0.293" OD, designed specifically for No. 8 screws to ensure proper installation and function.
• Compliance with ASME B18.21.1 and MS35338-137 guarantees adherence to recognized industry standards for quality and safety.
• RoHS 3 and REACH compliance meets strict environmental regulations, making it suitable for global supply chains and sensitive applications.
• Standard split lock design offers easy installation and effective locking without requiring special tools.

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. Constructed from Passivated 316 Stainless Steel, it provides exceptional resistance to chemicals, moisture, and temperature variations, making it ideal for machinery, automotive assemblies, and marine equipment. The standard split lock washer type with precise dimensions (0.167" ID, 0.293" OD) ensures a snug fit for No. 8 screw size applications, enhancing assembly integrity. By meeting ASME B18.21.1 and MS35338-137 specifications, it delivers reliable performance in sectors like aerospace, manufacturing, and construction, where failure prevention is paramount. Its design minimizes maintenance needs and extends service life, reducing downtime and costs.

Specification Summary & Compliance

This washer features an ID of 0.167", OD of 0.293", and thickness of 0.040", with dimensional accuracy per inch system standards. It complies with ASME B18.21.1 for split lock washers and MS35338-137 for specific industrial requirements. The product is fully RoHS 3 (2015/863/EU) Compliant and REACH (EC 1907/2006) Compliant, ensuring adherence to environmental and safety regulations without hazardous substances.