S-91475A544 0.377" ID x 0.68" OD ASME B18.21.1; MS35338-46 Mil. Spec. Split Lock Washers

Key Features & Benefits at a Glance

• Superior vibration resistance with split lock design that maintains consistent locking force under dynamic loads
• Enhanced corrosion protection through cadmium-plated steel construction for extended service life in harsh environments
• Optimized for 3/8" fasteners with precise 0.377" inner diameter ensuring perfect fit and maximum contact surface
• Exceptional durability with Rockwell C38 hardness rating that prevents deformation under high torque applications
• Industry-standard compliance meeting ASME B18.21.1 and MS35338-46 specifications for guaranteed performance
• Reliable spring action from 0.094" thickness providing consistent tension and preventing fastener loosening
• Wide bearing surface with 0.68" outer diameter distributing load evenly and protecting assembled components

Professional Applications & Engineering Value

This cadmium-plated steel split lock washer delivers critical vibration resistance in demanding industrial applications where fastener security is paramount. The split lock design creates continuous spring tension that compensates for thermal expansion, material relaxation, and vibration-induced loosening - common failure points in machinery, automotive, and heavy equipment assemblies. Engineered with Rockwell C38 hardness, the washer maintains its structural integrity under repeated loading cycles, while the cadmium plating provides essential corrosion protection in environments exposed to moisture, chemicals, and temperature variations. The precise 0.377" inner diameter ensures optimal engagement with 3/8" screws, making it ideal for critical joints in construction equipment, manufacturing machinery, and transportation systems where reliability cannot be compromised.

Specification Summary & Compliance

This split lock washer features inch system dimensions with 0.377" ID, 0.68" OD, and 0.094" thickness, manufactured to ASME B18.21.1 and MS35338-46 specifications. The standard split lock design provides consistent spring tension and locking performance, while the cadmium-plated steel construction meets industrial requirements for corrosion resistance. The washer maintains Rockwell C38 hardness throughout its service life, ensuring dimensional stability and reliable performance in vibration-prone applications.