S-92961A116 0.385" ID x 0.55" OD ASME B18.21.1 Split Lock Washers for Socket Head Screws

Key Features & Benefits at a Glance

• Superior vibration resistance - The split lock design provides continuous spring tension to prevent loosening under dynamic loads
• Enhanced corrosion protection - Zinc-plated steel construction offers reliable defense against rust and environmental degradation
• Optimal hardness for durability - Rockwell C38 hardness ensures long-lasting performance without cracking or deformation
• Precision dimensional fit - 0.385" ID specifically engineered for secure 3/8" screw applications with 0.55" OD for proper bearing surface
• Industry-standard compliance - Manufactured to ASME B18.21.1 specifications for guaranteed performance and interchangeability
• Environmental responsibility - RoHS 3 and REACH compliant for safe use in regulated industries and global markets
• Heavy-duty construction - 0.125" thickness provides substantial material strength for demanding industrial applications

Professional Applications & Engineering Value

This split lock washer delivers critical vibration-resistant performance in demanding industrial environments where fastener security is paramount. The zinc-plated steel construction combined with Rockwell C38 hardness creates an optimal balance between corrosion resistance and mechanical strength, preventing both environmental degradation and material failure under stress. The precise 0.385" internal diameter ensures perfect compatibility with 3/8" screws while the split design generates continuous spring tension that counters loosening in machinery, automotive assemblies, and structural applications. Engineered to ASME B18.21.1 standards, this washer provides reliable performance in high-vibration scenarios where standard flat washers would fail, making it ideal for manufacturing equipment, transportation systems, and heavy machinery where maintenance downtime must be minimized.

Specification Summary & Compliance

This split lock washer features precise dimensional specifications including 0.385" ID, 0.55" OD, and 0.125" thickness, engineered specifically for 3/8" screw applications. Manufactured in compliance with ASME B18.21.1 standards for dimensional accuracy and performance requirements. The product meets RoHS 3 (2015/863/EU) compliance for restricted substance control and REACH (EC 1907/2006) regulations for chemical safety, ensuring environmental responsibility and global market acceptance. The standard split lock washer type with Rockwell C38 hardness provides consistent mechanical properties across production batches.