S-91853A510 10-32 Locknuts

Key Features & Benefits at a Glance

• Superior vibration resistance through cotter pin locking mechanism, preventing loosening in high-stress applications
• Excellent corrosion resistance with 18-8 stainless steel construction, ideal for harsh industrial environments
• Precise thread engagement with Class 2B thread fit ensuring reliable, consistent fastening performance
• Optimized for 3/64" cotter pins with specifically designed slot dimensions for secure locking installation
• Enhanced durability through UNF fine thread design, providing superior load distribution and fatigue resistance
• Easy installation and removal with standard 3/8" external hex drive compatible with common wrench tools
• Regulatory compliance assurance meeting both REACH and RoHS 3 environmental standards

Professional Applications & Engineering Value

This 10-32 UNF stainless steel locknut delivers critical security in demanding applications where vibration-induced loosening poses significant risks. The 18-8 stainless steel material provides exceptional corrosion resistance, making it ideal for marine, automotive, and industrial equipment exposed to moisture and chemicals. The cotter pin locking mechanism offers a mechanical safety lock that surpasses typical nylon inserts, ensuring permanent fastening in critical assemblies. With its UNF fine thread configuration and Class 2B thread fit, this external hex locknut maintains precise torque values and distributes loads evenly across threads, preventing stress concentration and thread damage. The standardized 3/8" hex profile allows for straightforward installation using common tools while the specifically engineered slot accommodates standard 3/64" cotter pins for reliable, tamper-proof security in machinery, structural frameworks, and transportation equipment.

Specification Summary & Compliance

This precision locknut features 10-32 UNF fine threads with Class 2B thread fit tolerances, ensuring consistent engagement and reliable performance. The external hex drive measures 3/8" across flats with a total height of 1/4", designed for standard wrench compatibility. The cotter pin slot is engineered with 0.09" minimum depth and 0.06" minimum width to accommodate 3/64" diameter cotter pins. Manufacturing complies with REACH (EC 1907/2006) and RoHS 3 (2015/863/EU) standards, guaranteeing environmental regulatory compliance for industrial applications worldwide.