S-94407A105 5/16"-18 Locknuts

Key Features & Benefits at a Glance

• Superior vibration resistance through nylon insert locking technology, preventing loosening in high-motion applications
• Enhanced corrosion protection with black-oxide coated 18-8 stainless steel construction for extended service life
• Reliable high-temperature performance maintaining locking integrity up to 220°F (104°C)
• Precise thread engagement with Class 2B UNC coarse threads ensuring consistent installation and removal
• Industry-standard compatibility with 1/2" external hex drive for standard tooling and efficient installation
• Environmental compliance assurance meeting RoHS 3 and REACH standards for global industrial use
• Optimized dimensional stability with 11/32" height profile providing secure fastening without excessive bulk

Professional Applications & Engineering Value

This 5/16"-18 nylon insert lock nut delivers critical vibration-resistant performance for demanding industrial environments where secure fastening is paramount. The black-oxide 18-8 stainless steel construction provides excellent corrosion resistance while the nylon insert locking mechanism creates consistent friction that prevents back-off under continuous vibration and thermal cycling. Engineered with UNC coarse threads and Class 2B thread fit, this lock nut ensures reliable engagement across multiple installation cycles without galling or cross-threading. Ideal for machinery, automotive assemblies, and electrical enclosures subject to dynamic loads, this component solves the fundamental challenge of maintaining clamp force in vibration-prone applications while offering the chemical resistance needed for harsh operating conditions.

Specification Summary & Compliance

This lock nut features 5/16"-18 UNC coarse threads with Class 2B thread fit for standard industrial applications. The component meets RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) compliance standards, ensuring environmental responsibility. Manufacturing follows industry standards for external hex drive locknuts with precise dimensional control (1/2" width, 11/32" height) and material specifications for 18-8 stainless steel with black-oxide surface treatment.