S-91333A170 3/8"-16 Locknuts

Key Features & Benefits at a Glance

• Superior vibration resistance through nylon insert locking mechanism that maintains secure fastening under dynamic loads
• Enhanced corrosion protection with black corrosion-resistant coating for extended service life in harsh environments
• Reliable high-temperature performance with nylon insert rated up to 220°F (104°C) for demanding applications
• Precise thread engagement with UNC coarse threads and Class 2B fit ensuring consistent installation and removal
• Industry-standard compatibility with 3/8"-16 thread size and external hex drive for universal tool compatibility
• Environmental compliance assurance meeting RoHS 3 and REACH standards for responsible manufacturing
• Optimized dimensional stability with 9/16" width and 29/64" height providing consistent performance across applications

Professional Applications & Engineering Value

This 3/8"-16 nylon insert locknut delivers exceptional engineering value in applications where vibration-induced loosening poses significant reliability concerns. The black corrosion-resistant coated steel construction provides durable protection against environmental degradation, while the nylon insert locking mechanism creates consistent friction that resists rotational forces without damaging mating threads. The UNC coarse thread profile with Class 2B fit ensures smooth installation and reliable performance in industrial machinery, automotive assemblies, and construction equipment. With a maximum temperature rating of 220°F, this locknut maintains its locking integrity in elevated temperature environments, making it ideal for engine compartments, industrial motors, and mechanical systems subject to thermal cycling and dynamic stresses.

Specification Summary & Compliance

This locknut features precision UNC 3/8"-16 coarse threads with Class 2B thread fit for consistent engagement and reliable performance. The external hex drive design provides standard tool compatibility, while the dimensional specifications include 9/16" width and 29/64" height for proper clearance and torque application. The product is manufactured in compliance with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental standards, ensuring responsible material sourcing and production processes for industrial applications requiring regulatory compliance.