Dorman 814-047 Hex Lock Nut with Nylon Insert Grade Thread - 2 3/4-16

The Dorman 814-047 is a Grade 2 hex lock nut featuring a nylon insert for reliable, vibration-resistant fastening. With a 3/4-16 thread size (3/4-inch diameter, 16 threads per inch — UNF fine thread), this nut is designed to maintain clamping force in applications subject to movement, vibration, and dynamic loads.

The integrated nylon insert creates friction against the bolt threads, preventing the nut from loosening over time without the need for additional locking hardware such as lock washers or thread-locking compounds. Grade 2 construction meets standard SAE specifications for general-purpose fastening applications.

Key Features:

• Thread Size: 3/4-16 UNF (fine thread)
• Grade: Grade 2 — general-purpose SAE specification
• Type: Hex lock nut with nylon insert (prevailing torque nut)
• Locking Mechanism: Nylon insert provides friction lock to resist loosening from vibration
• Drive Style: Hex (six-sided) for use with standard wrenches and sockets
• Finish: Zinc-plated for corrosion resistance
• Single-use recommended: Nylon insert lock nuts are designed for one-time installation for optimal locking performance

The Dorman 814-047 is a dependable replacement or service fastener suitable for automotive, light truck, and general mechanical repair applications. It is sourced as part of Dorman's extensive hardware assortment, ensuring a consistent, quality fit for maintenance and restoration projects.