MS17830-5C Self-Locking Hex Nut is a military standard aircraft fastening component designed to provide secure threaded retention in aerospace structures and mechanical assemblies. This self-locking nut incorporates a non-metallic locking insert that helps prevent loosening caused by vibration, shock, and cyclic loading while maintaining reliable fastening performance.

Manufactured in accordance with the MS17830 specification, this nut features a 5/16-18 thread size and a hexagonal configuration for standard wrench installation. The self-locking design provides prevailing torque without the need for additional locking devices, making it suitable for aircraft applications where dependable fastener security and ease of maintenance are required.

The MS17830-5C nut is commonly used throughout aircraft structures, equipment installations, access panels, brackets, and general airframe assemblies. Its corrosion-resistant construction and controlled locking characteristics provide reliable service in aerospace environments where resistance to vibration and fastener migration is essential.

During maintenance inspections, the nut should be checked for thread condition, corrosion, damage, and proper locking capability. Replacement is recommended if the locking insert is worn, damaged, or no longer provides adequate prevailing torque.

Key Features

- Part Number: MS17830-5C
- Manufacturer: Military Standard (MS) / Approved Aviation Hardware Manufacturer
- Component: Self-Locking Hex Nut
- Thread Size: 5/16-18 UNJC
- Locking Feature: Non-metallic insert self-locking design
- Material: Corrosion-resistant steel construction
- Finish: Passivated corrosion-resistant finish
- Temperature Rating: Suitable for applications up to 250°F
- Provides vibration-resistant fastening for aircraft structural and equipment assemblies