LOCK NUT (P/N 21FK624) - New Surplus
P/N: 21FK624
Category: Fasteners & Hardware
This product requires a custom quote. Please contact our sales team for pricing information or submit an RFQ (Request for Quote).
Available Inventory
| Condition | Stock |
|---|---|
| New Surplus | 5 Available |
Product Description
The 21FK624 is a self-locking prevailing-torque nut designed to resist vibration-induced loosening in aircraft structural assemblies. This lock nut conforms to AN/MS/NAS standards and maintains clamping force under dynamic conditions without requiring secondary safety devices. Installed in airframe joints, engine mounts, and control surface attachments where vibration exposure is significant.
Installation requires torque application to specified prevailing-torque values per the applicable aircraft maintenance manual and IPC compatibility verification.
Please note: Product descriptions are provided for informational purposes. Always refer to your aircraft's Illustrated Parts Catalog (IPC) to verify part compatibility and specifications.
Frequently Asked Questions
What is the LOCK NUT (P/N 21FK624)?
The 21FK624 is a self-locking prevailing-torque nut designed to resist vibration-induced loosening in aircraft structural assemblies. This lock nut conforms to AN/MS/NAS standards and maintains clamping force under dynamic conditions without requiring secondary safety devices.
Does the 21FK624 meet AN/MS/NAS aviation specifications?
Aircraft hardware is manufactured to military and aviation specifications. The LOCK NUT conforms to its applicable AN (Air Force-Navy), MS (Military Standard), or NAS (National Aerospace Standard) specification. Contact us for specific specification details.
What material is the 21FK624 manufactured from?
Aviation hardware is available in various materials including cadmium-plated steel, stainless steel, aluminum alloy, and titanium depending on the application. Contact us for material certification and specifications for the 21FK624.
Can I order the 21FK624 in custom quantities?
Yes, we sell hardware in various quantities from single units to bulk lots. The LOCK NUT is available in: New Surplus. Submit an RFQ for volume pricing or call (904) 998-9101 for quantity availability.
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