NUT LOCK (P/N cf81-311) - New Surplus
P/N: cf81-311
Category: Nuts
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 | 1 Available |
Product Description
The cf81-311 is a prevailing-torque lock nut designed to maintain fastener security under aircraft vibration. This nut features a nylon or all-metal insert that creates friction against the bolt thread, preventing loosening during flight operations. Constructed from steel or aluminum per AN365 or NASM21044 standards, it secures airframe brackets, structural attachments, and critical assemblies.
Installation requires matching the nut material and temperature rating to the application, then torquing per aircraft maintenance manual specifications and FAA AC 43.13-1B guidance.
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 NUT LOCK (P/N cf81-311)?
The cf81-311 is a prevailing-torque lock nut designed to maintain fastener security under aircraft vibration. This nut features a nylon or all-metal insert that creates friction against the bolt thread, preventing loosening during flight operations.
What conditions is the cf81-311 available in?
The cf81-311 is currently available in the following conditions: New Surplus. Each condition reflects the part's maintenance history and certification status per FAA standards.
How do I get pricing for the cf81-311?
The cf81-311 requires a custom quote. Submit a Request for Quote (RFQ) through our website or call our sales team at (904) 998-9101 for immediate pricing assistance.
Do you offer expedited shipping for the cf81-311?
Yes, we offer same-day processing on in-stock items and provide 24/7 AOG (Aircraft on Ground) support for urgent needs. Standard, expedited, and overnight shipping options are available.
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