BOLT,CLOSE TOLERANCE (P/N an174-21) - New Surplus, New
P/N: an174-21
Category: Bolts
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 | 79 Available |
| New | 2 Available |
Product Description
The AN174-21 is a 1/4-28 UNF close-tolerance hex head bolt manufactured from alloy steel to Army-Navy specifications. This fastener provides precise shank fit for structural joints requiring minimal clearance, particularly in landing gear attach fittings subject to vibration and dynamic loading. The close tolerance ensures interference fit installation, reducing play in critical connections.
Installation requires torquing per FAA AC 43.13-1B and applicable aircraft maintenance manual specifications to achieve proper clamp load and prevent loosening during operation.
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 BOLT,CLOSE TOLERANCE (P/N an174-21)?
The AN174-21 is a 1/4-28 UNF close-tolerance hex head bolt manufactured from alloy steel to Army-Navy specifications. This fastener provides precise shank fit for structural joints requiring minimal clearance, particularly in landing gear attach fittings subject to vibration and dynamic loading.
What conditions is the an174-21 available in?
The an174-21 is currently available in the following conditions: New Surplus, New. Each condition reflects the part's maintenance history and certification status per FAA standards.
How do I get pricing for the an174-21?
The an174-21 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 an174-21?
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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