NUT,PLAIN,CASTELLATED,HEX (P/N an320-1) - New Surplus
P/N: an320-1
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 | 16 Available |
Product Description
The AN320-1 is a plain steel castellated hex nut with 6-40 UNF threads designed for cotter-pinned aircraft bolt joints in shear-only service. The castellated design features notches around the hex head to accommodate a cotter pin, preventing accidental loosening during vibration and flight operations. Used on control-system clevis bolts and drilled-shank bolts where shear loads predominate.
Installation requires tightening to snug condition followed by cotter pin insertion through the bolt shank and nut castellations. Meets AN standard specifications for aerospace fastener applications.
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,PLAIN,CASTELLATED,HEX (P/N an320-1)?
The AN320-1 is a plain steel castellated hex nut with 6-40 UNF threads designed for cotter-pinned aircraft bolt joints in shear-only service. The castellated design features notches around the hex head to accommodate a cotter pin, preventing accidental loosening during vibration and flight operations.
Does the an320-1 meet AN/MS/NAS aviation specifications?
Aircraft hardware is manufactured to military and aviation specifications. The NUT,PLAIN,CASTELLATED,HEX 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 an320-1 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 an320-1.
Can I order the an320-1 in custom quantities?
Yes, we sell hardware in various quantities from single units to bulk lots. The NUT,PLAIN,CASTELLATED,HEX is available in: New Surplus. Submit an RFQ for volume pricing or call (904) 998-9101 for quantity availability.