NUT, HEX(S/L), 1/2-20THIN 250D (P/N an364-820a) - New Surplus
P/N: an364-820a
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 | 8 Available |
Product Description
The AN364-820A is a 1/2-20 UNF thin hex nut with a nonmetallic self-locking insert, manufactured from steel to Military Standard MS21083N8 specifications. This nut provides prevailing torque retention in shear-loaded airframe joints, preventing fastener loosening under vibration and flight loads. The nylon insert creates a locking action without requiring deformed threads, maintaining consistent torque values across multiple installation cycles.
Rated to 250°F, it installs on compatible 1/2-20 bolts and should be torqued per aircraft maintenance manual requirements. Commonly used in structural assemblies where reliable fastener security is critical.
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, HEX(S/L), 1/2-20THIN 250D (P/N an364-820a)?
The AN364-820A is a 1/2-20 UNF thin hex nut with a nonmetallic self-locking insert, manufactured from steel to Military Standard MS21083N8 specifications. This nut provides prevailing torque retention in shear-loaded airframe joints, preventing fastener loosening under vibration and flight loads.
Does the an364-820a meet AN/MS/NAS aviation specifications?
Aircraft hardware is manufactured to military and aviation specifications. The NUT, HEX(S/L), 1/2-20THIN 250D 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 an364-820a 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 an364-820a.
Can I order the an364-820a in custom quantities?
Yes, we sell hardware in various quantities from single units to bulk lots. The NUT, HEX(S/L), 1/2-20THIN 250D is available in: New Surplus. Submit an RFQ for volume pricing or call (904) 998-9101 for quantity availability.