NUT, HEXAGONAL, CASTELLATED (P/N b0203011-4) - New Surplus
P/N: b0203011-4
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 b0203011-4 is a hexagonal castellated nut designed to accept a cotter pin for positive mechanical locking on aircraft hardware. Constructed from steel and conforming to Aeronautical Standard AN310/AN320 specifications, this nut threads onto drilled-shank bolts in aviation assemblies where vibration-resistant fastening is critical. The castellated design features radial slots that align with the bolt's drilled hole, allowing a cotter pin to pass through and lock the nut permanently in position.
Installation requires proper torque sequencing and cotter pin placement per AC 43.13-1B or the applicable aircraft maintenance manual to ensure airworthiness.
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, HEXAGONAL, CASTELLATED (P/N b0203011-4)?
The b0203011-4 is a hexagonal castellated nut designed to accept a cotter pin for positive mechanical locking on aircraft hardware. Constructed from steel and conforming to Aeronautical Standard AN310/AN320 specifications, this nut threads onto drilled-shank bolts in aviation assemblies where vibration-resistant fastening is critical.
Does the b0203011-4 meet AN/MS/NAS aviation specifications?
Aircraft hardware is manufactured to military and aviation specifications. The NUT, HEXAGONAL, CASTELLATED 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 b0203011-4 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 b0203011-4.
Can I order the b0203011-4 in custom quantities?
Yes, we sell hardware in various quantities from single units to bulk lots. The NUT, HEXAGONAL, CASTELLATED is available in: New Surplus. Submit an RFQ for volume pricing or call (904) 998-9101 for quantity availability.