BOLT,MACHINE (P/N an4-4) - New Surplus
P/N: an4-4
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 | 122 Available |
Product Description
The AN4-4 is a 1/4-28 UNF hex head machine bolt conforming to AN4/NASM4 specifications. Manufactured from alloy steel, this bolt features a drilled shank for cotter-pin locking to prevent fastener rotation. The dash number indicates grip length; select the appropriate length to match your joint stack-up.
Commonly used in airframe bracket assemblies and structural connections. Install with a castellated nut and cotter pin, then torque per FAA AC 43.13-1B guidance. Verify proper grip length and thread engagement before final installation.
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,MACHINE (P/N an4-4)?
The AN4-4 is a 1/4-28 UNF hex head machine bolt conforming to AN4/NASM4 specifications. Manufactured from alloy steel, this bolt features a drilled shank for cotter-pin locking to prevent fastener rotation.
Does the an4-4 meet AN/MS/NAS aviation specifications?
Aircraft hardware is manufactured to military and aviation specifications. The BOLT,MACHINE 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 an4-4 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 an4-4.
Can I order the an4-4 in custom quantities?
Yes, we sell hardware in various quantities from single units to bulk lots. The BOLT,MACHINE is available in: New Surplus. Submit an RFQ for volume pricing or call (904) 998-9101 for quantity availability.