SCREW (P/N nas517-4-5) - New Surplus
P/N: nas517-4-5
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 | 804 Available |
Product Description
The NAS517-4-5 is a 1/4-28 UNF Class 3A close-tolerance flat head machine screw with a 100° countersunk head. Manufactured from alloy steel, this National Aerospace Standard fastener provides flush fastening in aircraft skin panels and structural assemblies. The cross-recess drive accepts standard Phillips drivers for installation into 100° countersink holes.
Commonly used throughout airframe construction where flush surfaces are required for aerodynamic integrity. Installation follows aircraft maintenance manual specifications and engineering drawing torque requirements.
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 SCREW (P/N nas517-4-5)?
The NAS517-4-5 is a 1/4-28 UNF Class 3A close-tolerance flat head machine screw with a 100° countersunk head. Manufactured from alloy steel, this National Aerospace Standard fastener provides flush fastening in aircraft skin panels and structural assemblies.
Does the nas517-4-5 meet AN/MS/NAS aviation specifications?
Aircraft hardware is manufactured to military and aviation specifications. The SCREW 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 nas517-4-5 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 nas517-4-5.
Can I order the nas517-4-5 in custom quantities?
Yes, we sell hardware in various quantities from single units to bulk lots. The SCREW is available in: New Surplus. Submit an RFQ for volume pricing or call (904) 998-9101 for quantity availability.
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