Description
The N Female to SMA Female 4-Hole Flange Adapter is a specialized “between-series” RF component designed for flush-mounting onto chassis, cabinets, or bulkhead plates. It features an N-Type Jack (Female) on one side and an SMA Jack (Female) on the other, both precision-mounted into a robust, square metal flange. The flange includes four pre-drilled mounting holes located at each corner, allowing the adapter to be bolted or screwed directly to a flat surface.
This adapter is indispensable for engineers who require maximum mechanical stability for their RF interfaces. Unlike threaded bulkhead adapters, the 4-hole flange design prevents the connector from rotating or loosening under the high torque typical of heavy N-Type cable assemblies. It is widely used to provide an external N-Type interface for internal SMA-terminated microwave modules, amplifiers, and filters. Constructed with a nickel-plated brass body and PTFE (Teflon) insulation, it maintains exceptional signal integrity and low VSWR up to 6 GHz.
Key Technical Advantages
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Maximum Rotational Stability: The 4-hole square flange design ensures the connector cannot spin or shift, even when subjected to extreme cable torque or high-vibration environments.
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Flush-Mount Integration: Provides a clean, professional interface that sits flush against the equipment panel, ideal for rack-mounted systems and industrial enclosures.
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Superior RF Shielding: The broad contact area of the flange against the chassis provides an exceptional ground path, significantly reducing EMI and signal leakage.
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High-Power Durability: The rugged brass construction is designed to handle the mechanical load of large-diameter outdoor coaxial cables without stressing internal circuitry.
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Precision Conductivity: High-purity gold or silver plating on the internal center contact sockets ensures ultra-low contact resistance and protection against oxidation.
Key Features
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N Female to SMA Female Interface: Consists of an N-Type Jack (with socket) and an SMA Jack (with socket) in a single flanged housing.
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Square 4-Hole Flange: Features four mounting holes for secure attachment using standard machine screws or bolts.
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Nickel-Plated Brass Construction: Offers superior corrosion resistance and professional-grade durability for industrial and laboratory use.
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Premium PTFE Dielectric: Offers high thermal stability and maintains consistent electrical performance across its frequency range.
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Standard 50 Ohm Impedance: Specifically engineered to match standard high-performance wireless communication and microwave test instrumentation.
🔹 Product Applications
- RF signal interface between N female and SMA female 4-hole flange connectors
- Panel-mounted RF connections in telecom and communication systems
- Secure antenna and RF cable integration in base stations and enclosures
- RF coaxial cable assemblies with flange mounting for stability
- RF test and measurement equipment setups
- Signal routing through panels and chassis in communication devices
- Industrial RF and control panel installations
- Outdoor RF enclosures and cabinet connectivity
- Wireless communication and networking systems
- High-frequency RF applications requiring secure mounting


Samay (verified owner) –
Easy ordering process and proper communication throughout.
Anshu Yadav (verified owner) –
Really happy with the support team. I had a few technical doubts before ordering and they explained everything patiently.