Product Description
UHF (SO-239) - Coaxial Dust Cover Protective Cap
Protect your valuable radio equipment with the G510 Weather Cap, a durable, nickel-plated brass dust cap designed to protect exposed UHF female jack (SO-239) antenna mounts from moisture, dirt, dust, and grime. The cap has UHF male (PL-259) threads that screws onto a standard UHF female jack (SO-239) antenna base, helping keep the connector clean and protected when an antenna is temporarily removed.
Ideal for mobile radio installations, amateur radio stations, emergency communications, and portable field equipment, the G510 is especially useful when preparing radio equipment for transport, storage, or deployment. It is also a practical accessory for vehicle-mounted antennas when the antenna is removed before a car wash.
A built-in red silicone gasket provides a protective sealing interface inside the cap. The rugged brass body with nickel plating offers durability and corrosion resistance for dependable service in demanding environments.
Key Features
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Protective Design: Helps keep moisture, dirt, dust, and grime away from exposed UHF female antenna mounts.
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Durable Construction: Brass body with nickel-plated finish.
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Red Silicone Gasket: Internal gasket helps provide a protective seal.
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Standard UHF Threading: 5/8"-24 UNEF thread for compatible UHF (SO-239) female antenna bases.
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Versatile Applications: Suitable for mobile radio installations, amateur radio equipment, emergency communications, and portable radio go-kits or go-boxes.
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Convenient Protection: Ideal when temporarily removing an antenna for vehicle washing, transport, or storage.
Technical Specifications
| Product Type | Dust Cap |
| Part Number | ARS-G510-N (M) |
| Compatible Connector | UHF Female Jack (SO-239) |
| Thread | 5/8"-24 UNEF |
| Body Material | Brass |
| Body Plating | Nickel |
| Gasket Material | Silicone |
| Gasket Color | Red |
| Length | 0.44 in (11.24 mm) |
| Width | 0.71 in (18.00 mm) |
| Height / Outside Diameter | 0.71 in (18.00 mm) |
| Inside Diameter | 0.63 in (16.00 mm) |
| Weight | 0.3 oz (8 g) |
| Operating Temperature Range | -65°C to +165°C |
Recommended Applications
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Mobile and vehicle-mounted UHF (SO-239) antenna installations
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Amateur radio stations and antenna systems
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Emergency communications equipment
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Portable radio go-kits and go-boxes
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Temporary antenna removal and equipment storage
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Protection of exposed UHF female jack (SO-239) antenna bases
Keep your UHF female jack (SO-239) antenna connection protected when your antenna is not installed. The American Radio Supply G510 Weather Cap is a simple, practical accessory for helping maintain clean, protected, and ready-to-use radio equipment.
Compatibility note: Verify the connector thread and mounting configuration before ordering. This cap is intended for compatible UHF female jack (SO-239) antenna bases.
Other Details
See warranty details aboveProduct Videos
Custom Field
Product Reviews
67 Reviews Hide Reviews Show Reviews
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Five Stars
The caps look to be exactly as expected and I'm sure they will do the job., Purchase to receiving of the product was quick and they were well packed. Will purchase from this vendor again in the future.
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Great!
Protects my connectors from not only dust and dirt but also from damages.
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Great Product
This is the exact product I was wanting. Great job and product.
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Good Product
Good unit especially to cover unused antenna ports and covering the connectors of radios when not used. I can take the antenna off car to go through car wash. I like American Radio Supply has the little things I need.
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Great Product!
Does a great job of protecting my unused uhf connections.
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Good Quality
More expensive than what you will find on Amazon. These are actually waterproof, unlike the others. Perfect for the window feed through panel I built. [ STAFF NOTE | Thank you! Most similar parts on Amazon are manufactured in China. We do not source parts from China. Quality is our primary objective.
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Works Great
Need some available with chains to secure to equipment so they do not get lost. (STAFF NOTE - THANK YOU - PLEASE SEARCH SKU 37827 FOR CAPS WITH CHAINS).
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Nice Product
Nice Product to help keep unwanted dust or rain out of your antenna connectors.
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Must Have Product
These well-made items belong in every amateur radio operator’s tool kits.
