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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Great Product
These little caps are just what I needed to protect the SO-239 on my window pass-through. They keep the threads dry and without rust or coreshine.
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Five Stars
Exactly what I was looking for, for those un- used ports. Good pricing and fast delivery.
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Great Product
Great product, I made a through window for my antenna coax. I needed something to prevent the cold air from coming in on the fittings with no coax hooked up. I put these on the fittings and it took care of the draft. Great product, good price. I found out about these and were to get then from a friend that used them for the same set up but he was fighting an ant issue. They stopped that also.
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Nice Connectors
Nice connectors. Works for what it's designed to do. Shipped in short amount of time.
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High Quality
High quality, well-made caps that work as you would expect from American Radio Supply. All adapters and connectors I have purchased from them in the past have also been quality items.
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Good Quality
Good Quality
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Five Stars
I’ve used these dust caps on my station for many years. They help keep moisture out of the coax when the coax is temporarily taken out of service or if the coax is used as a spare. I’ve never had an issue with coax due to water egress when using the dust cap.
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Good Product
Not much to be said for these. No working parts, but they function just as advertised. The shopping experience was easy and direct. Shipped quickly and packed well. Will (have) buy from American Radio Supply again.
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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.
