Sea-Dog Nylon Dual-Swivel Antenna Mount – Open Cable Feed | SED-329100-1
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Dual-Swivel Nylon Antenna Mount with Integrated Cable Feed
The Sea-Dog Nylon Dual-Swivel Antenna Mount is a lightweight, corrosion-proof mounting solution designed for boaters who want a clean, adjustable antenna installation without the bulk or cost of stainless steel. Injection-moulded from durable nylon, it handles UV exposure and salt spray without cracking, fading, or seizing.
What sets this mount apart is the open base design — your antenna coax feeds directly through the base, keeping the cable protected and out of sight for a professional-looking finish. The dual-swivel mechanism lets you position your antenna at the ideal angle for maximum signal, then holds it firmly in place underway.
Fits any antenna with a standard 1"-14 thread — the universal connection used by virtually all marine VHF, GPS, and AIS antennas — so it works with your existing gear right away.
Key Features
- Dual-swivel design — full angle adjustment for optimal antenna positioning
- Open cable feed base — routes coax cleanly through the mount for a tidy install
- Injection-moulded nylon — lightweight, corrosion-proof, and UV-resistant
- Fits any antenna with a standard 1"-14 thread
- Compact footprint: 2-1/2" W × 3-5/8" L × 5-5/8" H
Specifications
- Material: Nylon
- Thread: 1"-14 (standard marine antenna thread)
- Dimensions: 2-1/2" W × 3-5/8" L × 5-5/8" H
- MPN: 329100-1
Compatible & Related Products
- Sea-Dog White Nylon Ratchet Antenna Mount | SED-329130-1
- Sea-Dog White Nylon Fixed Antenna Base – 2-13/16" | SED-329500-1
- Sea-Dog Nylon Antenna Thread Adapter – 3/8"-24 to 1" Base | SED-329550-1
- Sea-Dog Nylon Antenna Stand-Off Bracket | SED-329780-1
- Sea-Dog 316 SS Antenna Mount Extension – 12" | SED-329532-1
- Sea-Dog 316 SS Antenna Mount Extension – 24" | SED-329536-1
🔧 Parts Desk Insights
Best use case: This is the preferred choice for boaters doing a clean new antenna installation on a fibreglass or aluminum deck where hiding the coax cable matters. The open cable feed base is the key differentiator — it lets you run the coax straight through the mount and down into the deck, eliminating exposed cable runs. Popular on centre consoles, walkarounds, and cruisers where a tidy helm area is a priority.
Heads up: If you don't need cable routing through the base and prefer a simpler ratchet-style mount, see the Sea-Dog White Nylon Ratchet Antenna Mount. For a fixed (non-adjustable) base, consider the Sea-Dog White Nylon Fixed Antenna Base. If your antenna has a 3/8"-24 thread, you'll need the thread adapter to fit this mount. Need more height? Add a 12" or 24" extension.
Shipping information
In-stock and OEM parts: ship same or next business day.
Locally warehoused items: ship within 3–4 business days.
Special-order items: timeline confirmed after order.
Returns & warranty
Returns & Satisfaction Guarantee
We stand firmly behind the quality of every product we sell. Your confidence matters to us — and we back it with a straightforward 30-Day Satisfaction Guarantee.
If you are not fully satisfied, you may request a return within 30 days of delivery. All returns must receive pre-approval prior to being sent back. Unauthorized returns will not be accepted.
To qualify for a return:
Item must be in new, unused condition
Product must be in its original packaging
All parts, components, hardware, manuals, and accessories must be included
Packaging must be undamaged and suitable for resale
Important:
Electronics are strictly inspected. No returns on open-box electronics. Exceptions may apply only with prior written approval. Any electronic unit that has been installed, powered, activated, or altered may not be eligible for return.
We are serious about product integrity — and equally serious about taking care of our customers. If there is ever a product issue, contact us immediately so we can make it right.
For return authorization, please contact our support team before shipping anything back.