Sea-Dog 316 SS Adjustable Deck Mount Antenna Base (Bulk) | SED-329230
Free returns on all eligible orders
You have 30 days to request a return. All sale items are final sale.
Mount Any Standard Antenna — Built to Last in Saltwater
The Sea-Dog 316 Stainless Steel Adjustable Deck Mount Antenna Base is a professional-grade mounting solution for boaters who need a secure, corrosion-resistant platform for their VHF, GPS, or AIS antenna. Cast from marine-grade 316 stainless steel, this base is engineered to handle the harshest saltwater environments without pitting, staining, or seizing.
The dual-swivel design lets you fine-tune your antenna angle for optimal signal reception, while the integrated cable feed system keeps your installation clean and protected from chafe. Fits any antenna with a standard 1"-14 thread — the industry-standard connection used by virtually all marine VHF and GPS antennas.
This is the bulk (unboxed) version of the SED-329230-1 — identical hardware, ideal for installers and dealers stocking multiple units.
Key Features
- Marine-grade 316 stainless steel — superior corrosion resistance vs. 304 SS
- Dual-swivel design for adjustable antenna positioning
- Integrated cable feed — routes coax cleanly through the base
- Accepts any antenna with standard 1"-14 thread
- Compact footprint: 2-1/2" W × 2-15/16" L × 4-1/2" H
- Bulk/unboxed format — same hardware as retail pack
Specifications
- Material: 316 investment cast stainless steel
- Thread: 1"-14 (standard marine antenna thread)
- Dimensions: 2-1/2" W × 2-15/16" L × 4-1/2" H
- MPN: 329230
- Format: Bulk (unboxed)
Compatible Products
- Sea-Dog 316 SS Adjustable Deck Mount Antenna Base (Retail) – SED-329230-1
- Sea-Dog 316 SS Antenna Mount Extension – 12" | SED-329532
- Sea-Dog 316 SS Antenna Mount Extension – 24" | SED-329536-1
- Sea-Dog Nylon Antenna Thread Adapter – 3/8"-24 to 1" Base | SED-329550-1
- Shakespeare 410-R Deck & Side Swivel Mount Kit
🔧 Parts Desk Insights
Best use case: This base is the go-to choice for permanent deck installations on powerboats and sailboats where a clean, adjustable mount is needed for a VHF radio antenna, GPS puck, or AIS antenna. The integrated cable feed is especially valued on new builds and full rewires where a tidy coax run matters. The bulk format is popular with marine electricians and dealers outfitting multiple vessels.
Heads up: If you need a fixed (non-swivel) mount, consider the Sea-Dog 304 SS Fixed Flange Antenna Base. For tube-rail mounting, see the Sea-Dog 316 SS Tube Mount Antenna Base. If your antenna has a 3/8"-24 thread (common on handheld-style antennas), you'll need the thread adapter as well.
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.