Sea-Dog 270540 Lifeline Fitting, 4° Rect. Base, 1"
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Sea-Dog Lifeline Fitting 270540 is a corrosion-resistant stainless steel lifeline base designed for 1" tubing. It features a 4° rectangular base for clean alignment in rail and lifeline installations.
Key Features
- 4° rectangular base design for lifeline alignment
- For 1" OD tubing
- Corrosion resistant investment cast 316 stainless steel
- Base installs using FH fasteners (not included)
Intended Use
- Marine lifeline rail and stanchion systems
- Boat deck handrail/lifeline fittings
- Stainless rail and stanchion hardware installations
Product Details
- SKU: 354-2705401
- Sea-Dog part family/model: 270540 (270540-1)
- Type: Lifeline fitting with 4° rect. base
- Tube size: 1" OD
- Base size: 2-13/16" x 3-9/16"
- Fastener note: Bases install with 1/4" FH fasteners (not included)
- Material: 316 stainless steel (investment cast)
- Dimensions/weight (as listed with SKU): Length 3.56 in; Width 2.8 in; Height 2.09 in; Weight 0.91 lb
- Set screw/install note from Sea-Dog documentation: requires 1/8" Allen wrench to install; set screws available separately (as applicable for this family)
Parts Desk Insights
Best Use Case: Use this fitting when you need a stainless lifeline base for 1" OD tubing with a 4° rectangular base to maintain proper lifeline line-up on deck/rail layouts.
Common Issues: Common install issues include mismatched tube size (confirm it’s 1" OD), missing/incorrect fasteners at the base (the base uses 1/4" FH fasteners—often not included), and alignment problems when the angle/base style doesn’t match the intended rail geometry. Check the Sea-Dog rail fitting diagram and mating hardware before tightening.
Related Products & Accessories
- Browse Sea-Dog rail and lifeline fittings - Find matching lifeline bases, stanchion fittings, and related rail hardware in the Rails & Stanchions collection.
Shipping information
In-stock and OEM parts: ship same or next business day.
Locally warehoused items: ship within 1-3 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.