Sea-Dog Line 60 Degree Hinged Rail Tee, 7/8 Inch Tube, 316 Stainless Steel - 290603-1

The Sea-Dog Line 290603-1 is a 60-degree hinged rail tee fitting built to create directional angle changes in boat handrail systems. Unlike a fixed-angle tee, the hinged design lets the two branch tubes pivot to match the exact rail angle on your boat, making it a practical solution where deck geometry does not fall on a standard fixed angle. It is machined from investment-cast 316 stainless steel, giving it strong resistance to saltwater corrosion and long-term exposure to marine environments, and it is sized for 7/8 inch O.D. Tube with a stainless tube wall thickness of 0.049 inch.

Installation uses set screws, which are included where appropriate for this fitting, and a 1/8 inch Allen wrench is required to tighten them and secure the tubing in place. Additional set screws can be purchased separately if needed. The fitting weighs 0.59 pounds and ships in a compact package measuring approximately 5.81 x 3.88 x 1.5 inches, making it easy to keep on hand as a spare for handrail repairs or new rail builds.

Specifications

• Brand: Sea-Dog
• Manufacturer Part Number: 290603-1
• Product Type: 60 Degree Hinged Rail Tee
• Tube O.D.: 7/8 inch
• Tube Wall Thickness: 0.049 inch
• Material: Investment cast 316 stainless steel
• Finish: Corrosion resistant
• Weight: 0.59 pounds
• Package Dimensions: 5.81 x 3.88 x 1.5 inches
• Installation Tool Required: 1/8 inch Allen wrench
• Includes: Set screws where appropriate
• Standard Pack: 10 each
• UPC: 035514290135

Fitment

• Fits 7/8 inch O.D. Handrail tubing

Frequently Asked Questions

What angle does the Sea-Dog 290603-1 rail tee create? The 290603-1 is a 60 degree hinged tee, and because it is hinged, the branch tubes can pivot to the exact angle needed rather than being locked at a fixed 60 degrees.

What tube size does this fitting work with? It is sized for 7/8 inch O.D. Handrail tubing, with a stainless tube wall thickness of 0.049 inch.

What material is the 290603-1 made from? It is investment cast from 316 stainless steel, which resists corrosion in saltwater and marine environments.

Does the 290603-1 include mounting hardware? Yes, set screws are included where appropriate for this hinged tee; additional set screws are also available separately if extras are needed.

What tool do I need to install the Sea-Dog 290603-1? A 1/8 inch Allen wrench is required to tighten the set screws and secure the tubing in the fitting.

How much does this rail tee weigh? The Sea-Dog 290603-1 weighs 0.59 pounds.

What is the difference between a hinged tee and a universal tee? The 290603-1 is the hinged version of Sea-Dog's 60 degree tee line, meaning the joint can pivot to fit the actual rail angle on the boat rather than being molded at one set angle.

Is the 290603-1 a left or right side specific fitting? No, the 60 degree hinged tee is not a side-specific part; it is used to create directionality in handrail runs based on where it is installed, not a designated port or starboard position.

What are the package dimensions of this fitting? The 290603-1 ships in a package measuring approximately 5.81 x 3.88 x 1.5 inches.

Can this fitting be used for new rail construction as well as repairs? Yes, the Sea-Dog 290603-1 hinged tee is used both to build new handrail runs and to replace a damaged tee fitting on existing 7/8 inch rail.