Sea-Dog 281900-1 90 Degree Rectangular Base Rail Fitting, 7/8 Inch Tube

The Sea-Dog 281900-1 is a 90 degree rectangular base rail fitting designed to join a 7/8 inch outer diameter rail tube to a flat mounting surface at a right angle. It is investment cast from 316 stainless steel, a corrosion resistant alloy well suited to saltwater exposure on deck rails, bimini frames, and other tubular rail assemblies. The rectangular base measures 1-11/16 inch by 3 inch and is drilled for #10 flat head fasteners.

Where appropriate for the fitting design, a set screw secures the tube inside the fitting; a 1/8 inch Allen wrench is required to install it. Matching set screws are also available separately for replacement. The fitting mounts to the base surface using four flat head fasteners, which are not included, and is built for use with tubing having a stainless wall thickness of 0.049 inch.

Specifications

• Brand: Sea-Dog
• Manufacturer Part Number: 281900-1
• Fitting Type: 90 Degree Rectangular Base Rail Fitting
• Tube Outer Diameter: 7/8 inch
• Base Dimensions: 1-11/16 inch x 3 inch
• Fastener Size: #10 Flat Head
• Material: 316 Stainless Steel, Investment Cast
• Finish: Corrosion Resistant
• Stainless Tube Wall Thickness: 0.049 inch
• Weight: 0.41 pounds
• Installation Tool Required: 1/8 inch Allen Wrench
• Mounting Fasteners: Four Flat Head Fasteners (not included)
• UPC: 035514281072

Fitment

Fits 7/8 inch outer diameter rail tubing.

Frequently Asked Questions

What tube diameter does the Sea-Dog 281900-1 fit? The 281900-1 fits 7/8 inch outer diameter rail tubing, matching it to the rectangular base for a 90 degree connection.

What material is this rail fitting made from? It is investment cast from 316 stainless steel, a corrosion resistant alloy suited to marine environments.

What angle does the 281900-1 create between the tube and the mounting surface? A 90 degree angle, joining the rail tube to a flat base at a right angle.

What are the base dimensions of this fitting? The rectangular base measures 1-11/16 inch by 3 inch on the Sea-Dog 281900-1.

Are mounting fasteners included with the 281900-1? No. The fitting mounts with four #10 flat head fasteners that are not included and must be purchased separately.

What tool is needed to install this fitting? A 1/8 inch Allen wrench is required to install the Sea-Dog 281900-1, which uses a set screw to secure the tube.

Can I buy a replacement set screw for this fitting? Yes, a matching set screw for the 281900-1 is available separately as part number 299999-1.

How much does the 281900-1 weigh? The Sea-Dog 281900-1 weighs 0.41 pounds.

What wall thickness of rail tube does this fitting accommodate? It is built for stainless tubing with a wall thickness of 0.049 inch.

Is there a version of this fitting for 1 inch tube? Yes, Sea-Dog offers a 1 inch tube version of the 90 degree rectangular base fitting under a different part number, 281901-1, so confirm your tube diameter before ordering the 281900-1.

Will this fitting rust or corrode on a boat? The 281900-1 is investment cast 316 stainless steel, chosen specifically for corrosion resistance in marine use.

What is included when I order the 281900-1? You receive the Sea-Dog 281900-1 rail fitting itself; mounting fasteners and the installation Allen wrench are not included.