Designed for secure and reliable marine railing installation, this 316 Stainless Steel Rectangular Base Rail Fitting provides a strong mounting connection between square tubing and a boat deck or other mounting surface.
The angled rectangular base design allows the rail or support tube to be positioned at a practical angle, making it suitable for boat handrails, guard rails, yacht railings, Bimini structures and other marine frame applications.
Manufactured from marine-grade 316 stainless steel, this square tube base fitting offers excellent corrosion resistance, strength and durability in demanding freshwater and saltwater environments.
The polished stainless steel surface provides a bright, professional appearance while helping the fitting remain easy to clean and maintain.
The rectangular mounting base features multiple countersunk holes for secure surface installation with suitable fasteners, while the tube socket provides a stable connection for compatible square or rectangular tubing.
Available in 7/8-inch (22 mm) and 1-inch (25 mm) sizes, this Marine Rail Fitting is suitable for a variety of boats, yachts, fishing boats, cruisers, pontoons and other marine vessels.
It can also be used for replacement, repair and new railing installations. Combining a practical angled design, rectangular mounting base and corrosion-resistant stainless steel construction, this fitting provides dependable support for marine handrail and railing systems.
Brand | LGRIG® |
Product Name | 316 Stainless Steel Rectangular Base Rail Fitting for Square Tube |
Common Name | Rectangular Base Rail Fitting |
Product Type | Marine Rail Fitting / Square Tube Base Fitting |
Material | 316 Stainless Steel* |
Surface | High Polished / Mirror Polished |
Base Type | Rectangular Base |
Tube Type | Square / Rectangular Tube |
Angle | 30°/ 40° |
Feature | Corrosion Resistant, Durable, Strong, Stable Mounting |
Mounting Type | Surface / Deck Mount |
Mounting Holes | Multiple Countersunk Holes |
Tube Sizes | 7/8" (22 mm), 1" (25 mm) |
Use | Connecting Square Tube to Deck or Mounting Surface |
Application | Boat Handrails, Railings, Bimini Structures, Marine Frames |
Suitable For | Boats, Yachts, Fishing Boats, Cruisers, Pontoons |
Marine Application | Yes |
Origin | China |

Part No. | SIZE | A (mm) | B (mm) | C (mm) | D (mm) | E (mm) | F (mm) | G | H (mm) | M | Weight(KG) |
LGSSB30RT22 | 7/8" (22mm) | 77.0 | 44.0 | 38.0 | 22.8 | 29.5 | 5.5 | 30° | 5.0 | M6 | 0.150 |
LGSSB30RT25 | 1" (25mm) | 82.0 | 47.0 | 38.0 | 25.8 | 30.0 | 6.5 | 40° | 5.0 | M6 | 0.157 |