90 Degree Rectangular Base Rail Fitting for 7/8 Inch and 1 Inch Tube
Description du produit
Le présent 316 stainless steel marine hand rail base is designed for secure mounting of 7/8 inch (22 mm) and 1 inch (25 mm) tube on boats, yachts, and other marine rail systems. The 90 degree rectangular base design provides a stable connection between the rail tube and mounting surface, making it suitable for handrail, guard rail, and supporting tube installations in marine environments.
Fabriqué à partir de marine grade 316 stainless steel avec un high-polish mirror finish, this rail fitting offers strong resistance to saltwater corrosion, rust, and outdoor exposure, making it suitable for long-term use in harsh coastal conditions. The polished surface also gives the fitting a clean appearance that matches modern marine hardware and stainless boat fittings.
The fitting uses a double set-screw reinforcement design to improve holding strength and installation stability. A drainage hole structure helps with ventilation and moisture release, while the rectangular base allows secure surface mounting on decks, gunwales, and other rail installation points. This model is available for 22 mm and 25 mm tube sizes.
Caractéristiques principales
- Marine grade 316 stainless steel for corrosion resistance in saltwater environments
- 90 degree rectangular base for stable tube mounting
- Convient pour 7/8 inch (22 mm) et 1 inch (25 mm) tube
- Finition polie miroir to match marine rail hardware
- Double set-screw reinforcement for improved grip and stability
- Drainage hole design helps reduce moisture buildup
Spécifications techniques

| Modèle | Tube Size | A | B | C | D | E | F | G | H | K | M | Poids |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| SM1808-22 | 7/8″ (22 mm) | 77 | 44 | 45 | 22.8 | 29.5 | 62.5 | 90° | 5 | 5.5 | M6 | 158 g |
| SM1808-25 | 1″ (25 mm) | 82 | 47 | 45 | 25.8 | 30 | 65 | 90° | 5 | 6.5 | M6 | 175 g |
General Specifications
| Objet | Spécifications |
|---|---|
| Type de produit | Marine Hand Rail Base / Base Rail Fitting |
| Matériau | Acier inoxydable 316 |
| Surface Finish | Mirror Polished |
| Type de base | Base rectangulaire |
| Angle | 90 Degree |
| Tube Size Options | 22 mm / 25 mm |
| Type de montage | Surface Mount |
| Fixing Method | Double Set Screw |
Model Guidance
- SM1808-22: for 7/8 inch (22 mm) tube systems
- SM1808-25: for 1 inch (25 mm) tube systems
Applications
- Boat and yacht hand rail installation
- Marine guard rail and support tube mounting
- Deck, gunwale, and platform rail systems
- Stainless rail fitting replacement for marine vessels
- Outdoor installations where corrosion resistance is important

FAQ
1. Why choose 316 stainless steel for a marine hand rail base?
316 stainless steel offers better resistance to saltwater corrosion and rust, making it more suitable for long-term marine use than lower-grade stainless steel.
2. What tube sizes fit this hand rail base?
This model is available for 7/8 inch (22 mm) et 1 inch (25 mm) tube, so the correct size should be selected to match your rail system.
3. Is this a 90 degree rail base fitting?
Yes. The models shown on this page are 90 degree rectangular base rail fittings for vertical or upright tube mounting applications.
4. What is the benefit of the double screw design?
The double set-screw reinforcement helps improve holding strength and keeps the tube more stable after installation.
5. Can this fitting be used outdoors in coastal environments?
Yes. It is designed for marine and outdoor use where corrosion resistance, durability, and secure rail mounting are required.










