Description
Attwood 1-1/2" 316 SS Straight Thru-Hull | Boat Supply Store
Engineered for demanding marine environments, this Attwood thru-hull fitting resolves the issue of premature corrosion and structural compromise common with lesser materials. Its robust construction utilizes Enhanced 316 Stainless Steel, boasting a 3" flange diameter and 1-1/2" inner diameter, ensuring superior longevity even in saltwater applications. The 2-1/2" thread length accommodates hulls up to 1-7/8" thick, making it ideal for bilge pump discharge or livewell plumbing on a flats skiff operating in the Gulf Coast's brackish waters.
Key Features
- Superior Strength certified Enhanced 316 Stainless Steel alloy construction provides lifetime corrosion resistance.
- Premium Aesthetics mirror-polished finish on visible areas, passivated for enhanced protection.
- Durability thick steel sidewalls withstand continual stress and hose flexing.
- Simplified Installation silicone gasket included for faster, easier fitting.
- Leak Prevention channel under flange holds sealant for a trouble-free seal.
- One-Person Installation wrench flats/end notch allow internal tightening.
- Secure Hose Attachment barbed tail ends provide ample space for multiple hose clamps.
- Versatile Fitment standard full-length thread accommodates thick hulls for easy tightening.
Specifications
| Product Specifications | |
|---|---|
| Inner Diameter | 1-1/2" |
| Material | Enhanced 316 Stainless Steel |
| Flange Diameter | 3" |
| Thread O.D. | 1-7/8" |
| Thread Length | 2-1/2" |
| Barb Length | 1-1/4" |
| Total Length | 4-1/8" |
| Install Hole Saw Size | 2" |
| Thread Size | 1-1/2" NPSM |
| Max Hull Thickness | 1-7/8" |
| Installation Location | Above the waterline only |
Who This Is For
Boat owners and marine professionals requiring a high-performance thru-hull fitting that offers exceptional corrosion resistance and aesthetic appeal. Ideal for applications above the waterline where longevity and a professional finish are paramount.
How It Compares
| Feature | Attwood 1-1/2" 316 SS Straight Thru-Hull | Competitor |
|---|---|---|
| Material | Enhanced 316 Stainless Steel | Bronze |
| Hose Size (Inner Diameter) | 1-1/2" | 1-1/2" |
| Thread Size | 1-1/2" NPSM | 1-1/2" NPSM |
| Flange Diameter | 3" | — |
| Corrosion Resistance | Excellent | Good |
Common Concerns Answered
Is this fitting susceptible to galvanic corrosion or rust?
No, the Attwood thru-hull is constructed from certified Enhanced 316 Stainless Steel alloy, renowned for its superior corrosion resistance, especially in marine environments, and is additionally passivated for further protection.
Will this thru-hull fitting last longer than cheaper plastic alternatives?
Absolutely. The robust Enhanced 316 Stainless Steel construction with thick sidewalls is engineered to withstand continual stress and hose flexing, offering significantly greater longevity and structural integrity compared to plastic fittings.
Is the installation process complicated?
Installation is rated 2/5, requiring basic DIY skills. Features like the included silicone gasket, sealant channel, and internal tightening capability are specifically designed to simplify the process compared to standard fittings.
Frequently Asked Questions
What is the maximum hull thickness this thru-hull fitting can accommodate?
This thru-hull fitting can accommodate a maximum hull thickness of 1-7/8 inches.
Is this thru-hull fitting suitable for use below the waterline?
No, this Attwood thru-hull fitting is designed for above the waterline installation only.
What type of stainless steel is used for this Attwood thru-hull fitting?
This Attwood thru-hull fitting is constructed from certified Enhanced 316 Stainless Steel alloy.
What is the recommended hole saw size for installing this fitting?
The recommended hole saw size for installing this fitting is 2 inches.
How is the sealant applied for a trouble-free seal with this fitting?
A channel is integrated beneath the flange to hold a bead of sealant, facilitating easier and more effective application to ensure a watertight seal.
