Description
Attwood 3/4" SS Straight Thru-Hull Barbed Fitting | Boat Supply Store
This Attwood thru-hull fitting is engineered for demanding marine environments above the waterline. Constructed from certified Enhanced 316 Stainless Steel, it offers superior strength and lifetime corrosion resistance, crucial for saltwater applications common on the Texas coast. With a 1-7/8" flange diameter and a 3/4" inner diameter barb, it securely accommodates standard marine hoses up to 1-5/8" thick hulls, ensuring a reliable connection for bilge pumps or washdowns.
Key Features
- Certified Enhanced 316 Stainless Steel construction for superior strength and lifetime corrosion resistance.
- Mirror Polish and Passivation on visible areas provides enhanced protection and a premium aesthetic.
- Thick Steel Sidewalls engineered to withstand constant stress and hose flexing.
- New Silicone Gasket ensures easier and more reliable sealing during installation.
- Wrench Flats enable one-person installation from inside the hull.
- Generous Barb Length offers ample space for secure attachment of multiple hose clamps.
- Full-Length Threading on standard models accommodates thick hulls and facilitates secure tightening.
- Designed for Above Waterline applications, ensuring optimal performance in exposed areas.
Specifications
| Product Specifications | |
|---|---|
| Hose Size (Inner Diameter) | 3/4" |
| Flange Diameter | 1-7/8" |
| Thread Outer Diameter | 1" |
| Thread Length | 2" |
| Barb Length | 1-1/4" |
| Total Length | 3-3/4" |
| Hole Saw Size Required | 1-1/8" |
| Maximum Hull Thickness | 1-5/8" |
| Thread Type | 3/4" NPSM |
Who This Is For
Boat owners and marine professionals demanding exceptionally durable and corrosion-resistant thru-hull fittings for above-waterline installations. Prioritizes longevity and a clean, professional finish for critical marine plumbing systems.
How It Compares
| Feature | Attwood 3/4" SS Straight Thru-Hull Barbed Fitting | Perko Bronze Thru |
|---|---|---|
| Material | Enhanced 316 Stainless Steel | Bronze, 304 Stainless Steel |
| Hose Size (Inner Diameter) | 3/4" | 1-1/4", 3/4" |
| Corrosion Resistance | Excellent | Good, Good |
| Finish | Mirror Polish & Passivated | Cast Bronze, Polished |
| Max Hull Thickness | 1-5/8" | 1-1/2", 1-1/2" |
Common Concerns Answered
Are replacement gaskets readily available if the original is lost?
While the silicone gasket offers a superior seal, it's advisable to retain the original. If a replacement is needed, specific Attwood gasket kits may be sourced through authorized marine parts distributors.
Is this fitting a significant investment compared to other options?
The higher initial cost reflects the superior Enhanced 316 Stainless Steel construction and premium finish, providing unmatched longevity and corrosion resistance, making it a cost-effective choice over its extended service life.
How does this compare to lower-grade stainless steel fittings?
Enhanced 316 Stainless Steel offers superior resistance to pitting and crevice corrosion compared to 304 grade, especially in harsh marine environments, ensuring sustained integrity and performance.
Frequently Asked Questions
What is the maximum hull thickness this thru-hull fitting can accommodate?
This thru-hull fitting is designed to accommodate hulls up to a maximum thickness of 1-5/8 inches.
Is this thru-hull fitting suitable for use below the waterline?
No, this specific Attwood thru-hull fitting is designed and rated for above the waterline installation only.
What type of hose clamp is recommended for this barbed fitting?
For optimal security on the ample barb length, we recommend using two marine-grade stainless steel hose clamps on the 3/4" inner diameter hose.
What is the thread size of this thru-hull fitting?
The thread specification for this fitting is 3/4" NPSM (National Pipe Straight Mechanical).
What is the flange diameter of this thru-hull fitting?
The flange diameter of this Attwood thru-hull fitting is 1-7/8 inches.
