316 Stainless Steel Construction: Solid cast construction ensures durability and resistance to corrosion. Polished Flange Design: Highly polished flange enhances the boat's visual appeal for a sophisticated look. Space-Efficient Thread Length: Short 3/4" threads accommodate tight hull spaces for versatile installation. 1 1/8" I.D Marine Hose Compatibility: Hose barbs perfectly fit marine hoses, ensuring seamless compatibility. Trusted Original Equipment: These fittings are used on various offshore saltwater fishing boats, emphasizing their reliability and quality. This thru-hull fitting is constructed from solid cast 316 stainless steel, offering enhanced corrosion resistance and durability in saltwater marine environments. Designed for through-hull plumbing installations where space is limited, the fitting features a compact 3/4-inch thread length that enables secure mounting without requiring excessive hull depth. The flange is mirror-polished for reduced friction, ease of sealing, and long-term resistance to pitting and oxidation. The integrated hose barb fits 1-1/8 inch inner diameter hoses, supporting standard marine plumbing systems used for bilge discharge, livewell intake, and drainage. Each fitting includes a 316 stainless steel mounting nut for a complete installation solution. Outside Flange Diameter: 2-1/4 inches Thread Length: 3/4 inch Overall Length (Inside Flange): 2-1/4 inches Required Hole Size: 1-5/8 inches Hose Inner Diameter (ID): 1-1/8 inches Material: Solid Cast 316 Stainless Steel Finish: Mirror-Polished Mounting Hardware: Includes 316 stainless steel nut Application: Suitable for freshwater and saltwater marine plumbing systems This component is designed for marine vessels operating in high-moisture or corrosive environments where long-term resistance to chemical exposure, saltwater, and UV degradation is required. The compact form factor allows installation in confined hull spaces, making it suitable for tight transom or deck areas. Its one-piece cast design eliminates welds and seams that may weaken over time. Compatibility with standard hose sizes ensures integration with existing plumbing systems without modification. This fitting is used by original equipment manufacturers and marine service technicians for new vessel construction and retrofit applications requiring performance, dimensional accuracy, and corrosion resistance in critical water management systems.