Attwood Marine Stainless Steel Thru-Hull Fitting with Barbed End - 5/8" Inner Diameter

Stainless Steel Thru-Hull Standard Straight Barbed - 5/8" Inner Diameter

Polish your image with these beautiful, durable stainless steel fittings. Why specify plastic parts when these fittings will last the life of the boat

Rugged Stainless Construction:

• Cast from certified Enhanced 316 Stainless Steel alloy for strength and lifetime corrosion-resistance
• All visible areas are polished to a mirror finish, then passivate each part for additional protection
• Thick steel sidewalls withstand continual stress and hose flexing

Faster, Simpler Installation:

• Each Thru-Hull is available with a new silicone gasket
• A channel under the flange holds a bead of sealant, making it easier to apply a trouble-free seal
• All models have wrench flats or an end notch to hold as a gripping surface; one installer can tighten all connections from inside the hull
• The barbed tail ends provide plenty of room to hold multiple clamps

Stainless Steel Straight Thru-Hulls, Barbed

• Standard Thread model has a full-length thread for thick hulls and easy tightening

Specifications:

• Hose size: (inch) 5/8" inner diameter
• Flange Diameter: (inch) 1-7/8"
• Thread O.D. (outside diameter): (inch) 1"
• Thread Length: (inch) 2"
• Barb Length: (inch) 1-1/4"
• Total Length: (inch) 3-3/4"
• Install Hole Saw Size: (inch) 1-1/8"
• Thread NPSM: (inch) 3/4"
• Max Hull Thickness: (inch) 1-1/16"

*Stainless Steel Thru-Hull Connectors are designed for installation above the water line only

Enhance your boat’s durability and appearance with the Attwood Marine Stainless Steel Thru-Hull Fitting, part number 66546-3. Crafted from certified Enhanced 316 stainless steel alloy, this fitting offers exceptional strength and corrosion resistance, ensuring reliable performance in harsh marine environments. Its polished mirror finish and passivation process provide a sleek, professional look that complements any vessel’s aesthetic. Designed for above-water-line installation, it features a robust construction with thick steel sidewalls that withstand continuous stress and hose flexing, making it a long-lasting choice for marine applications. The standard threaded model includes a full-length thread suited for thicker hulls, simplifying installation and providing a secure fit. The 5/8-inch inner diameter hose connection is complemented by a barb end, allowing multiple clamps to ensure a tight, leak-proof seal. The flange diameter measures approximately 1-7/8 inches, with a total length of about 3-3/4 inches, making it suitable for a variety of hull thicknesses up to 1-1/16 inches. Installation is straightforward with features like wrench flats or an end notch for gripping, and a channel under the flange that holds sealant or a bead of sealant for a trouble-free seal. The inclusion of a silicone gasket enhances waterproofing and durability, reducing installation time and hassle. Suitable for marine professionals and DIY enthusiasts alike, this fitting combines high-quality materials with ease of installation, providing a reliable connection that will last the life of your boat. Whether upgrading existing fittings or installing new hardware, the Attwood Marine stainless steel thru-hull ensures a secure, corrosion-resistant, and visually appealing addition to your vessel's plumbing system.

Features:

• Constructed from certified Enhanced 316 stainless steel for superior strength and corrosion resistance

• Mirror-polished finish with passivation for enhanced protection and aesthetics

• Thick sidewalls designed to withstand continual stress and hose flexing

• Includes a silicone gasket for a secure and waterproof seal

• Channel under flange holds sealant for easier installation

• Wrench flats or end notch for easy gripping and tightening from inside the hull

• Barbed tail ends accommodate multiple hose clamps for a tight connection

• Full-length threaded model suitable for thick hulls and easy tightening

• Designed for installation above the water line