Attwood Stainless Steel Thru-Hull Standard Straight Barbed - 1" Inner Diameter

Upgrade your vessel with our Stainless Steel Thru-Hull Standard Straight Barbed fittings, designed to deliver exceptional durability and performance. Engineered for marine environments, these fittings ensure a long-lasting, corrosion-resistant solution for your boat’s needs.

Durable Stainless Construction

Crafted from high-quality materials, our thru-hulls are built to withstand the harshest marine conditions:

• Enhanced 316 Stainless Steel Alloy: Cast for superior strength and lifetime corrosion resistance.
• Mirror-Finished Surface: All visible areas are polished to a brilliant shine and passivated for extra protection.
• Thick Steel Sidewalls: Designed to endure continuous stress and frequent hose flexing without compromising integrity.

Faster, Simpler Installation

Experience hassle-free installation with features that save time and ensure a secure fit:

• Included Silicone Gasket: Each thru-hull comes with a new gasket for a reliable seal.
• Sealant Channel: A built-in channel under the flange holds a bead of sealant, facilitating a trouble-free installation.
• Wrench Flats & End Notches: Provide ample gripping surfaces, allowing a single installer to tighten all connections from inside the hull.
• Barbed Tail Ends: Offer ample space to secure multiple clamps, ensuring a tight and leak-free connection.

Stainless Steel Straight Thru-Hulls, Barbed

Our standard thread models feature a full-length thread, making them ideal for thick hulls and providing easy tightening for a secure fit.

Specifications

Feature	Details
Hose Size	1" Inner Diameter
Flange Diameter	2-1/4"
Thread O.D.	1-3/8"
Thread Length	2-1/4"
Barb Length	1-1/4"
Total Length	3-7/8"
Install Hole Saw Size	1-1/2"
Thread NPSM	1"
Max Hull Thickness	1-3/4"
Material	Stainless Steel
Box Dimensions	3"H x 4"W x 7"L
Weight	0.8 lbs
UPC	022697665485

Note: Stainless Steel Thru-Hull Connectors are designed for installation above the water line only.

Download the Quick Guide (PDF)

Orders of physical products placed by 3 PM EST M-F typically ships the same day, if all requested items are in stock. Weekend orders will typically ship on Monday.

Shipping takes 2-7 days.

We currently ship to the Contiguous 48 States.

Life of Sailing merch is custom made for the customer after an order is placed. Total turnaround is typically 7-14 days from order to doorstep.