The Attwood Stainless Steel Thru-Hull Short Straight Barbed fitting is built for reliable boat plumbing above the waterline, offering a compact profile and durable performance in harsh marine conditions.
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Hose size: 1" inner diameter
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Design: Compact short-thread profile for tight spaces and near corners
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Flange diameter: 2-1/4"
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Thread O.D.: 1-3/8"
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Thread length: 1-1/8"
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Barb length: 1"
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Total length: 2-1/2"
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Install hole saw size: 1-1/2"
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Thread NPSM: 1"
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Max hull thickness: 5/8"
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Material: Stainless steel (Enhanced 316)
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Finish & protection: Mirror finish; passivated for extra protection
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Gasket: Silicone gasket improves installation speed and reliability
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Sealant channel: Channel under the flange holds a bead of sealant for a trouble-free seal
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Grip surfaces: Wrench flats or end notch for easy gripping; most connections tighten from inside the hull
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Clamping compatibility: Barbed tail accommodates multiple clamps for secure hose retention
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Installation guidance: Designed for installation above the water line only
This thru-hull fitting pairs a robust Enhanced 316 stainless body with a practical, easy-to-install design. The silicone gasket and sealant channel work together to deliver a reliable, leak-resistant seal, while the short-thread profile fits tight installations without compromising strength. Perfect for offshore adventures or dockside setups, it provides long-lasting performance and secure hose retention with straightforward maintenance.
