{"product_id":"attwood-66549-3-stainless-steel-straight-thru-hull-fitting-1-1-4-barb-standard-length","title":"Attwood 66549-3 Stainless Steel Thru-Hull Fitting, 1-1\/8 Inch I.D.","description":"\u003cp\u003eThe attwood 66549-3 is a stainless steel barbed thru-hull fitting built for below-waterline plumbing installations such as bilge pump discharge, livewell drains, washdown lines, and raw water intake runs. It is cast from certified enhanced #316 stainless steel for strength and long-term corrosion resistance in a marine environment. All visible surfaces are polished to a mirror finish, then the part is passivated for an additional layer of protection against pitting and rust.\u003c\/p\u003e\u003cp\u003eThe fitting has a 1-1\/8 inch inside diameter and a barbed tail end sized to accept and hold multiple hose clamps for a secure connection. Thick stainless sidewalls resist stress and repeated hose flexing over time, and a channel molded under the flange holds a bead of sealant so the fitting can be bedded and sealed from a single side. Wrench flats or an end notch are provided on the body so one installer can tighten the connection entirely from inside the hull, without needing a second person outside the boat. It is backed by attwood's Lifetime Warranty.\u003c\/p\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e attwood\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number:\u003c\/strong\u003e 66549-3\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e #316 Stainless Steel\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFinish:\u003c\/strong\u003e Polished, passivated mirror finish\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInside Diameter:\u003c\/strong\u003e 1-1\/8 inch\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThread Outside Diameter:\u003c\/strong\u003e 1-3\/8 inch\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThread Length:\u003c\/strong\u003e 2-3\/8 inch\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThread Type:\u003c\/strong\u003e 1 inch NPSM\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBarb Length:\u003c\/strong\u003e 1-1\/4 inch\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTotal Length:\u003c\/strong\u003e 3-7\/8 inch\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstallation Hole Saw Size:\u003c\/strong\u003e 1-1\/4 inch\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaximum Hull Thickness:\u003c\/strong\u003e 1-3\/4 inch\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 0.8834 pounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUPC:\u003c\/strong\u003e 022697665492\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eWhat is the inside diameter of the attwood 66549-3 thru-hull fitting?\u003c\/strong\u003e The attwood 66549-3 has a 1-1\/8 inch inside diameter, sized for hose barb connections in bilge, livewell, washdown, and raw water plumbing runs.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat material is this thru-hull fitting made from?\u003c\/strong\u003e It is cast from certified enhanced #316 stainless steel, then polished to a mirror finish and passivated for additional corrosion resistance.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat size hole saw do I need to install the 66549-3?\u003c\/strong\u003e A 1-1\/4 inch hole saw is used to cut the mounting hole for the attwood 66549-3 thru-hull fitting.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is the maximum hull thickness this fitting will work with?\u003c\/strong\u003e The attwood 66549-3 is rated for hulls up to 1-3\/4 inch thick, based on its 2-3\/8 inch thread length.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eCan one person install this thru-hull fitting alone?\u003c\/strong\u003e Yes. The 66549-3 has wrench flats or an end notch on the body so the fitting can be fully tightened from inside the hull by a single installer.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes the attwood 66549-3 come with a gasket?\u003c\/strong\u003e Attwood thru-hull fittings in this series are available with a new silicone gasket for sealing against the hull surface.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow is the fitting sealed against the hull?\u003c\/strong\u003e A channel molded under the flange of the 66549-3 holds a bead of sealant, allowing a trouble-free seal to be applied during installation.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is the total length and thread length of this fitting?\u003c\/strong\u003e The attwood 66549-3 has a total length of 3-7\/8 inch and a thread length of 2-3\/8 inch, with a 1 inch NPSM thread.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow many hose clamps can be used on the barb end?\u003c\/strong\u003e The 1-1\/4 inch barb length on the 66549-3 provides enough room to secure multiple hose clamps for a redundant, leak-resistant connection.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the attwood 66549-3 covered by a warranty?\u003c\/strong\u003e Yes, attwood backs this stainless steel thru-hull fitting with a Lifetime Warranty.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat uses is this thru-hull fitting designed for?\u003c\/strong\u003e The 66549-3 is intended for marine plumbing installations such as bilge pump discharge, livewell drains, washdown systems, and water intake lines.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhy choose stainless steel over a plastic thru-hull fitting?\u003c\/strong\u003e The attwood 66549-3 uses #316 stainless steel with thick sidewalls that resist stress and repeated hose flexing, offering longer service life below the waterline than plastic fittings.\u003c\/p\u003e","brand":"Attwood","offers":[{"title":"Default Title","offer_id":48989673291995,"sku":"ATT-66549-3","price":39.63,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0839\/7586\/4539\/files\/819R00BLkIL.jpg?v=1784487034","url":"https:\/\/www.goodvibesmarina.com\/products\/attwood-66549-3-stainless-steel-straight-thru-hull-fitting-1-1-4-barb-standard-length","provider":"Good Vibes Marina","version":"1.0","type":"link"}