{"product_id":"t-h-marine-garboard-drain-plug-1-2-inch-npt-brass","title":"T-H Marine Garboard Drain Plug, 1\/2-Inch NPT Brass","description":"\u003cp class=\"nvn-hero\"\u003eThe garboard drain plug is the little brass fitting you never think about until it fails. This T-H Marine plug threads into the lowest drain point of your transom with a standard 1\/2-inch NPT thread. Machined brass shrugs off salt and corrosion. Thread it in before launch, pull it on the trailer, and the bilge drains dry.\u003c\/p\u003e\n\n\u003cdiv class=\"nvn-description\"\u003e\n\u003cp\u003eThe garboard drain plug is one of those small brass parts you never think about until the day it fails. This is T-H Marine's 1\/2-inch NPT threaded brass garboard plug, the fitting that seals the lowest drain point of your transom while you're on the water. Pull it on the trailer and the boat drains dry. Thread it back in before you launch and you're buttoned up.\u003c\/p\u003e\n\u003cp\u003eThe garboard is the lowest seam of the hull, right where the bottom meets the transom. That's why the drain lives there. Gravity does the work. When your boat sits nose-high on the trailer, every bit of rain, washdown water, and bilge seepage runs straight to that corner and out through this plug. Threaded for 1\/2-inch NPT, it matches the most common garboard opening on aluminum and fiberglass hulls, so it fits a huge range of bass boats, jon boats, runabouts, and center consoles.\u003c\/p\u003e\n\u003cp\u003eBrass is the right material here, and not by accident. Down at the waterline a drain fitting takes a beating. Standing water, salt, trailer grit, the occasional knock from a dock line or a boot heel. The machined brass body shrugs off corrosion far better than plated steel, and it won't swell or crack the way a cheap plastic plug does after a few seasons in the sun. It threads smoothly, seats tight, and backs out clean next spring.\u003c\/p\u003e\n\u003cp\u003eA quick word on thread size, because it trips people up. NPT stands for National Pipe Tapered, and the 1\/2-inch call-out refers to the nominal pipe size, not the diameter you measure across the threads. The external thread actually measures a bit larger than a half inch. If your existing drain takes a 1\/2-inch NPT plug, this one threads right in. If you're not sure, back out your old plug and match the thread. Most trailerable boats built in the last few decades use this exact size.\u003c\/p\u003e\n\u003cp\u003eInstalling it is a five-minute job. Wrap the male threads with a couple turns of Teflon tape or lay down a bead of marine thread sealant, then thread the plug in hand-tight and snug it with a wrench. Don't gorilla it. NPT threads seal on the taper, so a firm turn past hand-tight is plenty. Over-torquing brass into a transom fitting is how you crack a fitting or gall the threads.\u003c\/p\u003e\n\u003cp\u003eHere's the habit that saves boats. Pull the plug every time you pull the boat. Leave it out while the rig sits on the trailer or in storage so water drains and air moves through the bilge. That goes double over winter, when a sealed hull traps moisture and any water left inside can freeze and do real damage. Keep a spare in the glovebox too. A garboard plug is cheap. The tow-out when one vibrates loose at the ramp is not.\u003c\/p\u003e\n\u003cp\u003eRun it in salt or fresh, it doesn't care. Brass handles both. After a salt day, a quick freshwater rinse of the transom and the drain keeps everything moving freely, and a dab of waterproof grease on the threads once a season means the plug never seizes in the fitting. Small maintenance, long life.\u003c\/p\u003e\n\u003cp\u003eIf you're staring at a corroded, rounded-off, or missing plug, this is a straight replacement for the standard 1\/2-inch NPT garboard drain. First-time owner or lifelong angler, it's the same simple part, and getting it right means a dry bilge and no surprises at the launch. We keep these on the shelf because they're the kind of thing you always want one more of.\u003c\/p\u003e\n\u003cp\u003eThat's really the whole job. A good garboard plug seals when you want it sealed and drains when you want it drained, season after season, without you ever thinking about it. This brass plug does exactly that, and it's priced so you can grab two.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul class=\"nvn-features\"\u003e\n  \u003cli\u003eMachined brass body resists saltwater corrosion and won't crack or swell the way a plastic plug can\u003c\/li\u003e\n  \u003cli\u003e1\/2-inch NPT tapered thread matches the most common garboard drain opening on aluminum and fiberglass hulls\u003c\/li\u003e\n  \u003cli\u003eSeals on the thread taper for a tight, reliable fit with a bead of sealant or a few wraps of Teflon tape\u003c\/li\u003e\n  \u003cli\u003eThreads out clean for fast draining on the trailer or in winter storage\u003c\/li\u003e\n  \u003cli\u003eDirect replacement for a corroded, rounded-off, or missing 1\/2-inch NPT garboard plug\u003c\/li\u003e\n  \u003cli\u003eCompact brass construction stands up to salt, standing water, trailer grit, and years of sun\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cdiv class=\"nvn-trust\"\u003e\n  \u003ch2\u003eWhy Buy from NVN Marine\u003c\/h2\u003e\n  \u003cul\u003e\n    \u003cli\u003eAuthorized T-H Marine Supplies reseller, full manufacturer warranty\u003c\/li\u003e\n    \u003cli\u003eNMEA member and ABYC certified, advice from real boat techs\u003c\/li\u003e\n    \u003cli\u003eSame-day shipping before 3 PM ET on in-stock items\u003c\/li\u003e\n    \u003cli\u003eNY headquarters and Fort Lauderdale flagship retail store\u003c\/li\u003e\n  \u003c\/ul\u003e\n\u003c\/div\u003e\n\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003cdiv class=\"nvn-faq\"\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eWhat thread size is this garboard plug?\u003c\/summary\u003e\n    \u003cp\u003eIt uses a 1\/2-inch NPT (National Pipe Tapered) thread, the most common garboard drain size on trailerable boats. The external thread measures a bit larger than a half inch, because NPT sizing refers to nominal pipe size rather than the diameter you measure across the threads.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eWhat does a garboard drain plug actually do?\u003c\/summary\u003e\n    \u003cp\u003eIt seals the drain at the garboard, the lowest point where your hull bottom meets the transom. With the plug threaded in, the bilge stays sealed on the water. Pull it on the trailer and gravity drains the boat dry.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eIs brass better than a plastic or steel plug?\u003c\/summary\u003e\n    \u003cp\u003eFor a drain fitting that lives at the waterline, yes. The machined brass resists corrosion from salt and standing water far better than plated steel, and it won't swell, crack, or go brittle in the sun the way plastic can.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eHow do I install it?\u003c\/summary\u003e\n    \u003cp\u003eWrap the male threads with Teflon tape or add marine thread sealant, thread it in hand-tight, then snug it with a wrench. Don't over-torque it. NPT threads seal on the taper, so firm is plenty. Over-tightening can crack the fitting or gall the threads.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eCan I use it in saltwater?\u003c\/summary\u003e\n    \u003cp\u003eYes. Brass handles both salt and fresh. A freshwater rinse after salt trips and a little waterproof grease on the threads once a season keeps it from seizing in the fitting.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eWill it fit my boat?\u003c\/summary\u003e\n    \u003cp\u003eIf your boat uses a standard 1\/2-inch NPT garboard drain, this threads right in. That covers most trailerable bass boats, jon boats, runabouts, and center consoles. If you're unsure, back out your current plug and match the thread size.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eShould I leave the plug in or out during storage?\u003c\/summary\u003e\n    \u003cp\u003eOut. Pull it whenever the boat is on the trailer or in winter storage so water drains and the bilge can dry. Trapped water that freezes over winter can do real damage to a hull.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eDoes it come with a gasket or sealing washer?\u003c\/summary\u003e\n    \u003cp\u003eWe list this as the brass garboard plug itself. Plan on sealing the threads with Teflon tape or marine thread sealant when you install it, and it's smart to keep a spare plug on hand. It's cheap insurance against a loose plug at the ramp.\u003c\/p\u003e\n  \u003c\/details\u003e\n\u003c\/div\u003e\n\n\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\n\u003ctable class=\"nvn-specs\"\u003e\n  \u003ctbody\u003e\n    \u003ctr\u003e\n\u003cth\u003eTitle\u003c\/th\u003e\n\u003ctd\u003eGarboard Drain Plug, 1\/2-Inch NPT Threaded, Brass\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eBrand\u003c\/th\u003e\n\u003ctd\u003eT-H Marine\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eManufacturer\u003c\/th\u003e\n\u003ctd\u003eT-H Marine Supplies\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eManufacturer Part Number\u003c\/th\u003e\n\u003ctd\u003eBE-PL-54836-DP\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eUPC\u003c\/th\u003e\n\u003ctd\u003e733572185980\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eMaterial\u003c\/th\u003e\n\u003ctd\u003eBrass\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eThread Size\u003c\/th\u003e\n\u003ctd\u003e1\/2-Inch\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eThread Type\u003c\/th\u003e\n\u003ctd\u003eNPT (National Pipe Tapered)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eProduct Type\u003c\/th\u003e\n\u003ctd\u003eGarboard Drain Plug\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eMounting Location\u003c\/th\u003e\n\u003ctd\u003eGarboard (lowest point of transom)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eConstruction\u003c\/th\u003e\n\u003ctd\u003eMachined brass body\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eCorrosion Resistance\u003c\/th\u003e\n\u003ctd\u003eCorrosion-resistant for marine use\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003cscript type=\"application\/ld+json\"\u003e\n{\n    \"@context\": \"https:\/\/schema.org\",\n    \"@type\": \"FAQPage\",\n    \"mainEntity\": [\n        {\n            \"@type\": \"Question\",\n            \"name\": \"What thread size is this garboard plug?\",\n            \"acceptedAnswer\": {\n                \"@type\": \"Answer\",\n                \"text\": \"It uses a 1\/2-inch NPT (National Pipe Tapered) thread, the most common garboard drain size on trailerable boats. The external thread measures a bit larger than a half inch, because NPT sizing refers to nominal pipe size rather than the diameter you measure across the threads.\"\n            }\n        },\n        {\n            \"@type\": \"Question\",\n            \"name\": \"What does a garboard drain plug actually do?\",\n            \"acceptedAnswer\": {\n                \"@type\": \"Answer\",\n                \"text\": \"It seals the drain at the garboard, the lowest point where your hull bottom meets the transom. With the plug threaded in, the bilge stays sealed on the water. Pull it on the trailer and gravity drains the boat dry.\"\n            }\n        },\n        {\n            \"@type\": \"Question\",\n            \"name\": \"Is brass better than a plastic or steel plug?\",\n            \"acceptedAnswer\": {\n                \"@type\": \"Answer\",\n                \"text\": \"For a drain fitting that lives at the waterline, yes. The machined brass resists corrosion from salt and standing water far better than plated steel, and it won't swell, crack, or go brittle in the sun the way plastic can.\"\n            }\n        },\n        {\n            \"@type\": \"Question\",\n            \"name\": \"How do I install it?\",\n            \"acceptedAnswer\": {\n                \"@type\": \"Answer\",\n                \"text\": \"Wrap the male threads with Teflon tape or add marine thread sealant, thread it in hand-tight, then snug it with a wrench. Don't over-torque it. NPT threads seal on the taper, so firm is plenty. Over-tightening can crack the fitting or gall the threads.\"\n            }\n        },\n        {\n            \"@type\": \"Question\",\n            \"name\": \"Can I use it in saltwater?\",\n            \"acceptedAnswer\": {\n                \"@type\": \"Answer\",\n                \"text\": \"Yes. Brass handles both salt and fresh. A freshwater rinse after salt trips and a little waterproof grease on the threads once a season keeps it from seizing in the fitting.\"\n            }\n        },\n        {\n            \"@type\": \"Question\",\n            \"name\": \"Will it fit my boat?\",\n            \"acceptedAnswer\": {\n                \"@type\": \"Answer\",\n                \"text\": \"If your boat uses a standard 1\/2-inch NPT garboard drain, this threads right in. That covers most trailerable bass boats, jon boats, runabouts, and center consoles. If you're unsure, back out your current plug and match the thread size.\"\n            }\n        },\n        {\n            \"@type\": \"Question\",\n            \"name\": \"Should I leave the plug in or out during storage?\",\n            \"acceptedAnswer\": {\n                \"@type\": \"Answer\",\n                \"text\": \"Out. Pull it whenever the boat is on the trailer or in winter storage so water drains and the bilge can dry. Trapped water that freezes over winter can do real damage to a hull.\"\n            }\n        },\n        {\n            \"@type\": \"Question\",\n            \"name\": \"Does it come with a gasket or sealing washer?\",\n            \"acceptedAnswer\": {\n                \"@type\": \"Answer\",\n                \"text\": \"We list this as the brass garboard plug itself. Plan on sealing the threads with Teflon tape or marine thread sealant when you install it, and it's smart to keep a spare plug on hand. It's cheap insurance against a loose plug at the ramp.\"\n            }\n        }\n    ]\n}\n\u003c\/script\u003e\n","brand":"T-H Marine","offers":[{"title":"Default Title","offer_id":67599330803805,"sku":"2011170","price":7.79,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0299\/7266\/0317\/files\/ImageServerAPI_d0755fd2-d3ab-4cd6-97f5-b15a93376073.jpg?v=1790968895","url":"https:\/\/nvnmarine.com\/products\/t-h-marine-garboard-drain-plug-1-2-inch-npt-brass","provider":"NVN Marine","version":"1.0","type":"link"}