It has machined and tapered pipe threads to ensure a watertight plug fit, and the nut can be removed with a wrench or pliers. Find many geat new & used options and get the best deals fo 2xValve Stem Seal fo Honda Big uckus 250 PS250 2005-2006 at the best online pices at eBay! Fee shipping fo many poducts Fit: Machined and tapered pipe threads for watertight fit Diameter: 1/2 inch one-piece plug Attwood Garboard Drain Plug Cast Bronze ; Neck Depth, 3/8-inch ; Drain Size, ½-inch NPT ; Installation Screws, #8 screws, 3 countersunk holes ; Material, Cast... Attwood Bilge Pump Boating Accessories New Garboard Drain Plug Bronze Large Flange Sea Ray Boat SCP 18751 Boat Plug This drain plug has a 3/8-inch neck depth and a ½-inch NOT drain. Boating Accessories New Garboard Drain Plug Removal: Nut can be removed with wrench or pliers Neck depth: 3/8 inch Attwood Corporation has been an award-winning leader in engineering, testing, and manufacturing the highest quality marine products for over 100 years. We deliver safe and reliable lighting, fuel systems, water systems, seating & pedestals, swim ladders, custom upholstery, and general marine accessories that are easy to install and meet regulatory compliance. It installs easily and securely using #8 screws in 3 countersunk holes.