{"product_id":"qbp352929","title":"Perko 0350 Thru-Hull Connection, Plain Bronze, Hose Barb, Above Waterline","description":"\u003ch6\u003eOverview\u003c\/h6\u003e\u003cp\u003eThe Perko Thru-Hull Connection for use with Hose is a plain bronze thru-hull fitting for routing hose discharge through the hull on above-waterline installations. The range shown here covers hose sizes from 5\/8 inch to 1-1\/2 inch, with mounting hole diameters from 13\/16 inch to 1-7\/8 inch and maximum hull thickness ratings from 1-1\/16 inch to 1-7\/8 inch, depending on the selected size.\u003c\/p\u003e\u003cp\u003eEach fitting is made from cast bronze with a plain finish. The flange is machined to sit tightly against the hull and includes a bedding groove to help retain sealant during installation. The neck is threaded to approximately 3\/16 inch from the flange, which helps with nut engagement while leaving room for the flange and bedding compound to seat properly.\u003c\/p\u003e\u003cp\u003eThis fitting is not recommended for use below the waterline. It suits above-waterline hose outlets such as cockpit drains, sink drains, livewell or baitwell overflows, and similar discharge points where the hose size, hull thickness, and mounting hole can be matched before drilling.\u003c\/p\u003e\u003ch6\u003eKey features\u003c\/h6\u003e\u003cul\u003e\n\u003cli\u003ePlain cast bronze construction for marine plumbing applications where bronze hardware is preferred.\u003c\/li\u003e\n\u003cli\u003eMachined flange with a bedding groove to help hold sealant at the hull surface during installation.\u003c\/li\u003e\n\u003cli\u003eThreaded neck extends to approximately 3\/16 inch from the flange for secure nut installation.\u003c\/li\u003e\n\u003cli\u003eAvailable in hose sizes from 5\/8 inch through 1-1\/2 inch in the listed configurations.\u003c\/li\u003e\n\u003cli\u003eMounting hole and maximum hull thickness vary by size, making fit confirmation important before replacing an existing thru-hull.\u003c\/li\u003e\n\u003cli\u003eIntended for above-waterline hose connections and not recommended for below-waterline use.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch6\u003eVariants\u003c\/h6\u003e\u003cp\u003eThis Perko thru-hull connection is offered in several hose-size configurations. Across the listed plain bronze variants, the main differences are hose size, mounting hole diameter, maximum hull thickness, and flange outside diameter.\u003c\/p\u003e\u003cp\u003eThe smaller sizes suit lighter hose runs and tighter locations, while the larger sizes allow higher-capacity drains or discharge lines where the boat already uses a matching hose and hull opening. Before ordering, match the hose inside diameter, check the drilled hole requirement, and confirm that the hull thickness at the mounting point stays within the listed limit for that configuration.\u003c\/p\u003e\u003ch6\u003eInstallation and fit\u003c\/h6\u003e\u003cp\u003eFit should be checked from both sides of the hull before installation. The hose size must match the plumbing run, the mounting hole must match the selected fitting, and the hull thickness must not exceed the rating for that variant. The flange seats on the exterior surface, so the surrounding hull area should be fair enough for sealant to compress evenly.\u003c\/p\u003e\u003cp\u003eBecause the flange includes a bedding groove, sealant can remain concentrated where the fitting meets the hull. As with any thru-hull work, the hole edge, bedding surface, backing area, nut, and hose clamp access should all be planned before final assembly.\u003c\/p\u003e\u003ch6\u003eUse cases on board\u003c\/h6\u003e\u003cp\u003eThis fitting is a practical match for boat owners replacing an existing above-waterline bronze thru-hull or laying out a new hose discharge where plain bronze hardware is specified. It is especially relevant on fishing boats, cruisers, and sailboats with drain or overflow plumbing that exits through the topsides or transom above the static waterline.\u003c\/p\u003e\u003ch6\u003eMaintenance and care\u003c\/h6\u003e\u003cp\u003eInspect the fitting as part of regular hull and plumbing checks, especially around the flange, bedding compound, hose connection, and retaining nut. Look for movement, staining, cracked sealant, hose wear, or clamp corrosion, and address any issue before the boat returns to service.\u003c\/p\u003e","brand":"Perko","offers":[{"title":"5\/8 \/ 13\/16 \/ 1-1\/16","offer_id":52581921718453,"sku":"QBP352929-V1","price":62.46,"currency_code":"USD","in_stock":true},{"title":"3\/4 \/ 1 \/ 1-5\/8","offer_id":52581921751221,"sku":"QBP352929-V2","price":67.77,"currency_code":"USD","in_stock":true},{"title":"1 \/ 1-5\/16 \/ 1-3\/4","offer_id":52581921783989,"sku":"QBP352929-V3","price":88.08,"currency_code":"USD","in_stock":true},{"title":"1-1\/8 \/ 1-5\/16 \/ 1-3\/4","offer_id":52581921816757,"sku":"QBP352929-V4","price":88.08,"currency_code":"USD","in_stock":false},{"title":"1-1\/4 \/ 1-5\/8 \/ 1-7\/8","offer_id":52581921849525,"sku":"QBP352929-V5","price":133.88,"currency_code":"USD","in_stock":true},{"title":"1-1\/2 \/ 1-7\/8 \/ 1-7\/8","offer_id":52581921882293,"sku":"QBP352929-V6","price":86.69,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0977\/8171\/1029\/files\/1334637_qbp352929.webp?v=1780201570","url":"https:\/\/www.qualityboatparts.com\/products\/qbp352929","provider":"Quality Boat Parts","version":"1.0","type":"link"}