Home Plumbing Pipe Fittings TH Series Thru-Hull Connector with Nut (Thread NPS 2-1/2”) Groco TH Series Thru-Hull Connector with Nut (Thread NPS 2-1/2”) $199.39 TH Series Thru-Hull Connector with Nut (Thread NPS 2-1/2”) quantity Add to cart Product Details Product Details Thread NPS: 2-1/2″. Flange OD: 4.40″. Max Hull Thickness: 3.56″. NPSM / NPT combination thread. C83600 Bronze. Includes nut. UL LIsted 647B.
