THRU-HULL CONNECTORS Forespar ® series of Thru-Hull Connectors are precision molded in high strength Marelon ®. Their great strength, light weight and complete freedom from corrosion and electrolysis make them the ideal Thru-Hull Connectors for use above or below the waterline. All Thru-Hull Connectors must be installed with proper bedding compound. We recommend a maximum torque setting of 20 lb/ft. for Series 250, Series 251 and Series 253 Thru-Hull Connectors. The ‘S’ notation in our model numbers (eg. CF 250S 1/2), indicates a Thru-Hull Connector that has been fitted with a screen. FULL THREADED/FLUSH HEAD Part No. Thread Size FULL THREADED/MUSHROOM HEAD HOSE TAILPIPE/MUSHROOM HEAD Thread Size FLUSH HEAD DRAIN Part No. Thread Size Thread & Hose I.D. _____ Length ‘S’ DENOTES SCREENED SERIES SIZE