"HEX HEAD SIZE 0.312; ITEM DESIGNED FOR SILICON, E.P.D.M. AND OTHER SOFT HOSE; THE INNER BAND IS AN INTEGRAL EXTENSION OF THE WIDE BAND TO CREATE A SMOOTH INNER SURFACE THAT PREVENTS EXTRUSION OF SOFT HOSE THROUGH THE SLOTS; RATED ULTIMATE TORQUE:CARBON/400SS SCREW 50 IN.LBS.MINIMUM(5.6NM); 30 SS SCREW 60 IN.LBS. MINIMUM(6.8NM); RECOMMENDED INSTALLATION TORQUE 30-40 ON.LBS.(3.4-4.5NM)."