Lined clamps are designed for use with silicone rubber and other soft hose applications. The liner protects the hose surface and prevents it from extruding or shearing through the band notches as the clamp is tightened. Screw: 5/16″ Hex Head; Plated Carbon Steel. Housing: 200 Stainless. Band: 1/2″; 200 Stainless. Installation Torque: 35 in-lbs (4 Nm).