Latch series The circular movement of the handle is transformed in linear action of the latch. These clamps are mostly used to fasten hinged lids and for containers. Holding capacities from 160 to 700 daN., and from 1700 to 4000 daN. for heavy series. The hook can be set within the adjustment range (quote D). The main feature of different models are as follow: For T - TF - T2 models: the bearing surface is parallel as to the line of action to the force; when closed, the control lever is parallel to the bearing surface. For T3 models: the bearing surface is perpendicular as to the line of action force; when closed, the control lever is parallel as to the bearing surface. For T4 models: the bearing surface is perpendicular to the line of action of the force; when closed, the control lever is perpendicular as to bearing surface. Specifications light series: cimponents in UNI 5867 case-hardening sheet steel; UNI 7230-73 hook; finishing: galvanized. heavy series: main unit and coupling square, heat-pressed UNI 7063 steel chemi black finished; control lever head pressed UNI 7063 steel chemi-black finished; hook and supporting pivots UNI 7230-73 steel galvanized.