Tenders for Supply of Cadmium Plated Slotted Pan Head Tapping Screw With Thread Size St-4.8, Nominal Length 9.5 Mm And Type-F, Conforming To Is:7173-1989 / Iso-1481:1983 1St Revision.. Cadmium Plated Slotted Pan Head Tapping Screw With Thread Size St-4.8, Nominal Length 9.5 Mm And Type-F, Conforming To Is:7173-1989 / Iso-1481:1983 1St Revision. Warranty Period: 30 Months After T He Date Of Delivery