Galvanized Hex.Head Screw M 12 X 30 - 4.6 With Spring Washer. Icf Drg.No. Icf/T-0-7-607 Item- 8 & 9 Alt L/17 Spec.N O. 1363 (Part 02/84) Table 1& 2 And Is:3063 Table 1A Type B Material To Is:4072 Gr.3 Confirming To Galvanising To Spec. Is: 1573 - 86 T O Service Grade No. 2 Of Tab. 2. [ Warranty Period: 30 Months After The Date Of Delivery ] ]