tender for pad locks 65mm zinc plating, grade - i, ir stamped,[4 levers],steel ring fastened two single bittedround keys as per is: 15275/2003 shape 3 rd of fig -2 along with the components as follows: - 1]body: steelsheet as per is: 513 2]spring: spring steel wire as per is: 4454 [any grade] 3]shackle: bright bar as per is: 95504]key: steel sheet as per is: 513 5]levers: brass sheet as per is: 410 alloy cu zn 40. 6]rivets: mild steel wireas per is: 280 .