supply of procurement of brake cylinder safety chain with 02nos etc. , brake cylinder safety chain with 02nos. clamps and 02nos. nut bolts for so na blw mbs brake cylinder (11 dia) thickness=8mm, curved length of large bracket=26 4mm, dia of chain link=10 mm, fixed chain link to bracket welded=46mm, curve length of small bracket=180mm, total length of free links of chain=480mm, total nos. of free links of chain=12, gap between hole centers=50mm, dia of hole=16mm, fixed links (welded to brackets) at the both ends of chain.total length of nut bolts=100mm, dia of bolt=16mm, length of threaded portion=40mm. test certificate the manufacturer s hall supply a certificate of test and examination carried out by govt. owned lab or na bl approved labs with every supply of chain.supply as per sketch attached. [ warranty p eriod: 30 months after the date of delivery ] [quantity tolerance (+/-): 5 %age , item category : normal , total po value variation permitt ed: max 8 lacs ] ]