supply of procurement of m20 bolt length 85 mm with one hex nut, one castle nut and one split pin etc.procurement of m20 bolt length 85 mm with one hex nut, one castle nut and one split pin etc.,m20 bolt length 85 mm with one hex nut, one castle nut and one split pin, as per is: 1364 ( part-1)grade a for m 20 bolt, is:1364 (part-3) grade b for hex head nut, is:549/2005 for split pin, is:9549/1 980 for hole of nut and is: 2232:1967 grade - precision (p) as the bolt is of grade a for castle nut, drg no. rites/tp-9405-s-001 alt 9 or latest item no. 12, specification as per annexure attached. [ warranty peri od: 30 months after the date of delivery ] ]