supply of 1)swing door bolt for bcna wagons 2)compreg packing of size 1 2 0 m m1)swing door bolt for bcna wagons 2)compreg packing of size 1 2 0 m m,compreg packing of size 1 2 0 m m [a-length],90 m m [ b - distance between hole c entres],40 mm.[c- height]. confirming to rdso specification c-9407[rev.03] to drg.no. wd-8000 7-s-20,item no.12 alt-17. [ warranty period: 30 months after the date of delivery ] ] , swing door bolt for bcna wagons as per drg. no. wd-90030-s-66 alt-10 item no. 18 (without assembled condition, bracket for swing door bolt required in loose condition ) [ warranty peri od: 30 months after the date of delivery ] ]