supply of end flange / triangular head block / camlock coupling adapterend flange / triangular head block / camlock coupling adapter,end flange for modification in btpn wagon as per rdso drg. no. wd-btpn-3.1 (rev.-2) (apr.-2025) or latest alt. item no. 1 [ warranty period: 30 months after the date of delivery ] ] , camlock coupling adapter with male thread for modification in btpn wagon as per rdso drg. no. wd-bt pn-3.1 (rev.-2) (apr.-2025) or latest alt. item no. 3 [ warranty period: 30 months after the date of delivery ] ] , triangular head (19.5x19.5x19.5) m-16x60 bolt as per drg. no. wd-btpn-2-alt.-1 (rev.-3) may-25, item no. 9, ma terial- is:1363 part-1 [ warranty period: 30 months after the date of delivery ] ] , triangular head block (custom made) (45x45x45) as per drg. no. wd-btpn-3.1- alt.-2(rev.-2) may-25, item no. 5, material- is:2062 e250a cu [ warranty period: 30 months after the date of delivery ] ]