supply of manufacturing and supply of fish bolts , manufacturing and supply of fish bolts and nuts of size 25 x 380 mm to rdso drg no. t- 11533 with latest alterations if any, use for points & crossing, confirming to irs specifications serial no. t-23: 2021 (redrafted) or latest amendment if any. [ warranty period: 30 months after the date of d elivery ] ] , manufacturing and supply of fish bolts and nuts of size 25 x 300 mm to rdso drg no. t- 11525 with latest alterations if any, use for points & crossing, confirming to irs specifications serial no. t-23: 2021 (redrafted) or latest amendment if any. [ warranty period: 30 months after the date of d elivery ] ] , manufacturing and supply of fish bolts and nuts of size 25 x 310 mm to rdso drg no. t- 11526 with latest alterations if any, use for points & crossing, confirming to irs specifications serial no. t-23: 2021 (redrafted) or latest amendment if any. [ warranty period: 30 months after the date of d elivery ] ] , manufacturing and supply of fish bolts and nuts of size 25 x 280 mm to rdso drg no. t- 11523 with latest alterations if any, use for points & crossing, confirming to irs specifications serial no. t-23: 2021 (redrafted) or latest amendment if any. [ warranty period: 30 months after the date of d elivery ] ] , manufacturing and supply of fish bolts and nuts of size 25 x 260 mm to rdso drg no. t- 11521 with latest alterations if any, use for points & crossing, confirming to irs specifications serial no. t-23: 2021 (redrafted) or latest amendment if any. [ warranty period: 30 months after the date of d elivery ] ]