supply of m.s bolts for sej 25mm t-2659 boltsm.s bolts for sej 25mm t-2659 bolts,m.s bolts for sej 25mm t-2659 bolts (as per annexure) along with associate fittings i.e., one nut and one plain washer 8mm thick. [ warranty period: 30 months after the date of delivery ] ] , m.s bolts for sej 25mm t-2660 manufacture and supply of various types of bolts (as per annexure) along with associate fittings i.e., one nut and one plain washer 8mm thick. [ warranty peri od: 30 months after the date of delivery ] ] , manufacturing and supply of fish bolts and nuts of size 25 x 160 mm to rdso drg no. t- 11511 alt. 2 or 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 o f delivery ] ] , manufacturing and supply of fish bolts and nuts of size 25 x 180 mm to rdso drg no. t- 11513 alt. 2 or 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 o f delivery ] ]