supply of fish bolts and nuts 140x25 mmfish bolts and nuts 140x25 mm,fish bolts and nuts 140x25 mm (60 kg rail) to rdso drawing no. t1899 as per irs specifications irs t 23-67 with corrigendum number 5 of o ctober 1987 to specification no. t-23 with latest alterations and amendment if any up to date.] [ warranty period: 30 months after the date of delivery ] ] , fish bolts and nuts 140x25 mm (60 kg rail) to rdso drawing no. t1899 as per irs specifications irs t 23-67 with corrigendum number 5 of o ctober 1987 to specification no. t-23 with latest alterations and amendment if any up to date.] [ warranty period: 30 months after the date of delivery ] ] , fish bolts and nuts 140x25 mm (60 kg rail) to rdso drawing no. t1899 as per irs specifications irs t 23-67 with corrigendum number 5 of o ctober 1987 to specification no. t-23 with latest alterations and amendment if any up to date.] [ warranty period: 30 months after the date of delivery ] ] , fish bolts and nuts 140x25 mm (60 kg rail) to rdso drawing no. t1899 as per irs specifications irs t 23-67 with corrigendum number 5 of o ctober 1987 to specification no. t-23 with latest alterations and amendment if any up to date.] [ warranty period: 30 months after the date of delivery ] ]