supply of stiffener plate along with fasteners for front carrier plate of cbcstiffener plate along with fasteners for front carrier plate of cbc,stiffener plate along with fasteners for front carrier plate of cbc as per rdso drawing no. r dso/cg/drg/24034, alt. 2. item nos. 1 to 5. note:- 1. stiffener plates shall be as per is:3885 part-2, grade -5 in annealed condition with hardness between 190-245 bhn. 2. 50% of stiffener plates shall have holes w ith pitch=100+-0.5mm and distance from edge = 25+-1mm, while remaining 50% stiffener plates shall ha ve holes with pitch=90+-0.5mm and distance from edge=30+-01mm. 3. hex head bolt shall be of reputed make: unbrako, tvs, caparo, except lps [ warranty period: 30 months after the date of delivery ] ]