supply of stiffener plate along with fasteners for front carrier plate of cbc as per rdso drawing no. rdso/cg/drg/24034, alt. 2. item nos. 1 to 5.stiffener plate along with fasteners for front carrier plate of cbc as per rdso drawing no. rdso/cg/drg/24034, alt. 2. item nos. 1 to 5.,stiffener plate along with fasteners for front carrier plate of cbc as per rdso drawing no. rdso/cg/d rg/24034, alt. 2. item nos. 1 to 5. note:- 1. stiffener plates shall be as per is:3885 part-2, grade-5 in annealed cond ition with hardness between 190-245 bhn. 2. 50% of stiffener plates shall have holes with pitch=100+-0.5mm and d istance from edge = 25+-1mm, while remaining 50% stiffener plates shall have holes with pitch=90+-0.5mm and di stance from edge=30+-01mm. 3. hex head bolt shall be of reputed make: unbrako, tvs, caparo, lps only. 3. th e firm should submit the nabl test report of the material specification at the time of supply [ warranty period: 30 months after the date of delivery ] ]