supply of stiffener plate along with fasteners , 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, gra de-5 in annealed condition with hardness between 190-245 bhn. (2). 50% of stiffener plates shall have hol es with pitch=100+-0.5mm and distance from edge = 25+-1mm, while remaining 50% stiffener plates shal l have holes with pitch=90+-0.5mm and distance from edge=30+-01mm. (3). hex head bolt shall be of re puted make: unbrako, tvs, tuff, caparo, sterling, except lps. [ warranty period: 30 months after t he date of delivery ] [quantity tolerance (+/-): 5 %age , item category : normal , total po value variation permitted: max 8 lacs ] ]