supply of hexagonal head bolts and nuts assembled size: 16 x 65 mm (1) product grad e c,ms black to is: 1363/(part-1)/2002, property class 4.6 for bolt (2) product grade c,ms b lack to is: 1363(part-3)-2002 property class 5 for nut. [ warranty period: 30 months after th e date of delivery ] [quantity tolerance (+/-): 5 %age , item category : normal , total po value variation permitt ed: max 8 lacs ] ] amm/box-n/nh, er