supply of plate screw, galvanized plate screw,as per rdso drg , plate screw for use with dowels conforming to rdso drg. no. t-3913 to irs specification no. irs-t16-2019. (the alteration in drawing, specifica tions and str issued by rdso up to one month prior to tender opening date shall be applicable to this tender.) [ warranty period: 30 months after the date of delivery ] ] , galvanized plate screw as per rdso drg. no. t-3911 and confirming to irs specification irs t-16-2019 with latest corrigendum issued up to 20 days prior to the date of closing of tender. [ warranty period: 30 months after the date of delivery ] ] , manufacturing & supply of galvanized plate screw 150 mm long having 24mm dia per rdso drg. no. t-3912 as amended up to date [ warrant y period: 30 months after the date of delivery ] ]