Supply of Nickel Plated Brass Pg Thread Plug Screw Pg-21, With Lock Nut Table A-18, S. No .5 To Rdso/Pe/Spec/Ac/0138-2009, Rev-1. Warranty Period: 30 Months After The Date Of Delivery Nickel Plated Brass Pg Thread Plug Screw Pg-16 With Lock Nut, Table A-18, S.No. 4 To Rdso/Pe/Spec/Ac/0138-2009, Rev-1. Warranty Period: 30 Months After The Date Of Delivery