Set Of Nickel Plated Brass Pg Thread Plug Screw With Gasket And Lock Nut. One Set Consists Of (1) Nickel Plated Brass Pg Metal Thread Plug Screw Size Pg-29 With Lock Nut Conforming To Rdso Specification Rdso/Pe/Spec/Ac/0138-2009, Rev-1 Annexure-A, Table A-18, Sl. No. 6, Qty. 1200 Nos.. (2) Nickel Plated Brass Pg Thread Plug Screw Size Pg-21 With Gasket And Lock Nut Conforming To Rdso Specification Rdso/Pe/Spec/Ac/0138-2009, Rev-1 Annexure-A, Tabl E A-18, Sl. No.5, Qty. 1200 Nos. [ Warranty Period: 30 Months After The Date Of Delivery ] ]