Plug 1/2 in Nominal Pipe Size Iron Galvanized BS EN 1562 Class Class 150 For Pipe Schedule 40 MBSPT 1/2 in Outside Diameter 7/8 in Overall Length 150 psi Maximum Operating Pressure 290 psi Max Steam Pressure -5 Degrees F to 570 Degrees F Plug Construction Solid Plug Drive Style 9/16 in Square Includes Pre-Applied Thread Sealant No Includes Seal No 14 1/2-14 Magnetic No Silver