Features This GRAINGER APPROVED hex plug is 316 stainless steel construction with a higher nickel content for better corrosion resistance. Compatible with stainless steel Schedule 40 pipe For use with air, water, oil, natural gas, and steam Nominal Pipe Size / 1/4 in Pipe Fitting Material / 316L Stainless Steel, Stainless Steel Material Grade / 316L Class / Class 150 For Pipe Schedule / 40 Fitting Connection Type / Male NPT Outside Diameter / 1/4 in Overall Length / 23 mm Maximum Operating Pressure / 300 psi Max. Steam Pressure / 150 psi Temp. Range / -20 Degrees to 350 Degrees F Plug Drive Style / 3 in Hex Includes Pre-Applied Thread Sealant / No Includes Seal / No Fitting Side A Pipe Threading / 18 Magnetic / No Standards / ASTM A351