Check the listing for details. GRAINGER APPROVED 5P688 Black Pipe Nipple,Threaded,1x3-1/2 In 5P688. Condition: New. Listed at 7.30 USD. Nipple, Application Air, Natural Gas, Non-Potable Water, Oil, Steam, Finish/Coating Black, Fitting Compatibility Schedule 40, Manufacture Location Globally Sourced, Material Steel, Maximum Operating Pressure 300 psi @ 150 Degrees F, Maximum Steam Pressure 150 psi @ 350 Degrees F, Metal Pipe Construction Welded, Nominal Pipe Size 1 in, Outside Diameter 1 5/16 in, Overall Length 3 1/2 in, Pipe Weld Type Electric Resistance Weld, Schedule Schedule 40, Side A Connection Type Threaded This Grainger Approved nipple has a weld bead on the inside and is NPT threaded at both ends. Model is interchangeable with black cast iron or steel and is suitable for low-pressure plumbing applications including air, water, oil, natural gas, and steam. Certified for use in potable water applications.