Temp. range: -425° to 1200°F- Machined to an exceptional tolerance level with rolled threads for increased strength. - 316 stainless steel has a higher nickel content, as well as molybdenum for better corrosion resistance. NPT connections. - Use with water, steam, natural gas, hydraulic oil, and cryogenic gases.- Meet ANSI B31.1, ANSI B31.3, and ANSI B1.20.1. Pipe Fitting Material / 316 Stainless Steel, Stainless Steel Material Grade / 316 Fitting Side A Nominal Pipe Size / 3/4 in Fitting Side A Gender / Female Fitting Side A Type / NPT Fitting Side B Nominal Pipe Size / 3/8 in Fitting Side B Gender / Male Fitting Side B Type / NPT Maximum Operating Pressure / 4,300 psi Overall Length / 1 3/4 in Hex Size / 1 3/8 in Color / Silver Application / Air, Natural Gas, Oil Standards / ANSI B1.20.1, ANSI B31.1, ANSI B31.3