Compression Nut Application Air Natural Gas Non-Potable Water Potable Water Propane Steam Fitting Material Stainless Steel Material Grade 316 Maximum Operating Temperature 1 500 Degrees F Overall Length 11 29/32 mm Thread Size 3/8-20 Specific Fitting Shape Nut System of Measurement Metric Compatible Tube Outer Diameter 4 mm Compatible Fitting Brands Swagelok Standards ASME ATM CPE ISO1550 DNV ISO9001 LLOYDS SAE Color Silver Compatible Tube Material Stainless Steel