Tube End Male Adapter Basic Material Metal Body Material 316 Stainless Steel Connection Type MNPT x A-LOK(r) Tube End Tube Size 1/4 In. Pipe Size 1/4 In. Compression Thread Size 7/16-20 Hex Size 9/16 In. Temp Range -425 Degrees to 1200 Degrees F Standards ASME-SA-479 TYPE 316-SS BS970 316-S31 DIN 4401 ASTM A276 Type 316