Bulkhead Union Basic Material Metal Body Material 316 Stainless Steel Connection Type LET-LOK(r) x LET-LOK(r) Tube Size 6mm Max Pressure 4100 to 10 300 psi Hex Size 16mm Temp Range -425 Degrees to 1200 Degrees F Standards SAE ASTMA ASME MIL-F-18866 CE