These 316 stainless steel nuts (and ferrules) are rated to 20,000 psi (1380 bar) when tightened using a wrench. Recommended torque for tightening these fittings is 20 in-lbs. (2.25 N-m).

Metal fittings should not be used with plastic ports because they can damage the ports.

Pressure rating of nut depends on ferrule used.