40 Series Socket, Panel Mount with Compression Fitting for 1/4 OD and 3/8 OD Tubing.
Available with or without a shut off. Compression Nut is Nickel-Plated Brass. Stainless Steel Latch and spring.
Used with a 0.688 Thru hole. Nickel Plated Brass Panel nut is a 13/16 Hex with 11/16-24 threads.