MIDLAND INDUSTRIES 20221 Hex Nut, 5/16 in Flareless, Brass
MIDLAND INDUSTRIES Hex Nut, Connection Size: 5/16 in, Connection Type: Flareless, Brass, 0.34 in L, 1/2 in Hex, For Use With: Aluminum, Copper Tubing, Hard Plastic Tubing with Brass Sleeve, 300 psi, -65 to 250 deg F, Additional Information: Poly-Flo, 7/16-24 Thread Size, 0.049 in Tube Wall, 0.020 lb Weight