Standard Union Polypropylene 1/4-28 Back Catalog number: P-620 Availability: In the manufacturer's stock Price on request - + Recommended JR-ZF1S6-5 Ferrule, SS, 1/16"; Valco type, 5/pkg Price on request MZN1-10 Nut 1/16, 13mm long, SS, 10/PAK Price on request P-704 Union Assembly, ZDV, PEEK, 0.020" ID, 1/16" OD Tubing, 10-32 Coned Price on request