Connectronics 4-40 x 1/2 Flat Head (Countersunk) Screws for Chassis Mount Connectors - 100 Pack - Black SCREW-F12B
4-40 thread hardware for mounting all chassis connectors in panels & plates. Box of 100 screws. Order nuts and washers separately (NUT-CMT). Use counter sunk screws for mounting connectors on front of panel.