The TecNec 38B Flat Head Screws with Nut & Washers Kit from B&H features a black 100-pack of TecNec 3/8" flat head (countersunk) screws and a stainless steel 100-pack of 4-40 nuts with star washers. The kit can be used for mounting all chassis connectors in panels and plates. In addition, use flat head (countersunk) screws for front-panel mounting.
These SCREW-38B 4-40 x 3/8" Flat Head Screws from TecNec are for mounting chassis-mount connectors on panels and plates. They feature a countersunk head design, ideal for mounting connectors on the front of panels.
The NUT-CMT from TecNec comprises a pack of 100 4-40 thread hardware nuts with their included star washers. These can be used for mounting compatible-sized chassis connectors in panels and plates.