The HIROSE DF60 series In-line plug version ( “EP” Connector Type in the part number) needs two M3 nuts for mounting.
Hirose’s datasheet and operating instructions for the part can be found here: DF60-series Catalog.
Hirose has confirmed that this part does not include M3 nuts, nor do they sell the nuts separately. You have to purchase them from a third party. Any M3 nut and screw should suffice, with the only concern being the length of the screw not exceeding the length of the panel by a significant margin. Here’s an example from the 2D drawing for reference:
Applicable Part Numbers
| DK Part # | Mfr Part # |
|---|---|
| H122152-ND | DF60-2EP-10.16C |
| 26-DF60FR-3EP-10.16C-ND | DF60FR-3EP-10.16C |
| H122153-ND | DF60-3EP-10.16C |
| H122154-ND | DF60-4EP-10.16C |
| 26-DF60A-4EP-10.16C-ND | DF60A-4EP-10.16C |
| 26-DF60F-3EP-10.16C-ND | DF60F-3EP-10.16C |
| H122155-ND | DF60-5EP-10.16C |