Suppose you are looking for the SurLok Plus EMI series connectors by Amphenol but when you search for the base part number you get a number of different options with very similar part numbers. “What is the difference between all of these?” you might ask. There are only a few small differences in these part numbers.
The main difference is whether you are looking for the plug or receptacle. If the receptacle there are fewer variations, those being, with or without keyway, sealed or not, the color, and the key orientation. If the plug is what is being sought after there are a couple of extra variations, which are straight or right angle, cable size accepted and with or without backshell.
This information was taken from the manufacturer datasheet: IDS-96 SurLok Plus EMI Version.pdf (amphenol-industrial.com).
If there are any questions on this, please reply to this post and we will be happy to address them.