The Hirose HR10-7R-4P(73) is a 4-position male pin receptacle from the HR10 series, a compact push-pull circular connector line used in industrial and medical equipment where a quick, secure mate is needed without threads. The push-pull locking mechanism engages with an audible click and releases by pulling the collar — no twisting, which saves time on repeated connects in test or field-service setups.
Panel-Mount Installation and Mating Half
This receptacle mounts through a panel from the rear side, secured with a nut — the shell size is 7, so the panel cutout is specific to that insert size. The termination is solder cup, meaning you tin the wire and solder it directly into the cup on each pin; no crimp tool needed, which is handy for field repairs or low-volume builds. The mating half is the HR10-7P-4P(73) plug (male pins on the cable side) or the HR10-7R-4S(73) female socket receptacle if you need a bulkhead-to-bulkhead link. Keyed orientation ensures the connector only mates one way, preventing pin damage.
What the 2 A and 150VAC Ratings Mean for Your Circuit
How the 4-Position Compares to the 6-Position Sibling
The HR10-7R-6P(73) is the 6-position version of the same receptacle — same shell size 7, same push-pull locking, same 2 A and gold plating. The difference is two extra circuits in the same shell, which means the contact density is higher and the pin-to-pin spacing is tighter. If your BOM calls for 4 circuits, the 4P is the correct fit; if you need 6 circuits, the 6P uses the same panel cutout and mating plug family, so swapping between them is straightforward as long as the cable bundle fits the shell.