What this 3-position header fits
The 440052-3 is a single-row, 3-position header from TE's High Performance Interconnect (HPI) series, pitched at 0.098" (2.50mm) — a common spacing for wire-to-board harnesses using crimp housings. The 3-wall shrouding and friction lock mean it mates with a complementary receptacle that clicks home, resisting vibration back-out — you should hear it lock.
Termination and mounting options
Termination is listed as both press-fit and solder — the through-hole posts (0.134" / 3.40mm long) can be wave-soldered or pressed into a plated hole, giving assembly flexibility. The insulation height of 0.236" (6.00mm) and overall contact length of 0.335" (8.51mm) define the mated stack height — confirm the receptacle's mating depth against this dimension.