2.50mm pitch, 6-position, single-row header with latch holder
The 6-1971798-4: This is a TE Connectivity AMP Connectors Grace Inertia (GIC) series header, 6 positions in a single row on 2.50mm pitch. The shrouded 4-wall housing protects the square male pins, and the latch holder fastening type locks the mating receptacle in place — a solid choice for board-to-cable/wire connections where vibration could otherwise work the pair loose. The through-hole termination with kinked pins provides a secure solder joint on the PCB, and the board guide feature aids alignment during assembly. Rated for operation from -30°C to 105°C, this header suits general-purpose indoor and automotive cabin environments.
Mating and termination details
This header mates with the corresponding Grace Inertia receptacle housing (typically a 6-position, 2.50mm pitch female connector with latch-compatible features). The latch holder on the header engages with the receptacle's locking ramp, providing a positive retention that resists un-mating from cable strain or vibration. Termination is through-hole solder with kinked pins — the kinks provide a press-fit retention during wave soldering, holding the header in place before the solder solidifies.
Sourcing and compliance
The thermoplastic insulation is yellow, which aids visual identification in a harness.