Pogo Pin Probe Clip - 6 Pins with 2.54mm / 0.1 Pitch : ID 5433 : $10.95 : Adafruit Industries, Unique & fun DIY electronics and kits
Pogo connectors - FEINMETALL GmbH
2 Pcs Spring Loaded Connector Pogo Pin 5 Pin 2.54 mm Pitch Through Holes PCB Vertical with Flange Panel Mount Single Row Strip-2pcs Female: Amazon.com: Industrial & Scientific
Spring-Loaded Connectors/Pogo pins
Waterproof pogo pins connect in soaking environments
Through Hole Dual Inline Pogo Pin Header - 2x3 with 0.1" Spacing | The Pi Hut