Jaycar 4-Pin 0.1in Header with Crimp Pins – 2.54mm Pitch PCB Connector

You're mid-build, the board's waiting, and you need a clean 4-way connection without hand-soldering four individual wires. This Jaycar HM3404 header slots onto your PCB and gives you a positive, polarised 4-pin join at 2.54mm pitch. Square tin-plated brass pins protrude 3.4mm for a solid solder joint. The white nylon wafer sits flat on the board, locks when mated, and won't let you plug it in backwards. Works end-to-end or at right angles — your call. Operating range is 0 to +75°C. One header, one clean connection, done

• 4-pin wafer header with square tin-plated brass crimp pins, 2.54mm (0.1in) pitch
• Pins protrude 3.4mm for reliable through-hole soldering; nylon wafer is 3.3mm thick
• UL 94V-0 rated white nylon housing; locking and polarising key on the back
• Mates boards end-to-end or at right angles; plugs butt together for any pin count from 2 up
• Normal mating force 200g min; rated 0 to +75°C