Screw Terminal Block Kit 5mm Pitch 2, 3, 4 Pole (40 pcs) by QSU

Great Quality - Works as needed.

work good

I wish I had purchased a much bigger collection. At this price point I can't say it was a great buy. No quality problems what-so-ever though.

Worked so well for connecting sensor leads to board

These are better suited for PCB type proto board like the one in the picture I posted. The pins are a bit too wide for a solderless, breadboard. I was able to coax them in to a breadboard project and they worked fine for me in that application.

Some reviewers have complained because the pins are too wide for solderless breadboards, thus damaging them. The specs say this width is 1.0 mm which could indeed damage a breadboard.The batch I got has 0.59 mm wide pins, according to my caliper, and this is safe for solderless breadboards. You can see this 0.59 mm width in the photo I attached with a ruler directly underneath the product.These terminal blocks would get five stars but I subtract one for the substantially inaccurate specs where they say 1.0 mm but it's really 0.59 mm.

The item delivered matches the technical drawing, not the photographs. This is generally fine, but I don't like that all of the terminal screws are pre-torqued, causing the contactor to be flexed under load unnecessarily. Pre-torquing would be the right choice with closures that move linearly like a clamp with screw torque, but not with these, where the screw applies force to a flexible piece of metal which is meant to squeeze against the housing.

The case is really nice to keep the different ones separate so it's easy to fund the one I need.