These 40 way female break away headers are 8mm tall (excluding solder pins) with a 0.1" (2.54mm) pitch and can be easily cut to size. These mate very well with our break away headers.
Please note: You will lose one pin with each cut.
Posted by Mike Nicholson on 14th Oct 2013
40 way header that can be cut to any size and much cheaper than the 10 Pin Stackable Header for Arduino and just as good.
Posted by Tony Goodhew on 16th Aug 2013
I use these all the time. I like to solder up my finished projects onto strip board and use M:M jump leads (PPCAB110C4M ) to connect them to Arduinos or other breakout boards. These headers allow you to build really neat project boards. Cutting the headers to the right length is very easy. Hold the strip in a vice and use a junior hacksaw to cut down the centre of one of the holes. Once separated tidy up the cut edges with a small file. You can use the headers vertically or the legs are long enough to be bent horizontally before you solder in place. These headers are not long enough to make good contact into breadboard or the Arduino connectors. If you need to do that use Stackable Headers such as PPPRT-11376.
Posted by George Weatherill on 10th Mar 2013
The pins are not long enough to reliably clip into breadboards or connectors on Arduinos. They are the ideal length for soldering into prototype shields.