solder pins for stripboard to breadboard
The pins shown below are known, not totally surprisingly, as test pins.
 Also pogo pins and no doubt many other names. 

You can mount a collection of suitably sized  ones on a test jig and press it against the board to test. (For vast production volumes these may be used in a latch in place test unit but you can often hold them in place by handdepending on what testing is required. 

They are spring loaded so will take up differences in tolerance. They slide into sockets of their own - you solder the socket in place and can then exchange the testpins as required.

Test pin from here - many more at this link.



These are from here