The GP-2TL is the long-body, threaded-tip guide pin in the GP-2 family, used to locate a PCB in a FixturFab test fixture through the board's tooling holes. The pin holds the DUT in X and Y so that probe travel and landing position stay repeatable across a production run.
This is the 800 g spring variant — the stiffer of the two. The heavier spring holds the board up more firmly between cycles and resists being pushed down by an operator's hand or by probe counter-force, which is what you want on a larger or heavier DUT; the 350 g version is the gentler choice for thin, flexible boards. The threaded tip lets a worn or differently sized head be swapped without pulling the pin, and the long body suits taller cartridge stack-ups.
Threaded tip, long body
800 g spring
GP-2 guide-pin family; also available with a 350 g spring
