1.1 mm Bicortical Negative End Thread Pin 70 mm Long [BCNET11]
Negative bicortical pins have had a bad reputation for early failure at the thread pin junction. Where selection of pin and frame are appropriate failure of negative threaded pins is rare. The important criterion is thread diameter not shaft diameter. For any given thread diameter both positive and negative threaded pins are equally strong. Virtually all human pins are negative threaded!