Original Apple single black T8 7.4mm screw for the Macintosh PowerBook G3 Lombard and Pismo ranges. Five of these screws secure the bottom case along with two 16mm screws, three secure the chassis to the bottom case, and two fix the top case on the Pismo only (one holding the LVDS cable). One secures the modem EMI filter Board to the chassis. One secures the front of the logic board to the bottom case. Two secure they eject assembly to the bottom case.