XINFENG SCREWS

At present, twinthread wood screws countersunk pozi drive and twinthread wood screws double countersunk pozi drive are available .

Wood screws area kind of a metal screw formed with a sharp thread, and Wood screws usually with a slotted head, for insertion in wood.

Wood screws have a smooth shank that allows the screw to pull the two pieces of wood together for a tight joint. Wood screws also taper along the threaded portion optimizing the screws holding power in wood. This is why some people use special tapered drill bits for pilot holes.

Improved wood screws are self-drilling. The wood screws have a first spiral flute that extends essentially the full length of the screw. Wood screws also have a second spiral flute which begins at the point of the wood screw and which terminates a short distance from the point.