THE SINGLE BEST STRATEGY TO USE FOR TYPES OF SCREW HEADS

A smaller diameter, in addition to a greater profile, than spherical or pan heads, helps make the ‘fillister’ screw head effective for the further slot. likely essentially the most commonplace are Nos. one and a couple of, Though No. 0 will likely be wanted for many extremely compact screws and 3 and four for giant screws. (See The purpose / B