DETAILED NOTES ON TYPES OF SCREW HEADS

also referred to as Phillips sq. travel heads, quadrex types of screw heads combine square recesses and Phillips. prior to we Check out the several types of screws, Allow’s find out a tiny bit regarding the screw. Early screws were made by hand, so were being high-priced. Screws are cylindrical fasteners with a number of uses. All screws Use a t