Round Dies are chamfered on both faces. Adjustment is obtained by a fine pitch screw which forces the sides of the die apart, or allows them to spring together.For threading, a High Speed Steel Round Adjustable Die is desired for improved wear life. m48x4 3" OD HSS Round Adjustable Die Special The slot is beveled so that when the dies are used in a machine holder the adjusting screw can be removed and adjustment made by the adjusting screws in the holder.
. Ideal for portable or machine drilling. #36 HSS Left Hand Split Point Stub Drill Bit Screw machine drills (also know as stub or stubby drills) are manufactured to National Aerospace Standard 907.
When drilling low tensile strength materials, the Type inDin cobalt drill will have a significantly greater tool life than the NAS 965 Type B high speed steel adapter drill, resulting in a much lower cost per hole.