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 Round Dies are chamfered on both faces. 3/8"-40x2" OD HSS Round Adjustable Die Special For threading, a High Speed Steel Round Adjustable Die is desired for improved wear life.. Adjustment is obtained by a fine pitch screw which forces the sides of the die apart, or allows them to spring together.
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 Round Dies are chamfered on both faces.
The 135 degree split point is self-centering and reduces thrust.Sizes smaller than 1/16 and #52 have the 118 degree standard point. #18x12" HSS Aircraft Extension Drill Bit Manufactured to Aerospace Standard 907..
. #18x12" HSS Aircraft Extension Drill Bit Manufactured to Aerospace Standard 907. The 135 degree split point is self-centering and reduces thrust. They have a black oxide surface treatment that is abrasion resistant, reduces chip welding and improves chip flow.