2 X 4 BLACK NIPPLE

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. 1/2"-28x1-1/2" 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.

Manufactured to Aerospace Standard 907.

Black oxide high-speed steel drill bits are a dependable, general purpose drill designed to perform in a broad range of materials in the iron and steel families..

Threads Conform With The American Standard Taper Pipe Thread & Resist Vibration.

Recommended Uses Include Copper, Brass, & Iron.