SW-Stahl 82251L Bedienungsanleitung Seite 7

The size of the rod or bolt is of great importance. lt must not be larger than the desired thread and
preferably 005" to .010" undersized. An oversized workpiece may demage the die and will make turning
very difficult. Slightly undersized workpieces are easier to thread and furnishes enough thread-height
for normal use.
After securing the part being threaded, insert the die into the die-stock and run the set screw snugly
into one of the recesses in the outside surface of the die. (The recess and slot pattern of dies allows
use with a variety of die stocks)
The chamfered side of the die is used for starting the threading operation. Always bevel the end of the
bolt or rod to be threaded, to make angles starting easier. This filed or ground chamfer also helps in
starting at right to the work, which is of major importance.
Start the die on the rod with clockwise rotation until it begins leading onto the workpiece. Metal-chips
will flow into the holes provided and should be broken by reversing the direction every 1/4 to 1/2 revo-
lution, depending on the tightness encountered.
Continue this operation until threads of the desired length have been cut. Provide proper lubrication
to the workpiece while cutting threads.
D R I L L- D I A M E T E R
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