Page 632 - Master Catalog 2017, Inch

™
TopThread
Threading Selection Guide

Step 1 • Select Threading Method and Hand of Tooling

Required Information:
• External/internal operation. L R L R L R
• Spindle rotation/hand of thread.
• Feed direction. hand of thread hand of toolholder hand of insert

Feed direction toward the chuck • RECOMMENDED
L R R L
L R
L
L

R
R L R

external left-hand thread external right-hand thread internal left-hand thread internal right-hand thread

Feed direction away from the chuck

L L R R L L
L
R

R
R L R

external right-hand thread external left-hand thread internal right-hand thread internal left-hand thread

Step 2 • Select Holder from Catalog Page
The insert size must match the gage insert size of your toolholder selection: Select the appropriate holder for the insert size and hand:

Required Information:
• External/internal operation.
• Minimum bore diameter (for internal operations).
• Hand of tool.
• Insert size (gage insert).

catalog gage
number insert
NSR-163D N.3R NOTE: Optimize your threading operation by using the proper infeed method
and the recommended infeed values.
NSR-164D N.4R
See the Technical section on pages F83–F105 of this catalog.
NOTE: TopThread toolholders and boring bars are listed with a gage insert
to indicate the size and hand required. They are compatible with For internal threading, minimum bore varies depending on thread type.
both grooving and threading inserts of the same size.
See page F96 for details.

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