Calculated Industries MACHINIST CALC PRO - External Thread; Thread Classification; Changing a Thread Classification

Us e r 's GU i d e — 33
External Thread
Thread Size Minimum Pitch Diameter
Cut Rod Size Maximum Major Diameter
Roll Shank Size Minimum Major Diameter
Maximum Pitch Diameter Maximum Minor Diameter
Thread Classication
With the Machinist Calc Pro you can choose between Internal
and External Threads.
Thread Type Metric Thread Tolerance Classes
Internal
3G
3H
4G
4H
5G
5H
6G
6H*
7G
7H
8G
8H
9G
9H
External
3g
3h
3e
3f
4g
4h
4e
4f
5g
5h
5e
5f
6g
6h
6e
6f
7g
7h
7e
7f
8g
8h
8e
8f
9g
9h
9e
9f
* Default setting
Changing a Thread Classication
To display the current Thread Classication, press
gb
.
You can change the number of a Thread Class by entering
the number of the desired grade and pressing
gb
.
Repeated presses of
b
will toggle between External and
Internal Thread Types.
KEYSTROKE DISPLAY
g*
ALL CLEAREd
1. Enter a Tolerance Grade of 4:
4gb
(Thread Class) INT MM 4H
2. Toggle through the available Tolerance Positions for the
entered Grade:
(cont’d)
UG4089E-A-inside.indd 33 6/9/2011 3:16:18 PM