Calculated Industries 4087 - External Thread; Thread Classification; Changing Thread Classes

42 — Ma c h i n i s t ca l c ™ Pr o
External Thread
 
 
 
 
Thread Classication
With the Machinist Calc Pro you can choose between Internal


Thread Type U.S. Thread Classes
Internal 1B 2B* 3B
External 1A 2A 3A
Entering a Metric Thread will allow you to choose among Metric

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 settings
Changing Thread Classes

gb
.
Repeated presses of
b

Internal Thread Types. You can change the number of a

grade and pressing
gb
.
(cont’d)