User`s guide

Us e r 's GU i d e — 45

3. Find the recommended Cutting Tap Hole Size (Cut Tap Drill

Size) and the Thread Outside Diameter (Minimum Major

Diameter).

Cut Tap Drill Size)

TAP DRILL SIZE 7.25 MM

(Outside Diameter) OD SIZE 8.0000 MM

* After entering the Pitch value, the press of

is required in order to

store the entered Thread Size.

Thread Classication (NOT AVAILABLE ON MODEL 4086)

The Machinist Calc Pro provides additional outputs and gives

you the choice between Internal and External Threads. Entering

a U.S. Thread Size will allow you to choose among U.S. Thread

Classes as shown below.

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 Tolerance Classes as shown below.

Thread Type Metric Thread Tolerance Classes

Internal

6H*

External

* Default settings

Changing Thread Classes

To display the current Thread Classication, press

Repeated presses of

will toggle between External and

Internal Thread Types. You can change the number of a

Thread Class by entering the number of the desired class/

grade and pressing

KEYSTROKE DISPLAY