Calculated Industries MACHINIST CALC PRO User Manual page 51

u.S. THREAD SIzING
In U.S. mode, the Thread Sizing function provides the same
Thread characteristics as the metric mode, but includes Numeric
and Fractional Thread Sizes and Threads Per Inch (TPI).
When using the
Size. Upon entering the Thread Size, the Threads per Inch
(TPI) is required. If the entered Thread Size is a standard
size, continuous presses of the
the available common TPI. Once the desired TPI is reached,
pressing
O
enter is not a standard size or if you have a non-common TPI,
you will need to directly enter the TPI value, pressing
entering it in order to store the Thread Size.
The following specifies the entry ranges that the calculator
allows for the Thread Size and TPI values for numeric and
fractional Thread Sizes:
Numeric
Fractional
Note: Entries outside of the ranges mentioned above will result in
an Entry Error.
U.s. Thread Classes
With the Machinist Calc Pro you can choose 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
Internal
external
* Default setting
key, the first entry is considered the Thread
t
stores the Thread Size. If the Thread Size you
Thread size
0,1,2,3,4,5,6,8,10,12,14
0.06" to 6"
1b
1a
key will toggle through
t
TPI
less than 100
less than 100
U.s. Thread Classes
2b*
2a
after
t
3b
3a
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ser s Uide