User`s guide

Us e r 's GU i d e — 39
THrEaD SIzINg
Basic Thread Sizing
On both Machinist Calc and Machinist Calc Pro, the
t
key
allows you to enter a numeric, fractional or metric Thread
Size and then toggle through the various available Thread
characteristics, as shown in the tables provided later in this
section.
When using the
t
key, the rst entry is considered the
Thread Size. Upon entering the Thread Size, the Threads per
Inch (TPI) or Pitch is required. If the entered Thread Size is a
standard size, continuous presses of the
t
key will toggle
through the available common TPI or Pitches. Once the
desired TPI/Pitch is reached, pressing
O
stores the Thread
Size. If the Thread Size you enter is not a standard size or if
you have a non-common TPI/Pitch, you will need to directly
enter the TPI/Pitch value, pressing
t
after entering it in order
to store the Thread Size. Both of these entry methods are
covered in the examples provided within this section.
The following species the entry ranges that the calculator
allows for the Thread Size and TPI/Pitch values for numeric,
fractional and metric Thread Sizes:
Thread Size TPI/Pitch
Numeric 0, 1, 2, 3, 4, 5, 6,
8, 10, 12, 14
less than 100
Fractional 0.06” to 6” less than 100
Metric 1 mm to 300 mm less than or equal to 10
Note: Entries outside of the ranges mentioned above will result in an
Entry Error.
(cont'd)