User`s guide

54 — Ma c h i n i s t ca l c ™/ Ma c h i n i s t ca l c ™ Pr o
Find the Pitch Diameter of a 3/8-16, Class 2A (External) screw
with a 3-Wire Measurement of 0.3975 Inches obtained using a
0.040 Inch wire:
KEYSTROKE DISPL AY
OO
0.
1. Enter the Thread Size:
3/8 t
SIZE 3/8 – INCH
2. Enter the Threads per Inch and store the nal Thread Size:
16t
THRED SIZE 3/8 –
16
INCH
3. Enter the Wire Size*:
.04gf
(Wire Size)
WIRE
SIZE 0.04 INCH
4. Enter the 3-Wire Measurement:
.3975gR
(3-W Measure)
3WIRE
SIZE 0.3975 INCH
5. Find the Pitch Diameter:
R P-DIA SIZE 0.3316 INCH
R WIRE SIZE 0.04 INCH
* If no Wire Size is entered, the calculated Best (Ideal) Wire Size will
be used to nd the Pitch Diameter.
BOlT PaTTErN
With the Machinist Calc and Machinist Calc Pro, you can
determine a Bolt Pattern by entering the Bolt Circle Diameter,
the Number of Bolt Holes and the Angle of the rst bolt hole
(optional). The Machinist Calc Pro offers the added ability to enter
an optional Center x and y-coordinate of the Bolt Pattern.
In addition to calculating the x and y-coordinates for each bolt
hole, the Bolt Pattern function also calculates the hole center-to-
center spacing (i.e. on-center distance from hole to hole).
(cont'd)