Calculated Industries Machinist Calc Pro 4087 - Pitch Diameter - Known 3-Wire Measurement and Wire Size

Us e r 's GU i d e — 53
Find the maximum allowable 3-Wire Measurement and Pitch
Diameter for a 3/8 – 16, Class 2A (External) screw using 0.040
Inch wire:
KEYSTROKE DISPLAY
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. Set the Thread Class to 2A:
2gb
* (Thread Class) EXT 2A
* If necessary, continue pressing
b
until the desired External Thread
Class is displayed.
4. Enter the Wire Size**:
.04gf
(Wire Size) WIRE SIZE 0.04 INCH
5. Find the Maximum 3-Wire Measurement:
gR
(3-W Measure) 3WIRE SIZE 0.3990 INCH
6. Find the Pitch Diameter:
R
P-DIA SIZE 0.3331 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 3-Wire Measurement.
Pitch Diameter – Known 3-Wire Measurement and Wire Size
You can also nd the measured Pitch Diameter if you know
the 3-Wire Measurement and the Wire Size used to obtain the
measurement.
(cont'd)