36 — M
achinist
c
alc™
P
ro
(cont’d)
Calculate the Tap Drill Size for a M3.5 x 0.60 screw, then
change the Thread Grip Percentage to 50% and calculate the
new Tap Drill Size:
KeysTRoKe
DIsPlay
g *
all CleaRed
1. Enter the Thread Size and calculate the Cut Tap and Roll Tap
Drill Sizes:
3 . 5 m t
sIZe
3.5 –
MM
. 6 t
THReD
sIZe
$
3.5 – 0.6
MM
t
(Cut Tap Drill Size)
TaP
DRIll sIZe
2.9
MM
t
* (Roll Tap Drill Size)
R-TaP
DRIll sIZe
3.2
MM
2. Change the Thread Grip Percentage to 50% and calculate
the new Cut Tap and Roll Tap Drill Sizes:
5 0 g t
(% Thread)
THRD%
sIZe
$
50.
t
THReD
sIZe
$
3.5 – 0.6
MM
t
(Cut Tap Drill Size)
TaP
DRIll sIZe
3.1
MM
t
* (Roll Tap Drill Size)
R-TaP
DRIll sIZe
3.3
MM
* Repeated presses of
t
will toggle through the inputs and outputs,
starting with the Close Fit Drill Size.
WIRE SIzES AND 3-WIRE mEASuREmENTS
Wire size
If you know your Thread Size, you can find the Ideal,
Maximum and Minimum Wire Sizes you can use for that size
Screw Thread.
Find the Ideal, Maximum and Minimum Wire Sizes for
measuring a M1.60 x 0.35 Thread:
KeysTRoKe
DIsPlay
O O
0.
UG4089E-A-inside.indd 36
6/9/2011 3:16:18 PM
