48 — Ma c h i n i s t ca l c ™/ Ma c h i n i s t ca l c ™ Pr o
3. Enter the TPI and store the nal Thread Size:
32t
THRED SIZE 8 – 32
4. Find the available Internal Thread characteristics:
t
(Cut Tap Drill Size)
TAP DRILL SIZE 29
t
(Roll Tap Drill Size)
R-TAP DRILL SIZE 3.75 MM
t
(Close Fit Drill Size) CLOSE DRILL SIZE 18
t
(Free Fit Drill Size) FREE DRILL SIZE 16
t
(Min. Internal Pitch Diameter) PTCH- SIZE 0.1437 INCH
t
(Max. Internal Pitch Diameter) PTCH+ SIZE 0.1475 INCH
t
(Min. Internal Minor Diameter) MINR- SIZE 0.1300 INCH
t
(Max. Internal Minor Diameter) MINR+ SIZE 0.1390 INCH
t
(Min. Internal Major Diameter)
MAJR- SIZE 0.1640 INCH
5. Switch to Thread Class 2A and nd the available External
Thread characteristics:
gbb
(Thread Class) EXT 2A
t
THRED SIZE
8 –
32
t
(Rod Size for thread cutting) ROD SIZE 0.1640 INCH
t
(Rod Size for cold forming) CFORM SIZE 0.1450 INCH
t
(Max. External Pitch Diameter) PTCH+ SIZE 0.1428 INCH
t
(Min. External Pitch Diameter) PTCH- SIZE 0.1399 INCH
t
(Max. External Major Diameter) MAJR+ SIZE 0.1631 INCH
t
(Min. External Major Diameter) MAJR- SIZE 0.1571 INCH
t
(Max. External Minor Diameter) MINR+ SIZE 0.1259 INCH
Fractional Thread Size – Model 4087
Find the available Internal and External Thread characteristics
for a 1/4 Inch, 28 TPI screw.
KEYSTROKE DISPLAY
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