48 — Machinist calc™ / M achinist calc™ Pro3. Enter the TPI and store the final Thread Size:32t THReD SIZe 8 – 324. Find the available Internal Thread characteristics:t(Cut Tap Drill Size) TAP DRILL SIZe 29t(Roll Tap Drill Size) R-TAP DRILL SIZe 3.75 MMt(Close Fit Drill Size) CLOSe DRILL SIZe 18t(Free Fit Drill Size) fRee DRILL SIZe 16t(Min. Internal Pitch Diameter) PTCH- SIZe 0.1437 INCHt(Max. Internal Pitch Diameter) PTCH+ SIZe 0.1475 INCHt(Min. Internal Minor Diameter) MINR- SIZe 0.1300 INCHt(Max. Internal Minor Diameter) MINR+ SIZe 0.1390 INCHt(Min. Internal Major Diameter) MAJR- SIZe 0.1640 INCH5. Switch to Thread Class 2A and find the available ExternalThread characteristics:gb b(Thread Class) eXT 2At THReD SIZe 8 – 32t(Rod Size for thread cutting) ROD SIZe 0.1640 INCHt(Rod Size for cold forming) CfORM SIZe 0.1450 INCHt(Max. External Pitch Diameter) PTCH+ SIZe 0.1428 INCHt(Min. External Pitch Diameter) PTCH- SIZe 0.1399 INCHt(Max. External Major Diameter) MAJR+ SIZe 0.1631 INCHt(Min. External Major Diameter) MAJR- SIZe 0.1571 INCHt(Max. External Minor Diameter) MINR+ SIZe 0.1259 INCHfractional Thread Size – Model 4087Find the available Internal and External Thread characteristicsfor a 1/4 Inch, 28 TPI screw.KeYSTROKe DISPLAY
