Calculated Industries 4087 User Manual

Contents

48 — Machinist calc™ Pro(cont’d)t(Min. Internal Major Diameter) MAJR- SIZe 5.0000 MM5. Switch to External 4g Tolerance Class and find the availableExternal Thread characteristics:gbb(Thread Class) eXT MM 4Gt THReD SIZe $ 5. – 0.75 MMt(Rod Size for Thread Cutting) ROD SIZe 5.0000 MMt(Rod Size for Cold Forming) CfORM SIZe 4.4520 MMt(Max. External Pitch Diameter) PTCH+ SIZe 4.4910 MMt(Min. External Pitch Diameter) PTCH- SIZe 4.4350 MMt(Max. External Major Diameter) MAJR+ SIZe 4.9780 MMt(Min. External Major Diameter) MAJR- SIZe 4.8880 MMt(Max. External Minor Diameter) MINR+ SIZe 4.1660 MMCustom Thread PercentageThe Machinist Calc Pro uses a default Thread Grip Percentageof 75% when calculating Tap Drill sizes. With the customPercentage Thread function, you can enter a different value tocalculate Tap Drill sizes.Calculate the Tap Drill Size for a 1/4-26 screw, then changethe Thread Grip Percentage to 50% and calculate the newTap Drill Size.KeySTROKe DISPLAyg * ALL CLeARed1. Enter the Thread Size and calculate the Cut Tap and Roll TapDrill Sizes:1/4t SIZe 1/4 – INCH26t THReD SIZe $ 1/4 – 26 INCHt(Cut Tap Drill Size) TAP DRILL SIZe 3t* (Roll Tap Drill Size) R-TAP DRILL SIZe 5.9 MMKeySTROKe DISPLAy