Apps like Screw Thread Data Calculator

Here are some great alternatives to Screw Thread Data Calculator by Roger Pope :
Thread pitch gauge
Thread pitch gauge
★4.0
Thread calculator
Thread calculator
★4.1
Thread calculator
Thread calculator
★4.4
Machine Screws Drill/Tap Info
Machine Screws Drill/Tap Info
★4.7
Thread Cutting & Calculators
Thread Cutting & Calculators
★4.0
iMachinist
iMachinist
★3.4
Lathe Simulator
Lathe Simulator
★4.2
Lathe Simulator Lite
Lathe Simulator Lite
★3.4
CNC VMC
CNC VMC
★4.5
MechTab
MechTab
★4.4
Thread UN/ISO/Tr
Thread UN/ISO/Tr
★4.3
Nuts & Bolts
Nuts & Bolts
★3.8
Drill Bit Charts Pro
Drill Bit Charts Pro
★4.8
Saddle Stitch - Thread Length
Saddle Stitch - Thread Length
★5.0
Smart Ruler Pro
Smart Ruler Pro
★4.5
Nuts & Bolts PRO
Nuts & Bolts PRO
★4.6