Torque Toolbox: Bolt & Tap
Everyone
info
50+
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About this app
Torque Toolbox is a bolt torque calculator and workshop reference for mechanics, fitters, machinists and DIYers. Get the right tightening torque in seconds, plus tap drill sizes, drill charts and feeds & speeds. Everything works offline, so it's ready in the shed, on site or under the car.
Stop tabbing between browser windows at the bench. Torque Toolbox puts the numbers you need in one fast app.
BOLT TORQUE CALCULATOR
• Step-by-step torque setup: thread size, pitch, bolt grade, materials, lubrication, application and gasket
• Metric, UNC and UNF threads, coarse and fine pitch
• Results in Nm and lb-ft with a ±10% range
• Show Calculation: see the formula and the numbers behind every result
• Advanced options for custom preload and K factor
TORQUE CHARTS & TIGHTENING SEQUENCES
• Bolt grade chart, including head markings
• Star pattern and staged tightening sequences for flanges, wheels and covers
TAP DRILL & DRILL SIZE CHARTS
• Drill & Tap calculator: the right tap drill size for Metric, UNC and UNF threads, then torque that bolt in one tap
• Tap drill chart for quick lookups
• Drill bit size converter: metric, fractional, decimal, number and letter drills side by side, plus the nearest standard sizes
FEEDS & SPEEDS FOR LATHE AND MILLING
• Spindle RPM, feed rate and cutting speed for turning, facing, parting and milling
• Settings for mild steel, stainless steel, aluminium, brass, cast iron and tool steel, with HSS or carbide tools
UNIT CONVERTER
• Torque: Nm to ft-lb, lb-in, kgf-m and more
• Length, weight, temperature, speed, pressure, power, area, volume and other workshop units
• Decimal to fraction conversions
SAVED CALCULATIONS
• Save torque, drill & tap and machining setups, and reuse them for repeat jobs
Built by a mechanical fitter, for people who work with their hands. Clear and simple, with the working shown, not just a number.
Built for: Machinists · Mechanical Fitters · Mechanics · Fabricators · Maintenance Trades · Apprentices · Workshop Technicians · Serious DIY & Automotive Users
Torque values are estimates only. Always verify against manufacturer specifications and approved procedures for critical applications.
Stop tabbing between browser windows at the bench. Torque Toolbox puts the numbers you need in one fast app.
BOLT TORQUE CALCULATOR
• Step-by-step torque setup: thread size, pitch, bolt grade, materials, lubrication, application and gasket
• Metric, UNC and UNF threads, coarse and fine pitch
• Results in Nm and lb-ft with a ±10% range
• Show Calculation: see the formula and the numbers behind every result
• Advanced options for custom preload and K factor
TORQUE CHARTS & TIGHTENING SEQUENCES
• Bolt grade chart, including head markings
• Star pattern and staged tightening sequences for flanges, wheels and covers
TAP DRILL & DRILL SIZE CHARTS
• Drill & Tap calculator: the right tap drill size for Metric, UNC and UNF threads, then torque that bolt in one tap
• Tap drill chart for quick lookups
• Drill bit size converter: metric, fractional, decimal, number and letter drills side by side, plus the nearest standard sizes
FEEDS & SPEEDS FOR LATHE AND MILLING
• Spindle RPM, feed rate and cutting speed for turning, facing, parting and milling
• Settings for mild steel, stainless steel, aluminium, brass, cast iron and tool steel, with HSS or carbide tools
UNIT CONVERTER
• Torque: Nm to ft-lb, lb-in, kgf-m and more
• Length, weight, temperature, speed, pressure, power, area, volume and other workshop units
• Decimal to fraction conversions
SAVED CALCULATIONS
• Save torque, drill & tap and machining setups, and reuse them for repeat jobs
Built by a mechanical fitter, for people who work with their hands. Clear and simple, with the working shown, not just a number.
Built for: Machinists · Mechanical Fitters · Mechanics · Fabricators · Maintenance Trades · Apprentices · Workshop Technicians · Serious DIY & Automotive Users
Torque values are estimates only. Always verify against manufacturer specifications and approved procedures for critical applications.
Bolt torque calculator, torque chart, tap drills, feeds & speeds. Works offline.
Updated on
Safety starts with understanding how developers collect and share your data. Data privacy and security practices may vary based on your use, region, and age. The developer provided this information and may update it over time.
- No data shared with third partiesLearn more about how developers declare sharing
- This app may collect these data typesApp activity, App info and performance, and Device or other IDs
- Data is encrypted in transit
What’s new
What's new in 1.0.6:
- Fresh new app icon
- More accurate torque values
- New Drill Bit Size tool: see every size format at once, plus the nearest standard bits
- Drill & Tap: save and copy results, plus a "Torque this bolt" shortcut
- Cleaner numbers throughout (e.g. 1/8" now shows 3.18 mm)
- Smoother torque wizard steps
- Better parting feeds in Feeds & Speeds
- Tidier Quick References and Unit Converter
- General fixes and improvements
- Fresh new app icon
- More accurate torque values
- New Drill Bit Size tool: see every size format at once, plus the nearest standard bits
- Drill & Tap: save and copy results, plus a "Torque this bolt" shortcut
- Cleaner numbers throughout (e.g. 1/8" now shows 3.18 mm)
- Smoother torque wizard steps
- Better parting feeds in Feeds & Speeds
- Tidier Quick References and Unit Converter
- General fixes and improvements
App support
phone
Phone number
+61499643716
About the developer
ETTRIDGE, MITCHELL THOMAS
Torques.apps@gmail.com
Australia