MultiSens vs Bolt Torque Spec Calc

The app is designed to test drive different Machine Condition Monitoring sensors, connect to them and plot the Time Waveform graph and the Vibration Spectrum in Acceleration, dB and Velocity. The app will auto-calibrate to each sensor and provides data acquisition with different sampling rates and number of samples.

Built for mechanics, millwrights, and equipment installers who need bolt torque on the bench - not a desktop tool. WHAT IT DOES Looks up torque values for standard bolt sizes and grades using the T = K x D x F formula with K = 0.20. SAE grades 2, 5, and 8 across 28 sizes from #6-32 to 1-1/2 inch. Metric classes 4.6, 8.8, 10.9, and 12.9 across 17 sizes from M3 to M36. Dry vs. lubricated multiplier applied to the result. INPUTS - Standard: SAE or Metric - Bolt size (28 SAE or 17 metric sizes available) - Bolt grade or class - Lube condition: Dry or Lubricated RETURNS - Torque in ft-lb - Torque in N·m CALCULATION BASIS - Torque formula: T = 0.20 x D x F - Preload F = 75% of proof strength times tensile stress area - Lubricated multiplier: 0.75 times the dry value WHY THIS APP, NOT THE FREE ONES - Math is shown - formula and assumed K factor visible, not hidden. - 45 size and grade combinations covered in one tap. - Works offline - shop floor, field repair, no Wi-Fi. Always available. - No login. No ads. No telemetry. No subscription. PRICING $1.99. Pay once, own it. Lifetime access on iPhone, iPad, and Mac via Family Sharing. NOT A SUBSTITUTE FOR Manufacturer-specified torque values for safety-critical fasteners. Calibrated wrench certificates. Specific K-factor adjustments for anti-seize, plating, or galvanized threads - this app uses K = 0.20 for both dry and lubricated, with the 0.75x multiplier as the only lube adjustment. Verify against the OEM tightening spec for the specific application.