Why would I want to measure torque while loosening a bolt or nut?

An answer to a question asking about torque wrench maintenance mentions to not use a particular kind of torque wrench for loosening bolts.

Can you determining tightening torque, from loosening?

By watching torque when loosening bolts, can you determine how much they should be tightened? Or are loosening torques somehow different from ...

Checking torque on already tightened bolts

Torque should be measured while the bolt or nut is rotating. So checking torque on a stationary bolt (nut) doesn't make a lot of sense. The ...

Can you determine the torque spec of an already installed fastener ...

Checking torque of a fastener by measuring removal torque (breakaway) will never produce the correct value. Attempting to measure the 'installed ...

Loosening Torque Testing Method - Aztec Bolting

Simply take a bolt or screw that is tightened and start to loosen it progressively. Be keen and record the exact torque reading when the fastener becomes loose.

How to explain the application of torque when using a wrench to ...

Torque acts in either a clockwise, or counter-clockwise direction, The effects of torque can cause something like the threads on a bolt/nut to ...

Loosening Torque Test Method | Mountz Torque Tips & Solutions

To conduct this test, take a screw or bolt that is tightened down and begin to loosen it. When the fastener breaks loose, record the torque ...

How to Measure Torque on a Bolt | Peak innovations Engineering

The torque reading at that moment is the residual torque initially applied to the bolted joint. Loosening Method. This method of measuring bolt torque is ...

Comparing the Torque values to tighten vs loosen a bolt

I never measured this, but I would guess the untightening torque will always be higher. When you are tightening a screw, it necessarily moves ...

What Is the Best Way to Check the Torque Value on a Bolt?

You can expect as much as a 20% discrepancy if a bolt is left to stand for around 48 hours. Find bolts, nuts, and other fasteners at Marsh ...

Torque Variations During Tightening and Untightening of Bolts

When tightening a bolt or nut, the applied torque must overcome the thread friction, the friction under the bolt head or nut and the inclined plane of the ...

Torque to unscrew a bolt - Mechanical engineering general discussion

Overcoming the initial static friction to loosen the bolt can easily require more torque than its original tightening torque. Keep in mind that ...

What is a residual torque measurement? | Fastener + Fixing Magazine

A common check, completed to assess whether a nut has been tightened to the correct torque, or whether some loosening has occurred, is known as a residual ...

Bolt Break-Away Torque | Measuring tightening vs. loosening

Why is loosening torque lower than tightening torque? Thank you for your help! Early access for Patrons http://www.Patreon.com/AvE.

A new approach to the tightness checking of bolts

When you are tightening a threaded fastener a significant amount of torque is needed to overcome friction in the threads and under the nut face (or the bolt ...

How does one measure the amount of torque used in removing or ...

When tightening nuts and bolts to a specifically required torque, the tool you need is a torque wrench. Say you need to tighten a bolt to 70 lb- ...

How to Conduct the Loosening Torque Test - YouTube

http://www.mountztorque.com/?kmas=216 Ensuring a well-tightened fastener is installed properly to the pre-defined torque specification will ...

What is Torque Testing, How is Torque Testing Done | Carelabz.com

What happens when you over torque? ... The process of over torqueing is one in which you are tightening a nut or bolt head and stretching the bolt. In such cases ...

Checking Your Bolt Torque - Maxpro Corporation

The off-torque method – This method involves measuring the torque needed to rotate the bolt/nut in the untightening direction (this is usually ...

HELP: self-locking nut run-on torque check - Physics Forums

If self locking nuts or bolts are used, the correct procedure is to measure this torque using a beam type or dial type torque wrench while the ...