Torque Wrench-Accuracy certification
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Road Master
Joined: Oct 2012
Posts: 777
Likes: 45
From: Beaumont, Ca
Torque Wrench-Accuracy certification
Why is there no accuracy certification for using a torque wrench on a left handed thread? All torque wrenches I have seen provide certification for right handed thread, but not for left handed thread. I need to torque down the nut on the clutch pack, which has left handed thread, but without any certification of accuracy, wouldn't that be like Rusky roulette?
Seasoned HDF Member
Joined: Aug 2006
Posts: 24,496
Likes: 30,783
From: Pennsylvania
When I was working Special Weapons as an Army Civilian, we had a couple of torque wrenches that needed to be calibrated for left hand pulls. Our Calibration folks would set them up. They were marked a such and stored separate from the right hand torque wrenches. However, that was a highly specialized maintenance operation with no error allowed.
You can send your torque wrenches out and have them calibrated for left hand; however, probably not worth the cost.
As Twisted said, for your application should not make too much of a difference, just change the direction and pull a few times on some bolt to make sure it is click breaking. Or maybe get a beam type torque wrench if you are OCD.
You can send your torque wrenches out and have them calibrated for left hand; however, probably not worth the cost.
As Twisted said, for your application should not make too much of a difference, just change the direction and pull a few times on some bolt to make sure it is click breaking. Or maybe get a beam type torque wrench if you are OCD.
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Road Master
Joined: Oct 2012
Posts: 777
Likes: 45
From: Beaumont, Ca
If it does not make much of a difference when attempting to torque a left handed thread, then it also should not make much of a difference for right handed threads. The accuracy and certification of torque values is important whether right or left.
Road Captain
Joined: Oct 2020
Posts: 518
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From: Central Iowa
Seasoned HDF Member
Joined: Feb 2016
Posts: 8,001
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From: NC
Until you have components come loose because they were not tight enough. Or you break bolts trying to be sure those parts do not come loose. I have two torque wrenches. Soon to buy one more.
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Road Warrior
Joined: Nov 2022
Posts: 1,539
Likes: 543
From: MN
I don't go through the hassled of recalibrating torque wrenches for home use. The stuff we work on isn't usually critical stressed to the limit stuff unlike military and some commercial stuff. Our tolerances are so we don't snap a bolt head off in use, nor have the assembly fall apart in use.
I bought Snap-On quality CDI wrench heads, with a Taiwanese arm. Keeps costs in line for consumer use and accuracy.
In the factory, we were required annual torque recalibration and recertification for every torque tool in the shop - for both commercial and military biz.
I bought Snap-On quality CDI wrench heads, with a Taiwanese arm. Keeps costs in line for consumer use and accuracy.
In the factory, we were required annual torque recalibration and recertification for every torque tool in the shop - for both commercial and military biz.
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