Inch pound Foot Pounds
Outstanding HDF Member
Joined: Dec 2009
Posts: 2,502
Likes: 6
From: Lapeer , Mich
No flaming here, but anyone using this forum very likely uses Google on a regular basis. Google is your friend and finding that answer is only a couple of clicks away.
That is why some may get flamed a bit for staring blankly at their torque wrench silently pondering how to convert in/lb to ft/lb and then posting their confusion on a forum.
That is why some may get flamed a bit for staring blankly at their torque wrench silently pondering how to convert in/lb to ft/lb and then posting their confusion on a forum.
Extreme HDF Member
Joined: Jun 2011
Posts: 10,216
Likes: 224
From: Glendale AZ
Can you break that down a little more, explain the 20%.....I for one am interested.
Elite HDF Member
Joined: Sep 2007
Posts: 4,928
Likes: 69
From: Near Myrtle Beach, SC
Now if you run cheap Chinese ****, well, that's another story.
And for the OP...the quickest way to damage threads is to use a foot pound wrench for an inch pound application...and of course if the foot pound wrench is a cheap piece of **** you are almost guaranteed to ***** up your fastener.
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Joe Kucinski
Elite HDF Member
Joined: Nov 2010
Posts: 3,846
Likes: 173
From: Simi Valley, CA
None of this is to say you can't use the wrench at these low settings, but with critical applications you do need to be aware of the compromised accuracy.
Here's an example of accuracy standards for a $550.00 Snap-On wrench with a range of 12.5 to 250 ft. lbs. You'll notice that it is less accurate at settings below 20% of the full scale.
The following is quoted from a Snap-On catalog...
Note:
The certification of accuracy provided per ASME and ISO Standards is 20% to 100% of full scale.
Torque Accuracy: 10% to 19% of full scale
ą4%CW, ą6%CCW
Torque Accuracy: 20% to 100% of full scale
ą2%CW, ą3%CCW
Torque Accuracy: 5% to 9% of full scale
ą8%CW, ą10%CCW
Last edited by 2black1s; Apr 4, 2013 at 11:29 PM.
