Torque wrench dilemma
I still stand by my other statement though, Proto tools are VERY nice quality although I've never used their TQ wrenches.
Edit: Although looking at Snap On's site (under "other Snap On sites), it lists Blackhawk as a Snap On company. Yet, under Stanley's sites, it lists Blackhawk as a division of Proto..... although that's Blackhawk Collision Repair, and the Stanley Blackhawk is hand tools... wonder if that's just coincidance? The insignias are different but who the hell knows??? Ok now I'm confused.....
I don't think stanley makes many snap on tools, stanley make a ton of craftsman, Matco, and Mac hand tools not snap on though.
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I have:
1. Craftsmutt clicker
2. Pittsburg clicker
3. Two Harbor Frieght clickers
4. Craftsmutt bar needle with scale (super cheapie)
I was wondering how accurate the Craftsmutt bar type wrench is so I torked a few bolts down and tested various readings from the different wrenches I own. Surprisingly, the bar-type wrench is quite accruate. Hey - the test was not really scientific but I know it is in the ball park...
As far as clicker type wrenches go, it seems the Craftsmutt breaks often - from what I here on the board. It may just be that more of them are sold but who knows for sure...
If I ever buy another wrench, I may try a Kobalt. Snap-on is great but they too high-priced for me.
The Best V8 Stories One Small Block at Time
In addition to what he said, Williams Tools was bought up by Snap-On.
Danaher owns/makes tools for: Armstrong, Matco, Craftsman, AllenTM, KD-Tools, Holo-Krome, NAPA, and SATA.
Stanley owns/makes Husky, Mac, and Proto Tools (a very expensive industrial brand), Proto is unique because it goes through addtional testing and certification because it is used by NASA, the military, and industrial customers (including General Motors).
As Mentioned SK is owned by Facom....which is a French Company.
You guys should really take a look. I can't vouch for the accuracy of the information there, but it's quite interesting, and contradicts some of what Mech is saying.
Example:
To: "John T. Blair"
Subject: Hand tools
Date: Wed, 23 Aug 2000 13:44:50 -0500
I just wanted to add my 2 cents. Well a nickle really, considering that I work for Snap-on and we over charge for everything : )
I was reading on your site about 'who makes what tools' http://www.team.net/www/morgan/tech/whotools.html. One part explians that the various manufactures use 'the exact same forgings' for all the various brands they sell. This is NOT true for Snap-on tools. Our retail brand Kobalt sold through Lowe's stores, shares very little if any traits with our traditional Snap-on line. They are made in the same plants, but most of the manufacturing tooling is different. They are made by the same UNION skilled machinists useing the same tried and true processes. The designs for these tools are completly different. They use different material and are heat treated differently.
I hope this clears things up slightly
Dan Peronto
Tool Designer
Snap-on Tools
Kenosha Mfg Plant
Example:
http://www.danaher.com/business/stra...ail.asp?key=12
http://www.stanleyworks.com/bu_handtools.asp
I just when to that link....and I have WP file of that from a forum I had come a cross a thread that had that listed a while back. I think it was either in Altimas.net or Tractorsbynet.
Example:
http://bricklin.org/TechCentral/TCAr...me.htm#GEN-TOC
Snap-On makes a very durable torque wrench that can be accurate and remain so after it is adjusted correctly. They tend to be reliable over time, but I would not trust the accuracy of the wrench when it is first purchased. Most of the wrenches that we cal'd for the Air Force were spec'd at +/-4% CW and +/-6% CCW, and I would say that only about 50% of them met this spec out of the box. After we adjusted them initially to our CDI standard, they held the adjustment great and performed accurately. Almost all of these were the click-type.
Craftsman wrenches, especially the type with the setting window were absolute junk. Not only did most of them not meet their specs out of the box, but they would not adjust within specs on the high and low end of the scale. They were typically non-linear (low on the low setting, and high on the high setting) which resulted in having to send them back to Sears for replacement.
I don't remember having too many problems with Proto wrenches... nothing that stands out in my mind anyways.
I have only dealt with two Husky wrenches, both were 250# click-types. I bought one and my brother-in-law bought one from Home Depot at the same time. I checked the accuracy of both of them before use, and they were both within 2% CW, I didn't check either of them CCW since we weren't going to use them in that direction. I pulled my wrench out of the shed where it had been sitting for 2 years without being used, and took it in to work to make sure it was still accurate and found that the handle retaining nuts had come loose so the handle was spinning freely instead of adjusting the torque setting. The fix was as simple as jamming a flat-headed screwdriver inside the back of the handle to hold the nut in place, then back the Allen head adjustment screw out against it. This tightened it back up so I could set the torque, so I checked the accuracy and it is still within +/-2%!. I think we paid $40 each for these wrenches, and they're one of the best values I have found yet.
The beam style wrenches are usually very accurate throughout their useable lives, but are not always the easiest to use. No wrench can be expected to be more accurate than its manufacturer's specifications though, even though some of them are.
For storage purposes with all torque wrenches, you should return the wrench to its lowest setting before putting it away. There is a spring inside that can get damaged if you don't.
Never use your torque wrench to loosen a bolt, that's not what it was designed for. Even if the wrench is designed to be used in the CCW direction, it will cause excess wear on the internals. Why not use a cheap breaker bar that has no accuracy requirements instead?
There are several factors related to the way it is used that can influence the accuracy of a torque wrench. If you aren't holding the handle level while trying to tighten the fastener, I've seen it throw off readings by 10-15%. Also if you hold the wrench by a part other than the center of the handle (like the metal body, or if you are for some reason using a pipe to extend the handle) it can throw off the accuracy greatly. Any kind of extension will reduce the applied torque value due to flex, and also extreme cold and hot temperatures will throw off their accuracy.
Torque wrenches should definitely have their accuracy verified on a regular interval though. Most of our customers use a 12 month interval, people who use them very often might use a 6 month interval, and most of the Air Force departments sent theirs in every 3 months! Verifying accuracy is important for all measuring tools though, torque wrenches, DMMs, oscilloscopes, etc.
Let me know if you have any other questions! I covered everything that came to the top of my mind.


