CDI Torque Micro-Adjustable Torque Screwdrivers offer versatility for applications that require more than one torque value. These torque screwdrivers are particularly suited for the electronics industry and for instrument assembly work. A simple, cam-over design prevents over-tightening and possible damage to components. Torque settings are easily and accurately changed with a unique adjusting knob and easy-to-read window scale. Adjusting the screwdriver is simple. Just pull out the adjusting knob to unlock, turn to the desired setting, then push the knob in until it clicks! Positive locking knob makes accidental setting changes impossible. Automatic lock in counterclockwise direction makes fastener removal a snap. CDI was founded in 1968 and over the years has developed into a world class torque products manufacturing company. The company earned its ISO 9001 International Quality System Certification in 1998, demonstrating a commitment to provide our customers with the highest quality torque measurement and torque limiting devices in the world. CDI has long been a major innovator and leader in electronic torque measurement and torque calibration equipment.
From the Manufacturer
This CDI Torque micro adjustable torque screwdriver offer versatility for applications that require more than one torque value. This torque screwdriver is particularly suited for the electronics industry and for instrument assembly work. A simple, cam over design prevents over tightening and possible damage to components. Torque settings are easily and accurately changed with a unique adjusting knob and easy to read window scale. Adjusting the screwdriver is simple, just pull out the adjusting knob to unlock, turn to the desired setting, then push the knob in until it clicks. The positive locking knob makes accidental setting changes impossible. The automatic lock in counterclockwise direction makes fastener removal a snap. It has a universal 1/4-Inch hex bit holder with a strong earth magnet and has a torque range of 5 to 40-Inch pounds.
From the manufacturer
CDI was founded in 1968 and over the years has developed into a world class torque products manufacturing company. The company earned its ISO 9001 International Quality System Certification in 1998, demonstrating a commitment to provide our customers with the highest quality torque measurement and torque limiting devices in the world. CDI has long been a major innovator and leader in electronic torque measurement and torque calibration equipment.
A. To adjust knob hold body of screwdriver and firmly pull knob to rear. (See Figure IV).
B. Set screwdriver to desired torque as follows EXAMPLE – 22 Ncm
1. Turn adjusting knob clockwise until the major graduation line is aligned with the 20 on scale (See Figure I) and arrow indicator on screwdriver body is in line to “0” graduation on the adjusting knob.
2. Turn adjusting know two increments clockwise. Screwdriver is now set at 22 Ncm. (See Figure II).
3. To lock adjusting knob, push towards the drive until it clicks into the lock position. (See Figure III).
4. To torque fastener, keep hand centered on the screwdriver grip. Turn screwdriver clockwise until a click/impulse is heard or felt. The screwdriver will automatically reset for the next operation.
That guy that bought that thing –
Solid piece of equipmentMy uses so far have revolves around minor gun maintenance. This tool may be overkill for my needs but my sidearms are used daily at work and home, so it wasn’t hard to justify the purchase of an American made product. The wrench is super easy to use, has an affirmative lock and release button, solid but easily adjustable torque setting, and a good clean break at specified torque value.I am not a machinist, but this torque wrench is solidly built and has a good grippy texture. I’ve used it a number of times and trust it more than the $30-45 in/lb torque wrenches sold.This thing certified within fractions of a percent at some torque level’s according to the included manufacturer specs and cert card.Would recommend
Torque Driver for Production Use (Updated)2nd Update: Jan 30, 2013So far 2 of the 3 units purchased are working well. I had the 2 checked in my calibration lab and neither tool had a problem. I also recently purchased a 4th to replace the one that failed. I brought the review up to 4 stars because I still think this is a good product. My operators all love this tool and now prefer it over their previous driver. Currently the 3 drivers are only being used by one or two operators so they don’t have the same use as the first that failed.Update: August 27, 2012Sadly, I had to decrease my rating from 5 stars to 3. It is still a good tool and my operators love it but if they only last 6 months it isn’t worth it. I sent the first unit back to my calibration lab for a 6 month overhaul and the results were disappointing. They were not able to get the tool back into calibration. The low end was a little off, around 1 in lb below the setting. The upper limit was worse, around 48 in lbs when set to 40.I had this particular tool being used 24 hours a day on all my shifts to check for this exact problem. The life span may be a little longer depending on your usage. The highest torque we have is around 36 in lbs.After 3 months of use with the first article, and my calbration labs approval, I purchased two more that are currently being used in production. They have been in use for 2 months with no problems. Once those have gone through my calibration department for their 6 month overhaul, I will update this review.(Original Review March 2012)I purchased this torque driver to test along with others before getting sets for all my operators. So far I have been extremely pleased with the price, performance, and the feedback of my employees. We are using it on multiple torque specs between 10 and 36 in-lbs.My calibration lab was very happy with the tool; both the low and high only had a 2% variation which is very low when compared with our other drivers. My seasoned operators (who usually do not like change) were very pleased with this design and how easy it is to adjust. I am now putting it through the test and having this one used through all our shifts checking longevity. Afterwards I will send it back through calibration and to double check variation and show there are no problems with adjusting torques. If I run into any problems I will update this review.
Larry Petro –
GREAT Torque Wrench/Screwdriver At A GREAT PriceThis CDI micro torque screwdriver is a product distributed through (besides Amazon) Snap-On. This is one of those tools that I don’t use that often, but when its needed it is Really needed. Before I bought this item a little over a year ago I did quite a bit of on-line research and discovered that this CDI tool was literally the “only game in town” in terms of accuracy and reliability. The only other contender that even came close (but not very close) was a torque screwdriver sold by Brownells. Since I do not have a calibration lab I went by the accounts of multiple on line sources, and would suggest that you might do the same…things might have changed in the past year. Amazon had the best IN STOCK price I was able to find a year ago.I do my own gunsmithing and use this tool whenever a precise amount of torque is required per a manufacturers specifications. The torque settings are easy to see and adjust within one inch pound increments. The tool accepts regular screwdriver type bits, and therefore will accept just about anything used to tighten small machine parts. So whether you are tightening a screw or a nut (or something in between), and you have the bit to fit your application, this will do the job for you. The build quality on the tool is excellent. It has the heft of a solid little machine and the handle affords a positive grip that lets you apply the downward pressure necessary to keep your bit solidly on the screw and thus avoid any slippage that could mar your workpiece. As far as I can tell (without a calibration lab) this tool gives the proper, repeatable result. I have not stripped a screw or experienced a malfunction of any sort connected with the use of this item.I am very picky when it comes to tools and machines…I earned a living most of my life as a clockmaker specializing in the restoration of antique clocks. These days it is difficult/impossible to acquire high quality tools at a reasonable price. This CDI torque screwdriver is a rare exception in a world of shoddy tools that simply don’t measure up to any standard of quality. I believe the reviewer that downgraded this $100+ tool should look toward the Much More Costly torque devices that are intended for 24/7 usage. Under “normal” use I would expect this tool to last the craftsman a lifetime.Kudos to Amazon for making this reliable, high quality tool available to the workman at a good price.
David S. –
Excellent Micro Adjustable Torque ScrewdriverWhen considering this tool to purchase – it should be noted that when you are using a tool 24 hours on all shifts (sounds like 24×7) – you also are probably using it more than just once each hour.Once each hour would result in a 5,000 use cycle occurring every 208 days. However, in a busy industrial environment – using this tool just twice each hour – results in 5000 cycles every 104 days. Essentially – every 90 days. You also have the fact that using any torque wrench in the upper or lower ends – decreases the life of said wrench. All of this information is readily available from CDI. The following are quotes from them as to the care of their tools and torque wrenches in general:”To determine which torque wrench capacity is best suited for an application, many factors must be considered. However, as a recommendation, use a torque wrench in the middle 50% of the overall capacity of the tool. This will result in longer tool life, ease of use for the operator and increased accuracy from “clicker” type torque wrenchesTorque wrenches should be “exercised” a minimum of three times at 100% of full scale before useTorque wrenches will last longer if reasonable care is taken. Always unwind handle to the lowest setting after each use. Do not attempt to lubricate the internal torque mechanism. Clean torque wrench by wiping, do not immerse. The wrench should be sent to a qualified calibration lab once every year or every 5000 cycles for re-calibration”The instructions for this specific micro adjustable torque screwdriver (401sm) – state to have it calibrated and gone through every 5,000 cycles – or one year – whichever comes first. ALL torque wrenches have useful life cycles. CDI is at least being honest – and putting in print – the life cycle and service requirements.If you use this tool only 3 times each hour – at various settings – you should have it serviced every 69 days minimum. This is just part of the cost of doing business and quality work.I have owned this tool for quite a number of years (just purchasing another one); and find it extremely adequate for small screws, and misc. fasteners without a lot of mass – which require a torque value; etc. With a very long life span. Easy to grip, very visible (bright blue), and easy to use. An excellent tool with excellent cditorque com support.
but I’m glad I went with this oneThis was a little more spendy that I wanted to go on a screwdriver that I will only use occasionally on my rifle scope, but I’m glad I went with this one. My other option was the wheeler F.A.T. wrench, but as the name suggest the handle is rather fat and I wanted a slimmer one to fit in my field bag better and this does that quite nicely. The handle is about a 1 and 5/8 inch wide and weighs 10.8 ounces. The torque range is listed from 5-40 inch pounds but it can be adjust from 3-48 inch pounds, but I doubt they’ll guarantee its accuracy outside the stated range. It is adjustable in 0.5 inch-pound increments and very securely locks into whichever half pound increment you choose. The way it works is you pull out the wheel on the top and rotate to the desired torque setting. One full turn of the wheel is 5 inch-pounds and the scale on the side of the handle body reads which 5 pound range you are on. So that in theory if the scale is between 10 and 15 and the dial is on 2.0 then you’ve got 12 inch pounds. And also in theory when the dial is on zero the slider on the scale should be exactly on one of the 5 pounds marks, but it is not. It is close enough to one or the other so that it is not ambiguous which one its supposed to be, but for the high price of this I would have expected that to be right on. But all in all this is very good tool and that is only a minor complaint.
High Quality ToolI bought this to mount a rifle scope onto my AR15. From extensive researches, I narrowed down my selection to this CDI 401SM (it’s basically a Snap-on tool) and the Wiha TorqueVario-S screwdrivers. Both got very good reviews, but the Wiha is $10 cheaper. I ended up choosing this CDI screwdrivers due to the fact that it’s made in the USA, more compact looking, and the best of all is that I don’t need a second tool to adjust the torque whereas with the Wiha you need a SEPARATE wand that you have to insert into the main screwdriver and crank it to the desired torque level. All I have to do with this CDI tool is to pull the adjustment cap on the bottom out and rotate it to the desired torque level. I just don’t want to kick myself in the head for losing that second-piece adjustment tool or run around looking for it everytimes I need to adjust the torque on the Wiha. Plus, the Wiha includes an extension that does NOT house 1/4″ bits. In order for it to accept the normally used (in the USA) 1/4″ bits , you have to chip out another $12 for the right size extension. So….it’s pretty much a no brainer for me to pick this CDI Torque screwdriver for the reasons above.The product arrived well packaged with a calibration certificate. The screwdriver itself looks beautiful, high-quality, strong, and fits my hand nicely. Also, the indicating window is clear and easy to read. I’m completely satisfied with this purchase and feel more confident whenever I work on my RC helicopters or mounting an expensive scope (I mean REALLY expensive) on my rifle. Thanks to Amazon and Snap-on!
Quality precision toolQuality construction and precision define this tool.
Pilot Residential –
Works as advertised- though for me the initial turns on …Works as advertised- though for me the initial turns on a new torque setting seemed to take a few runs before it starts clicking at what feels to be the right setting. Also after numerous changing between the 10 and 15, the “0” mark no longer lined up with the main number, though after a few more installs, then I could reset it back to zero. A few quirks but it is durable and I won’t be trading it in any time soon.
J. Boehler –
QualityGood quality torque wrench.
steve snider –
Does not work properly!The slide does not line up with the pinter so it is impossible to know how much torque you are going to apply. I have an older red version of this that works. wished I would have just had it calibrated and not ordered a new one. I am now having a difficult time with Snap On to get it warranted and it is brand new never used. Amazon will not warranty it because the time that I purchased it and the first time I went to use it has expired.