Description
Small screws fail in two ways: they shake loose, or they strip. The Snap-on QDRIVER3 torque screwdriver helps with both, because you dial a value from 3 to 15 in-lb and the clutch lets go at that point. It also takes any standard 1/4 in hex bit, so your current bit stock still works.
Snap-on QDRIVER3 torque screwdriver at a glance
| Type | Adjustable torque screwdriver |
|---|---|
| Range | 3-15 in-lb (34-169 N·cm) |
| Bit holder | Standard 1/4 in hex bits, magnetic retention |
| Clutch | Cam-over, free-wheels 90° at the set torque |
| Accuracy | ±6%, clockwise only |
| Length | 5-7/16 in |
These figures come from Snap-on’s UK torque brochure. In addition, the brochure describes a red anodized aluminum body, a stainless steel shank and a tri-lobe grip on the QDRIVER3.
Why a cam-over clutch helps on the line
A click tool only signals the target, so a hurried hand can still push past it. By contrast, the QDRIVER3 clutch free-wheels for a quarter turn once it reaches the set value. As a result, the operator feels a clear release, and the screw does not take extra load from that stroke. That suits new staff, long shifts and repeat work.
Where the QDRIVER3 fits in a plant
Lost in HCM files this driver under oil and gas, electrical and renewable energy work. In practice, a 3-15 in-lb band covers jobs such as:
- Terminal screws on breakers, relays and control panels.
- Covers and cable glands on junction boxes.
- Small brackets on inverters, meters and sensors.
- Dash and under-dash screws, which Snap-on also names as a typical use.
QDRIVER2, QDRIVER3 or QDRIVER4?
First, read the value on the drawing and convert it to in-lb. Then pick the model whose band holds that value well above its low end. Snap-on’s brochure lists the QDRIVER2 at 20-100 in-oz and the QDRIVER4 at 5-40 in-lb, so the QDRIVER3 sits between them. Also note the QDRIVER3A, which Snap-on’s industrial catalog lists with a 1/4 in square drive. Choose that model instead when you torque small sockets rather than bits.
Looking after a Snap-on QDRIVER3 torque screwdriver
Wind the Snap-on QDRIVER3 torque screwdriver back to its lowest mark at the end of each shift. Keep the driver away from hard drops, since the clutch is a precision part. Before the first job, check the release on a torque tester at two or three settings. After that, set a check interval in your own quality plan.
Requesting a QDRIVER3 quote
SMK Vietnam lists this tool for our partner Lost in HCM, which supplies it and prepares the quote. SMK itself does not stock, price or calibrate tools. So for QDRIVER3 price and lead time, send a quote request to Lost in HCM. You can also browse other torque screwdrivers, read about the brand on snapon.com, or contact SMK Vietnam.
QDRIVER3 questions
Does the QDRIVER3 work counterclockwise?
No. Snap-on gives its ±6% accuracy for the clockwise direction only.
Will my existing bits fit?
Yes, as long as they are standard 1/4 in hex bits. A magnet then holds the bit in place.
Is a calibration certificate included with the QDRIVER3?
The source listing does not say so. Ask Lost in HCM what paperwork comes with the offer.
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