Description
An adjustable driver is only useful if the setting stays where you put it. The Snap-on QDRIVER4A torque screwdriver uses a push-lock knob to hold its value between jobs. It also has a 1/4-inch square drive with a pin that keeps the socket in place.
Setting it in three moves
Snap-on keeps the process simple. First, pull the knob out. Next, turn it to the torque you need on the easy-to-read scale. Then push the knob back in to lock the setting. Because the lock engages by hand, an operator cannot bump the value by accident while working.
This matters on mixed lines, where one tool may move between stations. A supervisor can set and lock it, and the operator just drives.
Built-in protection and accuracy
- Clutch freewheels 90 degrees when it reaches the set torque.
- Rated within ±6% from 20% to 100% of full scale.
- Works in the clockwise direction only.
- Pin holds the socket on the square drive.
- Tri-lobe, textured grip that stays put on a flat surface.
Jobs for the Snap-on QDRIVER4A torque screwdriver
Snap-on lists fuel pressure regulator brackets and fuel filter brackets among the target jobs for this driver family. Similar small bracket work shows up across motorbike, car and generator assembly. In addition, service teams use this kind of driver on sensor mounts and electrical connectors.
About the range
We have not verified the exact torque range of the QDRIVER4A on an official Snap-on page. So we leave the number out here rather than guess. Lost in HCM confirms the range in its quote, and you can then match it to your spec sheet.
Keeping it accurate
Unlock and wind the setting down before you store the driver. Also keep it in a drawer or case, away from heavy tools. Finally, test it on a torque tester at set intervals, and book calibration as your quality system requires.
Request your quote
SMK Vietnam lists the Snap-on QDRIVER4A torque screwdriver for our partner Lost in HCM, who supplies it in Vietnam. To get a price, request a quote from Lost in HCM. You can also compare more torque screwdrivers or contact SMK Vietnam. Snap-on’s range is on snapon.com.
Common questions
How do I change the setting on the QDRIVER4A?
Pull the knob out, turn it to the new value, then push it back in to lock it.
Will the setting drift during use?
The push-lock knob holds the value during work. Still, check the driver on a tester from time to time.
Does it come with a calibration certificate?
Ask Lost in HCM. They confirm what documents ship with the driver.
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