Snap-on QC1ETT400 Torque Tester, 1/4″ Drive, 40-400 in-oz (28-280 cN·m)

Description

Torque screwdrivers rarely get the attention that wrenches do, yet they set thousands of screws a day. The Snap-on QC1ETT400 torque tester gives them a proper check. Its range runs from 40 to 400 in-oz, which is 28 to 280 cN·m, through a 1/4-inch drive.

A range made for screwdrivers

Many adjustable and preset torque screwdrivers work in inch-ounces or low inch-pounds. So a 40-400 in-oz span covers a wide slice of them in one unit. For example, you can audit a whole shelf of drivers from an electronics line without changing testers.

Inside the Snap-on QC1ETT400 torque tester

This is part of the Snap-on ETT series of electronic testers. Each one also pairs an integral transducer with a sturdy housing. As a result, you can mount it on a wall, a bench or a fixture in almost any position.

• Accuracy better than ±1% of the indicated value, 10-100% of range.
• Peak mode to catch the moment a driver cams out or clicks.
• Track mode to watch the torque as it builds.
• Clockwise and counterclockwise testing.
• Dual English and metric scale.

Running a driver audit

Start by grouping drivers by their set value. Next, fit each one to the drive with a bit adapter and turn it slowly. Read the peak, then repeat a few times and average the results. Any driver outside your tolerance goes to the repair bin with a tag.

Plants that build control boards, small motors and sensors often audit drivers weekly. Meanwhile, labs and pilot lines check them before each new build.

Choosing between QC1ETT models

If your drivers sit below 40 in-oz, a lower-range Snap-on tester is a better fit. On the other hand, tools set in tens of inch-pounds belong on an in-lb model. Above all, match the range to the settings you test most.

Upkeep

In short, keep the unit clean, dry and fixed firmly. Also avoid knocks to the drive, since the transducer sits right behind it. Then book a periodic recalibration for the tester at an outside lab.

Request a quote

SMK Vietnam lists the Snap-on QC1ETT400 torque tester for our partner Lost in HCM, who supplies it. To get a price, request a quote from Lost in HCM. You can also compare torque testers and calibration systems or contact SMK Vietnam. The maker’s site is snapon.com.

Questions about the QC1ETT400

What is 40-400 in-oz in N·m?

Snap-on lists it as 28-280 cN·m, which equals 0.28-2.8 N·m.

Do I need an adapter for hex-bit drivers?

Yes. Hex-bit drivers need a bit adapter to fit the 1/4-inch square drive. Ask Lost in HCM which adapters they can add.

Is a calibration certificate included?

Ask Lost in HCM. They confirm the documents that ship with each unit.