Description
Electronics plants in Bac Ninh, Bac Giang and Hai Phong drive thousands of small screws per shift. Most go in with preset electric drivers, yet someone still has to prove those tools hit the value. The Snap-on TQS1A torque driver gives that person a direct dial reading up to 12 in-lb. It sits in the Torqometer U.S. reading family, with a 7-3/4 inch body and a basic dial.
Line audits with the Snap-on TQS1A torque driver
A process engineer sets a power driver, then needs a number to confirm it. So a common check is the mark test: draw a line across the screw head and the part, then tighten with the dial until the line just moves. Because Snap-on states its accuracy in both directions, the TQS1A also handles left-hand threads. Typical joints in this band include:
- Board-to-chassis screws on controller and power modules.
- Shield can and heat sink clamp screws.
- D-sub jackscrews and terminal block screws on test fixtures.
- Plastic housing screws where a stripped boss scraps the part.
TQS1A at a glance
| Item | TQS1A |
|---|---|
| Style | Standard length, basic dial |
| Range | 192 in-oz / 12 in-lb (about 1.36 N·m) |
| Increments | 4 in-oz / 1/4 in-lb |
| Length | 7-3/4 in |
| Storage case | PB47 |
Snap-on lists the range in ounce-inches and pound-inches, so drawings in either unit convert easily. Also, the 2% guarantee starts at 20% of full scale. On this dial, that means about 2.4 to 12 in-lb.
Where the TQS1A sits among its neighbours
Snap-on builds the same 12 in-lb row in three other forms. The stubby TQSS1A is 5-1/4 inches long for cramped housings. Meanwhile, the TQS1FUA and TQSS1FUA add a follow-up pointer that holds the peak. If your targets fall under 2.4 in-lb, step down to the 6 in-lb TQS050A. On the other hand, values near the top call for the 24 in-lb TQS2A.
Daily habits that protect the reading
Seat the bit fully before you load the screw, since cam-out spoils the number. Then turn smoothly and stop at the target, because the basic dial gives no click. After the shift, wipe the TQS1A and return it to its PB47 case. In addition, keep it out of the parts washer area and plan rechecks on your plant schedule.
TQS1A questions from process engineers
Can the Snap-on TQS1A torque driver hold a peak reading?
No. The basic dial only shows torque while you apply it. For a held peak, the follow-up TQS1FUA uses the same range.
Which unit should we write on the work instruction?
Use the unit on the customer drawing. The TQS1A range is listed as 192 in-oz or 12 in-lb, so either converts directly.
Is the TQS1A a click-type tool?
No. It is a dial indicating driver, so the operator watches the scale and stops at the value.
Pricing a Snap-on TQS1A torque driver for your line
Lost in HCM supplies this driver to factories in Vietnam and prepares every quote. To price one unit or a line set, request a quote from Lost in HCM. You can also browse other torque screwdrivers, check Snap-on data at snapon.com, or contact SMK Vietnam.
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