Description
A clutch screwdriver tells you when it reached its setting. A dial driver tells you what the screw actually received. The Snap-on TQS2.5AC torque driver belongs to the second group. It is a Torqometer basic model with a U.S. scale and a single needle that moves as you turn.
Snap-on TQS2.5AC torque driver specifications
Snap-on’s Torqometer table lists the TQS2.5A basic model as follows:
| Item | TQS2.5A |
|---|---|
| Range | 480 in-oz / 30 in-lb |
| Increments | 12 in-oz / 1 in-lb |
| Length | 7-3/4 in |
| Drive | 1/4 in |
| Accuracy class | Standard 2% |
| Case | PB47 storage case |
In the same catalog, a C at the end of a Torqometer stock number marks the version supplied with a certificate of calibration. The Lost in HCM listing calls this item the version “with chart”, so ask them to confirm the paperwork.
One needle, live reading
Snap-on defines a basic model as one needle, while follow-up models carry two. So the TQS2.5AC shows torque only while you apply it. That suits slow, steady checks where the technician watches the dial. However, if you need the peak value held after release, look at the follow-up TQS2.5FUA instead.
Jobs for a 30 in-lb dial driver
- Auditing power screwdrivers on an assembly line.
- Checking breaking-away torque on finished products.
- Training new staff to feel the right load.
- Verifying fixture and jig screws during setup.
For example, a QA technician can tighten a sample screw with the TQS2.5AC and compare the reading with the work instruction.
Standard or stubby?
The TQS2.5AC uses the standard 7-3/4 in body, which gives a good grip for controlled turning. Where space is short, Snap-on also lists a stubby TQSS2.5A at 5-1/4 in with the same range. Then again, a longer handle is usually easier to read and steady.
Caring for your Snap-on TQS2.5AC torque driver
Store the Snap-on TQS2.5AC torque driver in its PB47 case when it is not in use. Also, never push it past full scale, and avoid drops that can shift the needle. Finally, check it on a torque tester at the interval your quality plan sets.
Get the TQS2.5AC through Lost in HCM
SMK Vietnam lists this driver for our partner Lost in HCM, who supplies it and gives quotes. To get a price, request a quote from Lost in HCM and state the quantity you need. You can also browse other torque screwdrivers, visit snapon.com or contact SMK Vietnam.
TQS2.5AC questions from QA teams
What does the C at the end of TQS2.5AC mean?
In Snap-on’s catalog, adding C to a Torqometer stock number denotes the version with a certificate of calibration.
Basic or follow-up: which do I need?
Choose basic for live readings. Choose follow-up when you want a second needle to hold the peak.
Is there a shorter version?
Yes. Snap-on lists the stubby TQSS2.5A at 5-1/4 in with the same 30 in-lb range.
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