Description
Camera modules, lenses and laser optics rely on screws that hold parts in exact alignment. The Snap-on TQSR2.5FUAC torque driver helps optics teams check those screws with a measured value. It is a Torqometer follow-up dial driver with a US scale and a newton meter scale. Its source name also says it comes with a calibration certificate.
Why optics teams measure screw torque
For example, too much torque can stress a lens barrel or shift an alignment. With too little, a mount can creep after a drop or a heat cycle. So optics engineers set torque windows and check them on sample parts. The TQSR2.5FUAC gives them a number on a dial, not just a clutch click.
Follow-up needle on the Snap-on TQSR2.5FUAC torque driver
The memory needle rides up with the main pointer and stays at the peak. That way, a technician can turn a screw under a microscope and read the dial afterward. Reset it before the next screw in the sample, because the old peak stays until you clear it.
Optics jobs for the TQSR2.5FUAC
- Lens mount and retainer screws on camera and sensor modules.
- Laser head and mirror mount screws in test rigs.
- Audits of screws that clutch drivers tightened at optics stations.
- Teardown checks on returned units.
In each case, the dual US and N·m dial matches drawings from either unit system.
Grade, drive and the double asterisk
Lost in HCM puts the TQSR2.5FUAC in its 1/4-inch drive torque driver group. Its accuracy category also reads Combination US/Newton Meter Reading/Standard 2% Accuracy, followed by two asterisks. The source does not explain that mark, so ask Lost in HCM what it means. Snap-on defines the Standard grade as 2% of reading from 20% of full scale to full scale. We found no Snap-on catalog entry for this C-suffix code, so its range stays off this page.
Bench care for a precision driver
Keep the Snap-on TQSR2.5FUAC torque driver on a padded mat, not loose on a metal bench. Also choose bits that match the screw drive exactly, since cam-out can scratch optical parts. Turn slowly and steadily, because a jerk can push the needle past the true value. Finally, recalibrate on your lab’s cycle and keep the certificate on file.
Order the Snap-on TQSR2.5FUAC torque driver
SMK Vietnam lists this driver for its partner Lost in HCM, the supplier in Vietnam. To price one driver or several for an optics line, request a quote from Lost in HCM. You can also compare torque screwdrivers, read about Snap-on at snapon.com, or contact SMK Vietnam.
Optics assembly FAQ
Can the TQSR2.5FUAC audit clutch driver work?
Yes. It reads the torque needed to move a screw that a clutch driver tightened, and the needle holds that peak.
What do the two asterisks in the category mean?
The source leaves the mark unexplained. Lost in HCM can clarify it in its quote.
Is a calibration certificate part of the supply?
The source name includes one. Ask Lost in HCM what the certificate covers.
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