Description
Guitar and instrument factories in Vietnam fit tuners, pickguards, bridges and jack plates with small screws. Most of them bite into wood or soft plastic, so one heavy turn can strip the hole. The Snap-on TQS050FUAC torque driver lets a luthier or QA tech see a number instead of guessing. This one is a U.S.-scale Torqometer with a follow-up needle, and the Lost in HCM title adds a chart.
Instrument hardware and the Snap-on TQS050FUAC torque driver
A finished guitar carries dozens of screws, and each one affects feel, tuning or finish. For example, tuner screws that run too tight can crack the lacquer around the headstock. On the other hand, a loose bridge screw may buzz once the strings come up to pitch. With this dial, the tech turns to the value on the build sheet and reads the held needle. Then the result goes onto the instrument’s traveler before setup.
TQS050FUA row in catalog CAT1500i
| Item | TQS050FUA |
|---|---|
| Model type | Standard follow-up (2 needles) |
| Range | 96 in-oz / 6 in-lb |
| Increments | 2 in-oz / 1/8 in-lb |
| Length | 7-3/4 in |
| Drive group | Torqometer drivers, 1/4 in drive |
| Case | PB47 storage case |
Every figure above comes from the U.S.-reading driver chart in Snap-on’s CAT1500i catalog. Per that catalog, a C at the end of the stock number orders the version with a certificate of calibration. So the TQS050FUAC is the C version of the TQS050FUA. The partner’s title adds a chart, so ask which papers come in the box.
Why 1/8 in-lb steps suit wood screws
Fine steps matter when the gap between snug and stripped is small. Here the dial moves in 2 in-oz steps, so you can watch a screw seat. In addition, Snap-on guarantees this grade to 2% of the reading, starting at one-fifth of full scale. On this dial, that band opens at 1.2 in-lb, or about 19 in-oz. Therefore the Snap-on TQS050FUAC torque driver suits targets from there to 6 in-lb, roughly 0.68 N·m. For heavier neck plate screws, the 12 in-lb TQS1FUA gives more room.
Bench care for the Snap-on TQS050FUAC torque driver
Reset the follow-up needle before each screw, because the old peak stays on the dial. Also keep the bit square to the screw head, since a tilted bit cams out and spoils the reading. Finally, keep the driver in its PB47 case, away from the spray booth, and recalibrate it on your plant’s cycle.
Pricing the TQS050FUAC for your setup bench
Lost in HCM supplies this driver in Vietnam and writes each quote. When you know how many benches need one, request a quote from Lost in HCM. Other sizes sit in the torque screwdriver range, and snapon.com has the maker’s data. Or simply contact SMK Vietnam.
TQS050FUAC luthier bench FAQ
How do I pick a torque value for a wood screw?
Start from the hardware maker’s drawing or your own build standard. If neither gives a number, test sample screws in scrap stock with the TQS050FUAC. Then record the value that seats them firmly without stripping.
Why does Snap-on list the TQS050FUA range in two units?
96 in-oz and 6 in-lb are the same torque. Small screw specs often use inch-ounces, so the catalog gives both. Confirm the dial markings with Lost in HCM if your sheets use one unit only.
Is the TQS050FUAC a production screwdriver?
It works best as a check tool for setup, audits and first articles. For high-volume driving, a preset clutch driver is faster.
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