Description
A torque body is only as useful as the heads in the drawer beside it. So this page treats the Snap-on QD3IN350A torque wrench body as the core of a kit. The body sets from 70 to 350 N·m on a dual scale, and it also takes X-shank heads.
Snap-on QD3IN350A torque wrench body: key data
| N·m scale | 70-350 N·m |
|---|---|
| ft-lb scale | 59-251 ft-lb |
| Increments | 2 N·m / 1.2 ft-lb |
| Shank type | X (0.735 in) |
| Length | 23 in (584 mm) |
| Accuracy (Lost in HCM listing) | ±4% |
The QD3IN350A shares its 23 in length with the QD3IN200B. However, it uses the thicker X shank, so plan a separate set of heads. In addition, Snap-on’s catalog notes that A-suffix models carry roll-marked tubes, which keep the scale readable for longer. Lost in HCM’s listing then adds the dual-scale label and ±4% accuracy.
Building a head kit for the QD3IN350A
Start with the joints you tighten most. Then pick one head per job type, and keep the kit small enough to stay tidy. For example, a typical X-shank kit might hold:
- A square drive ratchet head for your most common socket size.
- Open-end heads in the sizes that your hose and tube nuts use.
- A 12-point box-end head, since many bolts sit in a recess.
- A fixed square drive head, so crowfoot wrenches reach tight spots.
Check each head’s rating
Snap-on lists 240 ft-lb as the maximum working torque for its X-shank box-end heads. That equals about 325 N·m, so it falls short of the 350 N·m top of the body. For targets near the top, therefore, confirm the head rating before you set the scale.
Head length
On standard X heads, the fastener sits 4.50 in out from the retaining pin. Snap-on’s catalog says matched heads keep that spacing, so the scale needs no correction. With any other head, however, follow Snap-on’s head-length instructions.
Fleet and plant work for the QD3IN350A
- Wheel and suspension bolts on vans and light trucks.
- Forklift mast and counterweight hardware.
- Motor, pump and fan base bolts.
Each of these jobs uses a different value, which is why an adjustable body suits them. A preset body, by comparison, would tie one value to one station.
Request the Snap-on QD3IN350A torque wrench body
Supply runs through Lost in HCM, which also prepares the quote, and SMK Vietnam is the listing site. Snap-on’s catalog includes a calibration certificate and a molded storage case with this dual-range line, so check that both appear in the offer. With your head list ready, request QD3IN350A pricing from Lost in HCM. Or look at our other torque wrench listings, read about the brand on snapon.com, and get in touch with SMK Vietnam.
What buyers ask about the QD3IN350A
Does the QD3IN350A fit Y-shank heads?
No. It takes X-shank heads, which have a 0.735 in shank.
How fine are the steps?
The N·m scale moves in 2 N·m steps, and the ft-lb scale in 1.2 ft-lb steps.
Can SMK Vietnam calibrate it?
No. SMK Vietnam does not calibrate tools. Ask Lost in HCM about certificates, or use your usual calibration lab.
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