Description
A 16 mm tube nut on a hydraulic line often needs more torque than a light wrench can give. The Snap-on QYRXSM16A flare nut head covers that job on a Y (0.560 in) shank. Its slotted 6-point ring slips over the tube, then grips the nut on its flats. As a result, the fitting keeps its corners while you reach the set value.
QYRXSM16A catalog figures
- Opening: 16 mm, 6-point flare nut ring
- Shank: Y (0.560 in)
- Maximum recommended working torque: 75 ft-lb (about 102 N·m)
- Outside diameter: 27 mm; head depth: 11 mm
- Retaining pin to fastener center: 3.00 in (QYRXSM series)
Why the Y shank matters at 16 mm
Snap-on also lists a J-shank twin, the QJRXSM16A, at the 2.50 in spacing. However, its two catalogs disagree on that head’s rating, so ask before you pick it for heavy work. The QYRXSM16A, by contrast, shows a clear 75 ft-lb limit in CAT1500i. That margin suits larger hydraulic and compressor fittings. So if your team already runs Y bodies, this head avoids a second wrench.
Step sizes beside the Snap-on QYRXSM16A flare nut head
| Head | Opening | Limit, ft-lb | O.D. / depth, mm |
|---|---|---|---|
| QYRXSM15A | 15 mm | 71 | 26 / 10 |
| QYRXSM16A | 16 mm | 75 | 27 / 11 |
| QYRXSM17A | 17 mm | 83 | 29 / 11 |
Each step adds a few ft-lb and a little bulk. Therefore, measure the tube nut first, then check the space around it.
Y bodies that pair with the QYRXSM16A
The QD3IN200B dual-range body reads 37-140 ft-lb on a Y shank, so 75 ft-lb sits well inside its scale. The QC3P150 and QC3P200 preset bodies also use a Y shank. In addition, the CTECH2Y100A electronic wrench covers 5-100 ft-lb on the same shank. Whatever the body, keep the setting at or below the head limit. Also, never use the wrench to crack a seized fitting loose.
Using the Snap-on QYRXSM16A flare nut head on installed lines
First, feed the slot over the tube and seat the ring fully on the nut. Next, hold the wrench square to the line so the ring cannot ride up. Then pull smoothly until the body signals, and stop. Finally, wipe off hydraulic oil before storage, because a slick ring can slip on the next job.
Buying the QYRXSM16A in Vietnam
Lost in HCM supplies this head, while SMK Vietnam lists it for buyers. Name your wrench body and the fitting torque, so they can confirm the match. When ready, ask Lost in HCM for a QYRXSM16A quote. You can also see torque wrench heads and adaptors, read the Snap-on site, or contact SMK Vietnam.
QYRXSM16A questions
What is the 75 ft-lb ceiling in N·m?
About 102 N·m. Snap-on prints the limit in ft-lb, so the N·m figure is a conversion.
Can I swap it onto a J-shank body?
No. The QYRXSM16A has a Y (0.560 in) shank. A J body needs the QJRXSM16A instead.
How deep is the 16 mm flare ring?
Snap-on lists an 11 mm head depth and a 27 mm outside diameter.
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