Description
An 18 mm tube nut on a hydraulic line often needs more torque than a small wrench can give. The Snap-on QYRXSM18A flare nut head answers that need. It moves the 18 mm 6-point flare nut grip onto a stronger Y-shank body, so the joint can reach a higher set value.
Snap-on QYRXSM18A flare nut head specifications
| Size | 18 mm, 6-point |
|---|---|
| Shank | Y (0.560 in) |
| Maximum recommended working torque | 94 ft-lb (about 127 N·m) |
| Outside diameter | 30 mm |
| Head depth | 12 mm |
| Fastener center to retaining pin | 3.00 in (QYRXSM series) |
QYRXSM18A or the J-shank QJRXSM18A?
Snap-on makes this size in both shanks. The J-shank QJRXSM18A tops out at 60 ft-lb. In contrast, this Y-shank head carries 94 ft-lb. So if your fitting spec sits between those two values, the Y head is the one to buy. If it sits below 60 ft-lb, a J body and head may be lighter to handle.
Setting up a Y-shank body for the QYRXSM18A
On SMK Vietnam, Y-shank options include the QD3IN200B, which reads 37-140 ft-lb. With this head, though, keep its setting at 94 ft-lb or below. The QC3P150 and QC3P200 preset bodies also fit, as does the CTECH2Y100A ControlTech wrench. Because the head keeps the 3.00 in Y spacing, Snap-on’s dual-range QD bodies need no adjustment math.
Where the QYRXSM18A earns its keep
- Hose and tube fittings on presses and injection molding machines.
- Hydraulic lines on forklifts and mobile plant.
- Process tubing on skids and test rigs.
For the next size up, Snap-on lists the 19 mm QYRXSM19A at 104 ft-lb.
Looking after the QYRXSM18A
A clean jaw grips better, so wipe off oil and thread sealant after each job. Then inspect the slot edges for cracks or spreading. Also keep the body on a periodic recalibration plan, as Snap-on advises.
Order the QYRXSM18A
Lost in HCM supplies this flare nut head and prepares the quote, and SMK Vietnam lists it for them. Include your body model and fitting torque. Next, request a QYRXSM18A quote from Lost in HCM. You can also view more torque wrench heads and adaptors, browse Y-shank torque wrenches, or contact SMK Vietnam.
Snap-on QYRXSM18A flare nut head FAQ
Why choose the Y version over the J version?
Capacity. Snap-on rates the Y-shank QYRXSM18A at 94 ft-lb, against 60 ft-lb for the J-shank QJRXSM18A.
What size is the head body?
The catalog lists a 30 mm outside diameter and a 12 mm head depth.
Can it go on an X-shank body?
No. It has a Y (0.560 in) shank, so it needs a Y-shank body.
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