Description
Small tube nuts do not always mean small torque. A 5/8 in nut on a steel hydraulic line can call for more than a light J body comfortably gives. The Snap-on QYRX20A flare nut head handles that case. It pairs a 5/8 in, 12-point ring with the larger Y shank, and Snap-on rates it at 79 ft-lb.
Ratings and fit of the QYRX20A
- Opening: 5/8 in, 12-point, solid slotted ring.
- Shank: Y (0.560 in).
- Maximum recommended torque: 79 ft-lb, about 107 N·m.
- Pin to fastener center: 3.00 in, the QYRX series figure.
Snap-on’s US catalog and UK brochure both give this rating, and the Lost in HCM listing matches.
Why a Y shank for a 5/8 in nut
Snap-on’s J click bodies stop near 75 ft-lb, which sits just under this head’s limit. A Y body, by contrast, reaches well past it. So the Snap-on QYRX20A flare nut head lets you work across the full rated range without pushing a small body to its top end. For lighter specs, on the other hand, a J head such as the 6-point QJRXS20A reads finer.
Lines and fittings at 5/8 in
On many 37-degree JIC systems, the -5 nut for 5/16 in tube measures 5/8 in. Many 1/4 in refrigerant flare nuts use 5/8 in too, while some use 11/16 in. Also, a 7/16 in hex cap screw has a 5/8 in head. As always, measure across flats before you choose the head.
Y bodies that cover 79 ft-lb
- CTECH2Y100A ControlTech, 5-100 ft-lb, with a digital readout.
- QD3IN200B dual range, 37-140 ft-lb, with no length math for this head.
- QC3P150 preset, 30-150 ft-lb, for one value on a line.
Neighbor sizes in the QYRX range
The QYRX18A covers 9/16 in at 67 ft-lb, while the QYRX22A covers 11/16 in at 92 ft-lb. In addition, Snap-on offers ratcheting 5/8 in heads, the RTWH40JSL and RTWH40YSL, for nuts that need many turns. Those sit farther from the pin, however, so they need a setting check.
Care for the QYRX20A
Wipe hydraulic oil off the ring after use. Then check the slot for spread, since a wide slot loses grip on a small nut. Finally, keep the body on its recalibration schedule.
Ordering the Snap-on QYRX20A flare nut head
SMK Vietnam lists the QYRX20A, and our partner Lost in HCM supplies it and issues the quote. Give your Y body model and the line spec. Then request a QYRX20A quote from Lost in HCM. Browse the torque wrench heads and adaptors range for other sizes, or contact SMK Vietnam.
QYRX20A FAQ
Can I use the QYRX20A below 20 ft-lb?
Yes, on a CTECH2Y100A, which reads from 5 ft-lb. Click bodies with a higher floor will not reach that low.
Is there a J-shank 12-point 5/8 in head?
Snap-on’s US catalog lists the QYRX range in Y only. For J bodies, look at the 6-point QJRXS20A.
What are the ring dimensions?
Snap-on sources give slightly different figures. So ask Lost in HCM if your clearance is tight.
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