Description
Refrigeration and instrument lines on 1/4 in tube often carry a 5/8 in flare nut. On a Y-shank torque body, the Snap-on QYRXS20A flare nut head holds that nut on six flats. Its slotted ring drops over the tube, so it reaches nuts a socket cannot. It suits stations that keep Y wrenches for every line size.
Size data for the Snap-on QYRXS20A flare nut head
- Opening: 5/8 in, 6-point, slotted ring.
- Shank: Y (0.560 in).
- O.D.: 1-3/32 in, in CAT1500i, the UK brochure and the listing.
- Head depth: 7/16 in, in CAT1500i and the listing.
- Fastener center to retaining pin: 3.00 in, as for all QYRXS rings.
With that O.D., the ring needs a little over half an inch of clearance from the nut center. Its shallow depth also helps between stacked fittings.
Why the QYRXS20A limit stays open on this page
CAT1500i and the partner listing print one maximum working torque for this ring. The UK torque brochure, however, prints a slightly higher one. We cannot tell which is current, so we publish neither. Both figures sit below 80 ft-lb, and that still guides the body choice. Ask Lost in HCM to confirm the QYRXS20A limit with your quote.
Capping Y bodies for the QYRXS20A
| Y body | Range | What to do |
|---|---|---|
| CTECH2Y100A | 5-100 ft-lb | Program the target below the confirmed figure |
| QD3IN200B | 37-140 ft-lb | Use only the lower part of the scale |
| QC3P150 preset | 30-150 ft-lb | Lock the preset under the confirmed limit |
Every Y body here can pass the ring limit. Therefore write the cap on the job card for each one. If your joints sit low, the J twin, the QJRXS20A, may suit a light J body better than the QYRXS20A.
16 mm nuts and the QYRXS20A
5/8 in equals 15.88 mm, so the ring sits close to a 16 mm hex without matching it. For metric work, Snap-on lists the QYRXSM16A, a 16 mm Y ring rated 75 ft-lb in both catalogs. Its O.D. is 27 mm and its depth 11 mm. So keep the QYRXS20A for inch nuts and the metric ring for 16 mm fittings.
A cold room service case for the Snap-on QYRXS20A flare nut head
Picture a cold room evaporator with 1/4 in copper lines packed into a narrow cabinet. A technician fits the QYRXS20A to a CTECH2Y100A and enters the maker’s value. Then the slotted ring slips over the copper and turns the nut on six flats. As a result, the brass nut keeps its corners and the flare seals evenly. Check each nut first, because some makers use 9/16 in on this tube size.
Asking Lost in HCM for QYRXS20A pricing
Lost in HCM supplies the QYRXS20A and confirms its limit, while SMK Vietnam lists it. Send your Y body and the line value along with the part number. After that, request a quote from Lost in HCM and ask for the confirmed limit. Compare other rings under torque wrench heads and adaptors, or contact SMK Vietnam with any question.
Common questions on the 5/8 in Y ring
Why does this QYRXS20A page give no torque rating?
Snap-on’s catalogs print two different figures, both under 80 ft-lb. Lost in HCM confirms the correct one with the quote.
Does the QYRXS20A fit a J body?
No. It needs a Y receiver. The J ring at 5/8 in is the QJRXS20A.
Can the QYRXSM16A stand in for the QYRXS20A?
No. The QYRXS20A is a 5/8 in inch ring, and the QYRXSM16A is a 16 mm metric ring.
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