Description
Not every 15/16 in tube nut needs a heavy Y wrench. Brass unions and thin-wall fittings often call for modest values, and a short body reads those more finely. The Snap-on QJRXS30A flare nut head serves that work. It carries a slotted 6-point ring on the light J shank (0.425 in), so it passes over the tube and grips six flats.
QJRXS30A size and clearance
| Opening | 15/16 in, 6-point, slotted |
|---|---|
| Shank | J (0.425 in) |
| Outside diameter | 1-1/2 in |
| Head depth | 19/32 in |
| Pin to fastener center | 2.50 in (QJRXS series) |
CAT1500i, the UK brochure and the partner listing all agree on these sizes. So the QJRXS30A needs about 3/4 in of free space around the nut center. Its 19/32 in depth, meanwhile, decides whether it slips between a nut and a bracket.
Why the QJRXS30A rating stays blank
Snap-on’s catalog and its UK Torque Brochure print different maximum values for this J head. Because the two sources disagree, we state neither figure here. Instead, Lost in HCM confirms the limit with your quote. By contrast, both sources agree on the Y twin, the QYRXS30A, at about 146 ft-lb. Therefore firm steel fittings belong on that Y head, while the QJRXS30A covers the soft ones.
J bodies that pair with the Snap-on QJRXS30A flare nut head
- QD2IN50A dual scale, 10-50 N·m, read directly at the 2.50 in spacing.
- QD2IN100A dual scale, 20-100 N·m, for slightly firmer specs.
- QC2I75 adjustable, 5-75 ft-lb, with 0.5 ft-lb steps.
- CTECH1J240A ControlTech, 1-20 ft-lb, for very light brass work.
Pick the body whose range puts your value near its upper half. Then keep the setting at or below the head limit that Lost in HCM gives you.
A lube skid job for the Snap-on QJRXS30A flare nut head
Picture a lube oil skid with brass unions at 15/16 in, packed close to a pump. The values are low, the nuts are soft, and the lines block any socket. So the Snap-on QJRXS30A flare nut head slides over the tube, wraps all six flats, and a short J body finishes each joint. As a result, the brass keeps clean corners for the next service.
How Lost in HCM prices the QJRXS30A
Lost in HCM supplies the QJRXS30A and prepares the price, while SMK Vietnam lists it as a partner part. Tell the team your J body and the fitting value. Your request then goes through the Lost in HCM listing for the QJRXS30A. For the 7/8 in and 1 in J rings, look under torque wrench heads and adaptors; for general help, contact SMK Vietnam.
QJRXS30A: fit and rating queries
Why choose 6 points over 12 at 15/16 in?
Six points push on the middle of each flat. So soft or worn line nuts keep their corners under load.
Is there a Y-shank version of the QJRXS30A?
Yes, the QYRXS30A. Both Snap-on sources rate it at about 146 ft-lb.
How much room does the QJRXS30A need around the nut?
About 3/4 in from the nut center, half of its 1-1/2 in outside diameter, plus 19/32 in of depth.
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