Snap-on QJRXSM10A Flare Nut Head, 10 mm 6-Point Slotted Ring, J Shank, 33 ft-lb

Description

Brake, lube and instrument lines on metric equipment often end in 10 mm tube nuts. Those nuts are small, so an open-end wrench can round them. The Snap-on QJRXSM10A flare nut head wraps the hex with a slotted 6-point ring on a J-shank (0.425 in) body. Its maximum recommended working torque is 33 ft-lb, roughly 44.7 N·m.

Small dimensions on the QJRXSM10A

CAT1500i lists a 20 mm outside diameter and an 8 mm head depth for this head. So it can slide between lines that run close together. Its center sits 2.50 in from the retaining pin, like every QJRXSM head. In addition, the 6-point ring bears on the flats, which suits brass and thin-wall nuts.

J bodies that suit the QJRXSM10A 33 ft-lb rating

• QC1P300 preset, 60-300 in-lb (6.8-33.9 N·m): its whole scale sits under the head rating.
• QD2IN50A dual-range, 10-50 N·m: hold the setting at or below 44.7 N·m.
• QC2I75 adjustable, 5-75 ft-lb: usable, but cap the setting at 33 ft-lb.

QC bodies hold ±4% clockwise between 20 and 100% of their scale, according to Snap-on. Therefore a 25 ft-lb line nut reads best on a body whose band centers near that value.

A brake line routine with the Snap-on QJRXSM10A flare nut head

First, run the tube nut down by hand to avoid cross-threading. Next, slip the QJRXSM10A slot over the line and seat the ring on the hex. Then pull the body smoothly until it signals. Finally, mark the nut so the next check is quick. Always confirm the hex size first, because some lines use 11 mm nuts instead.

Protecting the slot of the Snap-on QJRXSM10A flare nut head

A slotted ring this small can spread if it serves as a breaker bar. Snap-on also states that its torque tools should not break fasteners loose. So loosen seized nuts with a plain flare wrench, and keep the QJRXSM10A for final tightening. Wipe the slot after each job, then store the head in a tray.

Ask for a QJRXSM10A quote

SMK Vietnam lists the head for its partner Lost in HCM, which supplies it and writes the price. Tell the team your J body and the line torque, then request a quote from Lost in HCM. Compare other sizes under torque wrench heads and adaptors, or contact SMK Vietnam.

QJRXSM10A sizing FAQ

Does Snap-on offer the 10 mm size on a Y shank?

No. CAT1500i shows a dash in the Y column at 10 mm, so the QJRXSM10A is the only choice at that size.

Which metric heads sit next to the QJRXSM10A?

The QJRXSM9A covers 9 mm at 25 ft-lb. Above it, the QJRXSM11A covers 11 mm at 42 ft-lb.

Do the UK brochure and CAT1500i agree on this head?

Yes. The UK brochure prints 400 in-lb, which equals about 33 ft-lb, with the same 20 mm O.D. and 8 mm depth.