Description
European and older Japanese machines often use 22 mm nuts on M14 threads, because DIN 934 and the old JIS table set that size. Many DIN 2353 tube fittings also carry 22 mm nuts. The Snap-on QYOM22A open end head fits both on a Y-shank (0.560 in) torque body.
22 mm tube nuts and the QYOM22A
Under ISO 8434-1, the 12L and 10S tube nuts share a 22 mm hex. Those nuts sit on a pipe, so a socket cannot pass over them. The Snap-on QYOM22A open end head slides onto the flats beside the tube instead. As a result, a fitter can bring a pressure line to the maker’s value without opening the run.
Y bodies that stay under the QYOM22A limit
Snap-on’s catalog and its UK brochure print different maximum working torques for this head. Even so, two Y bodies top out below both figures. The QD3IN200B adjusts from 37 to 140 ft-lb, and the QC3P150 preset covers 30 to 150 ft-lb. However, the QC3P200 runs to 200 ft-lb, so cap it at the limit Lost in HCM confirms.
Choosing the Snap-on QYOM22A open end head over other shanks
Snap-on’s 22 mm row also lists the QJOM22A and the QXOM22A, with no Z jaw. Its J sibling suits light values on short bodies. By contrast, the X head needs an X body that starts near 60 ft-lb. So the Y head covers the middle ground, where much hydraulic and frame work sits.
Measure first: 21 or 22 mm
ISO 4032 M14 nuts use 21 mm, not 22 mm. So a plant with mixed machines may need both sizes. Check a nut with a caliper, and order the QYOM21A if it reads 21 mm. The two books also print different widths for the QYOM22A, so ask for the current size if space is tight.
Asking Lost in HCM for the Snap-on QYOM22A open end head
Lost in HCM supplies this head and handles pricing, while SMK Vietnam lists it for them. Request a quote from Lost in HCM and mention the fitting series or nut standard. The 21 mm ISO jaw sits under torque wrench heads and adaptors, and you can contact SMK Vietnam for sizing help.
DIN and tube-nut FAQ: QYOM22A
Does the QYOM22A fit a 12L compression nut?
Yes, a 12L nut under ISO 8434-1 has a 22 mm hex. Take the assembly method from the fitting maker, since some specify turns rather than torque.
Which pin distance applies to the QYOM22A?
It sits 3.00 in from the fastener center, as for every QYOM head. The wrench manual explains any correction for that length.
Can I use the QYOM22A on an X body?
No. The Y shank only fits a Y socket, so an X wrench needs the QXOM22A from the same row.
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