Description
Many European machines use DIN M12 bolts, and those carry a 19 mm hex. The Snap-on IZ19IR9X12 insert ring fits that size on a compact 9 x 12 mm wrench. Its closed ring surrounds the nut, so the load spreads across all the corners instead of two flats.
The largest ring for 9 x 12 receivers
Snap-on’s 9 x 12 insert rings come in 10, 11, 12, 13, 14, 15, 17 and 19 mm. So the IZ19IR9X12 tops the range. For a 22 mm or larger ring, you must move up to a 14 x 18 wrench. If your nut measures 17 mm, then the IZ17IR9X12 is the step down.
Ring or OE at 19 mm?
Snap-on also offers the IZ19OE9X12, a 19 mm OE insert on the same fitting. Choose the IZ19IR9X12 when you can drop it over the nut from above. However, an OE head can reach a nut on a tube or rod, where a ring cannot pass. Pick the style that matches how the joint is built.
Wrenches for the Snap-on IZ19IR9X12 insert ring
Any 9 x 12 receiver takes this ring. On SMK Vietnam, that means the ControlTech CTECHAN135A, CTECHAN30A and CTECHANM30. For M12 work, the CTECHAN135A makes the most sense, since it reads 6.8 to 135 N·m. The two 30 N·m models, by contrast, suit only light specs on this size. Also remember to set the ControlTech head-length factor for the ring before you tighten.
Snap-on does not print a working torque for its insert rings. So if a 19 mm joint needs more than 135 N·m, switch to the 14 x 18 system and the IZ19IR14X18.
Where a 19 mm ring helps
- DIN M12 bolts on conveyors, frames and machine guards.
- Motor and pump mounting bolts on packaged equipment.
- Repeat assembly stations where a closed head speeds up seating.
In these jobs, the Snap-on IZ19IR9X12 insert ring lets a light wrench cover a size that often calls for a heavier tool.
Care for the IZ19IR9X12
Wipe the fitting before each swap, so it locks square. Next, check the ring for cracks or spread points after a hard shift. In addition, never use the wrench to free a stuck bolt. Finally, recheck the wrench on a set calibration cycle.
Order the Snap-on IZ19IR9X12 insert ring
Lost in HCM supplies this ring and writes every quote, while SMK Vietnam lists it. Tell them your wrench model, so they can confirm the 9 x 12 fit. Then request an IZ19IR9X12 quote from Lost in HCM. See other sizes under torque wrench heads and adaptors, or contact SMK Vietnam if the fit is unclear.
IZ19IR9X12 buyer questions
Is there a 9 x 12 ring larger than 19 mm?
No. The 9 x 12 ring range ends at 19 mm. Larger rings use the 14 x 18 fitting.
Which wrench suits M12 work with this ring?
The CTECHAN135A, because its range reaches 135 N·m.
Does it fit a Y-shank click wrench?
No. Round-shank Q-series bodies take Q heads, not IZO inserts.
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