Description
No common ISO bolt uses a 9 mm hex, so the size tends to surprise people. Still, it turns up on maker-specific screws, small unions and adjuster nuts on imported machines. The Snap-on IZ9OE9X12 torque insert covers it with a 9 mm OE head on the compact 9 x 12 mm fitting. That way, a calibrated wrench handles the odd nut instead of a loose spanner.
Where a 9 mm hex shows up
ISO hex parts jump from 8 mm on M5 to 10 mm on M6. A 9 mm reading therefore points to a special part rather than a standard bolt. For example, some small fittings, set-screw lock nuts and parts on older or regional designs use it. So confirm the size with a caliper, and keep the IZ9OE9X12 for the joints that truly need it.
IZ9OE9X12 in Snap-on’s IZO table
| Size | 9 x 12 OE | 9 x 12 ring | 14 x 18 |
|---|---|---|---|
| 8 mm | IZ8OE9X12 | None | None |
| 9 mm | IZ9OE9X12 | None | None |
| 10 mm | IZ10OE9X12 | IZ10IR9X12 | None |
As the table shows, the IZ9OE9X12 is the only 9 mm insert Snap-on lists. Insert rings begin at 10 mm, and the 14 x 18 range begins at 13 mm.
Which receiver suits the Snap-on IZ9OE9X12 torque insert
Snap-on lists three ControlTech bodies with a 9 x 12 mm IZO/ISO receiver. The CTECHAN30A and the CTECHANM30 read 1.5 to 30 N·m. Meanwhile, the CTECHAN135A reads 6.8 to 135.0 N·m. Small 9 mm parts usually carry light values, so a 30 N·m body keeps the reading off the bottom of its scale. In addition, all of these models store a calibration factor for head length. Enter it for the Snap-on IZ9OE9X12 torque insert each time you fit it.
Habits that protect a small OE head
A 9 mm jaw has little metal to spare, so check it for spread at each tool audit. Next, wipe the 9 x 12 shank before every swap, because grit can stop it seating fully. Also never use the IZ9OE9X12 to break a nut loose, since Snap-on warns against it.
Quoting the Snap-on IZ9OE9X12 torque insert
Lost in HCM supplies this insert and prepares every quote, while SMK Vietnam lists it as a partner part. Tell them your receiver size and the joint value. Then ask Lost in HCM for an IZ9OE9X12 price. Browse torque wrench heads and adaptors for the 8 and 10 mm inserts, or contact SMK Vietnam.
Three IZ9OE9X12 questions
Is there a 9 mm insert ring?
No. Snap-on’s insert rings start at 10 mm, so the OE head is the only 9 mm style.
Does the IZ9OE9X12 fit a 14 x 18 receiver?
No. It needs a 9 x 12 mm receiver, such as the CTECHAN30A.
Which neighbors should I stock with it?
The IZ8OE9X12 and IZ10OE9X12 sit one size either side on the same fitting.
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