Description
Some 17 mm nuts sit on a tube, a hose or a rod that passes straight through them. A closed ring cannot drop over those, so the Snap-on IZ17OE14X18 torque insert uses an open jaw instead. It locks into the larger 14 x 18 mm IZO/ISO receiver, which belongs to heavier bodies and firmer joints.
When the IZ17OE14X18 open jaw earns its place
- Tube nuts and unions on hydraulic or lube lines, where the pipe blocks a ring.
- Locknuts on threaded rods and adjusters that run through the hex.
- Fittings that must stay installed while you torque them.
In each case, the jaw slides onto the flats from the side. However, an open end touches fewer faces than a ring, so seat it fully and keep the pull square. If the top of the nut is clear, a closed ring gives the safer grip.
The heavy body behind the Snap-on IZ17OE14X18 torque insert
In CAT1500i, one ControlTech body carries the 14 x 18 mm receiver: the CTECHBN340A. Its scale runs from 17.0 to 340.0 N·m, and the body is 607 mm long before you add a head. Its built-in calibration factor handles the length change that any insert brings, so nobody needs to do sums by hand. In addition, the wrench keeps a time-stamped data trail, which helps when an auditor asks for torque records.
Light 17 mm joints and the small fitting
Every Snap-on wrench carries its stated accuracy only between 20 and 100% of full scale. On the CTECHBN340A, that band starts at 68 N·m. So a modest 17 mm value reads better on a compact 9 x 12 body. For that case, Snap-on offers the IZ17OE9X12 open end for the CTECHAN135A. Keep the IZ17OE14X18 for jobs that sit well up the scale of the large body.
Neighbors of the IZ17OE14X18 on the open-end list
The large-fitting open ends run 13, 14, 15, 17, 18, 19, 22, 24, 27, 30, 32 and 36 mm. Notice that 16 mm is missing, so the next step down from this jaw is 15 mm. Measure the hex with a caliper before you order, because a 17 mm jaw on a 16 mm nut will round it. For example, DIN 934 gives M10 a 17 mm hex, while ISO 4032 uses 16 mm.
Price and supply of the Snap-on IZ17OE14X18 torque insert
Lost in HCM supplies this insert, and SMK Vietnam lists it as a partner product. Tell them the body you run and what the jaw must reach around. Then request a quote from Lost in HCM. Other IZO parts sit under torque wrench heads and adaptors, and SMK Vietnam can help with sizing.
Open-jaw questions on the IZ17OE14X18
Is there a 17 mm ring for the same receiver?
Yes. CAT1500i lists the IZ17IR14X18 insert ring for nuts with a clear top.
Should I use this jaw to crack a seized nut?
No. Snap-on warns against breaking fasteners loose with its torque tools. Free the nut with a plain wrench first.
Which smaller open end fits the 14 x 18 receiver?
The next size down is the IZ15OE14X18, because the large-fitting list has no 16 mm jaw.
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