Description
A 15 mm hex sits between the ISO sizes for M8 (13 mm) and M10 (16 mm). So when one turns up, it usually belongs to a fitting, a sensor body or a special nut. The Snap-on QJXM15A box end head gives such parts a closed 12-point ring on the light J shank. As a result, a compact click wrench can set a small, recorded value from the side.
Snap-on QJXM15A box end head: J or Y shank?
The partner listing for this part names a Y (0.560 in) shank. However, Snap-on’s UK torque brochure places the QJXM15A in its J (0.425 in) column. A J shank will not lock into a Y body, and the reverse holds too. So ask Lost in HCM to confirm the shank in writing before you order. If your station runs a Y wrench, the brochure also lists a separate 15 mm Y ring, the QYXM15A.
QJXM15A sizes in the Snap-on brochure
| Opening | 15 mm, 12-point, closed ring |
|---|---|
| Shank | J (0.425 in), per the brochure |
| Outside diameter | 22 mm |
| Head depth | 10 mm |
| Pin to fastener center | 2.50 in (QJXM series) |
The two sources also print different maximum working torques for the QJXM15A. Therefore we leave the limit off this page. Instead, Lost in HCM confirms the figure with its quote, and every pull stays at or below it.
Light J bodies for a 15 mm fitting
- QC1I200: 40-200 in-lb on a 9-3/8 in tube, for small fittings in soft housings.
- QC2P75 preset: 5-75 ft-lb on an 11 in tube, so one value stays locked at a station.
- QD2IN50A: 10-50 N·m (9.2-35.0 ft-lb), handy when the job sheet is metric.
- CTECH1J240A: an electronic J body that reads from 1.0 to 20.0 ft-lb.
Each of these bodies reads to its own scale, not to the QJXM15A. For example, the QC2P75 can read above a light head limit, so lock its preset low.
Side room and height at 15 mm
Half of the 22 mm O.D. is 11 mm, so the ring needs about that much from the fastener center to the nearest wall. It also stands only 10 mm tall. That low profile slides under covers where a socket stack would stand too high. In addition, the 12 points re-seat every 30 degrees, which helps when the handle can swing only a short arc. With the QJXM15A, the fastener sits 2.50 in from the locking pin, the shortest reach among Snap-on’s metric rings.
Price and shank check for the Snap-on QJXM15A box end head
SMK Vietnam lists this ring for its partner, while Lost in HCM supplies it and prices each order. When you request a quote from Lost in HCM, give your J body model, the part you need to torque and the target value. Also ask for the shank and the limit in writing. Neighbor sizes sit under torque wrench heads and adaptors, or you can contact SMK Vietnam with a fit question.
Before you buy the QJXM15A
Will the QJXM15A lock into a Y-shank wrench?
No. A J shank needs a J body. If your wrench has a Y socket, look at the QYXM15A instead.
Why does this page show no torque rating for the QJXM15A?
The partner listing and Snap-on’s brochure print different limits. Lost in HCM confirms the right one with the quote.
Is a 15 mm hex a standard ISO bolt size?
No. ISO hex sizes jump from 13 mm for M8 to 16 mm for M10. So measure the part across the flats before you order.
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