Description
Running a nut down a long stud with a fixed ring is slow work. You lift, reset and pull, again and again. The Snap-on QJBOERM19A box end head removes that step, because its 19 mm 12-point ring ratchets. So you can spin the nut down and then torque it in one setup.
QJBOERM19A details from the Snap-on catalog
- Opening: 19 mm, 12-point, ratcheting.
- Shank: J (0.425 in). Snap-on lists no Y version at this size.
- Outside diameter: 41.7 mm.
- Head depth: 12.9 mm.
- Fastener center to retaining pin: 2.50 in (QJBOER series).
Ratcheting or fixed: when to pick the Snap-on QJBOERM19A box end head
Choose the ratchet when the nut needs many turns before it seats. For example, it suits clamp bars, long studs and flange bolts with deep threads. On the other hand, a fixed ring has no mechanism and a slimmer ring. Snap-on’s 10° offset QJXBM19A is that option at 19 mm, with a printed 60 ft-lb rating. So if clearance is tight or you need a stated limit, compare both before you order.
Check the space around the nut for the QJBOERM19A
The 19 mm ratchet ring measures 41.7 mm across. That is much wider than the 34.5 mm of the 18 mm QJBOERM18A, for example. Therefore, check the gap to nearby walls, ribs or bolt heads first. The 12-point ring helps here too, since it can engage the nut at more angles.
J-shank bodies for the QJBOERM19A
On SMK Vietnam, the QD2IN50A and QD2IN100A dual-range wrenches take J heads. So do the QC2I75 and QC1I200 adjustable bodies and the CTECH1J240A electronic wrench. Its 2.50 in J spacing means the QD dual-range bodies need no adjustment calculation. Snap-on’s table prints no working torque for this head, however, so confirm the limit with Lost in HCM.
QJBOERM19A ratchet care
Grit in a ratchet can make it slip under load. So blow out chips and dust after dirty jobs, and keep the head in a closed tray. Leave seized nuts to a breaker bar, not the torque wrench. In addition, keep the body on Snap-on’s periodic recalibration cycle.
Order the Snap-on QJBOERM19A box end head
Our partner Lost in HCM supplies this head and quotes it, while SMK Vietnam lists it. Please name your J-shank body and target torque, so Lost in HCM can check the fit. Then request a QJBOERM19A quote from Lost in HCM. Or explore more torque wrench heads and adaptors, compare J-shank torque wrenches, or contact SMK Vietnam.
QJBOERM19A questions
Does Snap-on make a Y-shank QJBOERM19A?
No. At 19 mm, the ratcheting 12-point box end comes in J shank only.
How large is the head?
The catalog gives a 41.7 mm outside diameter and a 12.9 mm head depth.
What torque can it handle?
Snap-on’s ratcheting box end table does not print a figure. Lost in HCM can confirm it with your quote.
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