Description
M8 may be the most common bolt on an assembly line, and its hex measures 13 mm in both ISO and DIN tables. The Snap-on QJXM13A box end head turns a J torque body into an M8 tool with a full ring grip. Also, it slips around the bolt head where a socket and extension will not reach.
Snap-on QJXM13A box end head sizes
- 13 mm, 12-point closed ring.
- J shank, 0.425 in.
- 20 mm outside diameter and 9 mm depth.
- 2.50 in from pin to fastener center.
These sizes match in the Snap-on UK brochure and the partner listing. The ring therefore needs about 10 mm of room from the bolt center.
Preset or adjustable for an M8 station
| Body | Style | Range |
|---|---|---|
| QC1P300 | Preset | 60-300 in-lb |
| QC2P75 | Preset | 5-75 ft-lb |
| QC2I75 | Adjustable | 5-75 ft-lb |
| QD2IN50A | Dual scale | 10-50 N·m |
A preset body suits one value repeated all shift, because the operator cannot change it by accident. By contrast, an adjustable or dual-scale body suits rework benches with mixed specs. Either way, the Snap-on QJXM13A box end head locks in with one push of the pin.
Setting a value you can trust
However, Snap-on states QC accuracy only from 20% to 100% of full scale. For example, on a 75 ft-lb body that band starts at 15 ft-lb. So a QC2P75 set near 5 ft-lb works below it, and the QC1P300 gives a better reading there. In addition, the brochure and the partner data disagree on the QJXM13A’s maximum, so ask Lost in HCM to confirm it.
Line orders for the Snap-on QJXM13A box end head
SMK Vietnam lists this ring for Lost in HCM, which supplies it and returns the quote. First, say how many stations need the QJXM13A and which bodies they run. Then request a quote from Lost in HCM. See nearby sizes in torque wrench heads and adaptors, or contact SMK Vietnam.
Line questions about the QJXM13A
Which bolt does a 13 mm ring fit?
It fits M8 bolts and nuts to ISO or DIN, which share the 13 mm hex.
Can one ring serve several bodies?
Yes, any J body takes it. So you can move it between a preset and a dial body as the job changes.
What about Japanese M8 bolts with a 12 mm head?
In that case, use the 12 mm QJXM12A for those reduced-hex bolts.
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