One thing to know about torque wrenches: it’s actually more important that they are consistent rather than having absolute accuracy. (for the most part) why is this? If you have four bolts tightening down a handlebar into a stem, using a torque wrench correctly ensures consistent clamping load and avoids creating a stress point.
Whether those four bolts are at 8.86nm or 7nm is not usually a big deal. This is strictly speaking about bicycles, however, not aircraft or rockets :) there are a few bolts where an absolute clamp load on a single fastener is important: controls on a carbon bar. For my experience, though I have seen some bike shop mechanics reef on these (8-12nm) without consequence, even though the manual clearly states 4nm. I would do exactly what the manufacturer says here.
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One thing to know about torque wrenches: it’s actually more important that they are consistent rather than having absolute accuracy. (for the most part) why is this? If you have four bolts tightening down a handlebar into a stem, using a torque wrench correctly ensures consistent clamping load and avoids creating a stress point.
Whether those four bolts are at 8.86nm or 7nm is not usually a big deal. This is strictly speaking about bicycles, however, not aircraft or rockets :) there are a few bolts where an absolute clamp load on a single fastener is important: controls on a carbon bar. For my experience, though I have seen some bike shop mechanics reef on these (8-12nm) without consequence, even though the manual clearly states 4nm. I would do exactly what the manufacturer says here.