Impact wrench torque classes, honestly.
320 N·m — household
Car wheels, garden machine bolts, furniture frames. Most passenger cars leave the factory at 110–140 N·m.
380 N·m — shop
SUV wheels, small machinery, structural fasteners in timber and steel.
800 N·m — professional
Seized fasteners, tractor and small-vehicle lug nuts, industrial maintenance. Impact loosening is about hammer energy, not continuous twist — that is why the number is achievable on a battery.
Sockets
Impact-rated (black) sockets only. Chrome sockets harden and fracture under impact load — a shrapnel risk, not a warranty issue.
Frequently asked questions
How much torque to remove lug nuts?
Factory spec 110–140 N·m on most cars; 320 N·m breaks them loose, seized lugs need the 800 N·m class.
What does N·m mean on an impact wrench?
Newton-metres of impact loosening torque — measured under hammering load, not static twist.
Wholesale & private label welcome. Trial orders from 1 carton. Ask for the FOB price list — replies within 24 hours.