Mastercraft 1 2-in Drive Torque Wrench Manual _verified_ -

A 1/2-inch drive torque wrench is too large for inch-pounds. 100 In-lbs is only 8.3 Ft-lbs. Your Mastercraft likely does not register below 10 Ft-lbs. Use a 3/8-inch drive for small fasteners.

Store the wrench in its provided plastic case to prevent rust and impact damage. Warranty Information mastercraft 1 2-in drive torque wrench manual

Do not use this tool to loosen rusted or stuck bolts, as this can destroy the internal mechanism. A 1/2-inch drive torque wrench is too large for inch-pounds

| Task | Ft-Lbs | Nm (Rounded) | | :--- | :--- | :--- | | Lug Nuts (Car) | 80 - 100 | 108 - 135 | | Lug Nuts (Truck) | 120 - 150 | 163 - 203 | | Axle Nut | 150 - 250 | 203 - 339 | | Crank Bolt | 90 - 110 | 122 - 149 | Use a 3/8-inch drive for small fasteners

He looked at the other tools in his chest. The ratchets were tangled, the sockets dusty. He’d never “maintained” any of them. But this wrench demanded respect. It was a precision instrument, not a crowbar. He gently spun the handle back down to 20, the spring inside sighing in relief.

Mastercraft typically offers a against defects in materials and workmanship for these wrenches. Some "Mastercraft Maximum" versions may include a lifetime warranty on the ratcheting head itself, though the calibration is usually only covered for 90 days to 6 months. Step by Step - How to Use A Torque Wrench For Beginners