Drive size follows the torque you need and must match your sockets. As a guide from the names on this page, 1/4 inch drive covers 5-25Nm, 3/8 inch 20-110Nm, 1/2 inch 30-210Nm or 60-340Nm, and 3/4 inch 150-800Nm or 300-1000Nm. Pick a wrench whose range has your target figure near the middle, not at either end.
A micrometer style wrench is set by turning the handle until the scale shows the torque you want; it then clicks when that torque is reached. Examples here run from a 1/4 inch drive 5-25Nm model to a 3/4 inch drive 150-800Nm model, and a 3 piece set covers 1/4, 3/8 and 1/2 inch drive. Wind the setting back down after use.
A digital torque wrench shows the applied torque on a screen, for example the 3/8 inch drive 2-24Nm model here. A digital torque adaptor fits between your own ratchet and the socket; the 1/2 inch drive 20-200Nm adaptor listed also measures angle, for fasteners specified as a torque plus a turn in degrees. A 1/2 inch angular torque gauge is listed too.
A torque stick is an extension bar used on an impact wrench that flexes to limit the torque reaching the nut, so wheel nuts are not over-tightened. Those named here are 1/2 inch drive, with ratings including 100Nm, 110Nm and 135Nm. Choose the rating that suits the vehicle maker's figure, and finish with a torque wrench to confirm the final setting.
It is a battery-powered tool that tightens to a controlled torque, used for large fasteners and repeated bolting work. The Chicago Pneumatic cordless models listed are 36V, with square drives named at 3/4, 1 and 1-1/2 inch. They are a different kind of tool from a hand click wrench, so check the torque range of each model before choosing.
A ratchet wrench turns sockets but does not measure or limit torque, so it is for running fasteners up, not final tightening to a figure. This page lists both. Ratchet wrenches come in 1/4, 3/8 and 1/2 inch drive with 48, 60, 72 or 90 tooth mechanisms; a higher tooth count needs less handle swing, which helps in tight spaces.
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A torque wrench is accurate across the middle of its range and least accurate at the extremes. That is why the figure being set should sit well inside the range rather than at either end, and why a workshop covering a wide span usually needs two wrenches rather than one large one. Torque is also the one figure on a fastener that cannot be judged by feel, however experienced the hand.
Drive size follows the sockets and the fastener. The range here covers 3/8 inch for engine and interior work, 1/2 inch for wheels and suspension, and 3/4 inch and 1 inch for commercial fasteners. A torque figure set through an adaptor between drives is no longer reliable.
Type decides how the setting is made and read. A click wrench is set on the handle and signals when the figure is reached, which needs nothing but the tool. A digital wrench displays the reading as it builds and can hold a target, which suits a joint where the figure changes between fasteners. Sealey run click and digital ladders across 3/8 inch, 1/2 inch and 3/4 inch drives.
Cordless torque wrenches sit at the commercial end, running the fastener down and shutting off at a set figure. The Chicago Pneumatic CP8603 family covers 3/4 inch at 36V and the CP8609 family runs 36V and 1 inch across B, BT, C, CT, xC and xCT variants. Calibration is not claimed here. Questions go over WhatsApp on 07754288583. Draper hold ratchet torque wrenches including the 64534 at 3/8 inch drive covering 10 to 80Nm.
| Square Drive | 1" |
|---|---|
| Calibrated Range | 338 - 1350 N·m / 250 - 1,000 lbf·ft |
| Tool Weight* | 6.2kg |
Drive size follows the torque you need and must match your sockets. As a guide from the names on this page, 1/4 inch drive covers 5-25Nm, 3/8 inch 20-110Nm, 1/2 inch 30-210Nm or 60-340Nm, and 3/4 inch 150-800Nm or 300-1000Nm. Pick a wrench whose range has your target figure near the middle, not at either end.
A micrometer style wrench is set by turning the handle until the scale shows the torque you want; it then clicks when that torque is reached. Examples here run from a 1/4 inch drive 5-25Nm model to a 3/4 inch drive 150-800Nm model, and a 3 piece set covers 1/4, 3/8 and 1/2 inch drive. Wind the setting back down after use.
A digital torque wrench shows the applied torque on a screen, for example the 3/8 inch drive 2-24Nm model here. A digital torque adaptor fits between your own ratchet and the socket; the 1/2 inch drive 20-200Nm adaptor listed also measures angle, for fasteners specified as a torque plus a turn in degrees. A 1/2 inch angular torque gauge is listed too.
A torque stick is an extension bar used on an impact wrench that flexes to limit the torque reaching the nut, so wheel nuts are not over-tightened. Those named here are 1/2 inch drive, with ratings including 100Nm, 110Nm and 135Nm. Choose the rating that suits the vehicle maker's figure, and finish with a torque wrench to confirm the final setting.
It is a battery-powered tool that tightens to a controlled torque, used for large fasteners and repeated bolting work. The Chicago Pneumatic cordless models listed are 36V, with square drives named at 3/4, 1 and 1-1/2 inch. They are a different kind of tool from a hand click wrench, so check the torque range of each model before choosing.
A ratchet wrench turns sockets but does not measure or limit torque, so it is for running fasteners up, not final tightening to a figure. This page lists both. Ratchet wrenches come in 1/4, 3/8 and 1/2 inch drive with 48, 60, 72 or 90 tooth mechanisms; a higher tooth count needs less handle swing, which helps in tight spaces.
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