An impact wrench from DeWalt with a 1/2 in square drive, 18V, on the XR platform. Below we explain every spec: what it is and how it matters on the job.
Bare weight: 2.9 kgImpacts: Not published by the maker
The impact wrench is a cordless tool with a square drive (3/8, 1/2, 3/4 or 1 inch) that tightens and loosens nuts and bolts with strong rotational impacts. It is made for structural steel connections, pipe connections, equipment maintenance and industrial assembly. Bosch's Arabic catalogue calls it «مفتاح ربط مطرقي», and technicians say «شد بوكسات». It differs from the impact driver, which has a 1/4 inch hex holder and is made for screws: the wrench takes sockets and delivers far more torque on large nuts. This category does not include ratchets, torque wrenches or air tools.
The highest tightening torque the maker publishes for the tool when it drives a nut or bolt.
How it helps you: The figure gives you an idea of the size of bolts the tool is made for. Compare it only within the same drive, and check the bolt range the maker publishes for the model.
The force the tool can use to free a seized nut (nut-busting torque). Each brand defines and measures it differently, so the numbers cannot be compared fairly and it is not scored.
How it helps you: It helps when you loosen rusted nuts or bolts tightened long ago. Freeing a seized nut takes far more force than tightening it. We show it for information only: we do not penalise a tool because its maker did not publish the number, and we do not compare a published number with a missing one.
The size of the square drive the socket fits on: 3/8, 1/2, 3/4 or 1 inch.
How it helps you: The size decides which sockets fit. 3/8 inch is for smaller fasteners and tight spaces, 1/2 inch is for structural and machinery bolts, and 3/4 and 1 inch are for large-diameter bolts. For information only, no points.
How the socket is held on the drive: hog ring, friction ring or pin detent.
How it helps you: Friction ring and hog ring let you swap sockets quickly with one hand, while pin detent locks the socket with a pin for a firmer hold on heavy jobs but is a bit slower to change. For information only, no points.
Each dot is a tool with a 1/2 in square drive. The scale is linear from the lowest to the highest published tightening torque in the class.
Revolutions per minute in the high setting with no load.
How it helps you: Higher speed runs a nut down faster before the impacts start, which saves time on jobs with many bolts. A slower speed helps when you want control at the start.
Speed in the slowest setting, meant for starting a nut gently and for precise work.
How it helps you: A slower speed gives you more control starting a nut, so you do not damage the threads. There is no universally better number, so it does not count toward the score.
How many rotational impacts the tool delivers per minute (bpm). Makers that write ipm (impacts per minute) mean the same figure, and we normalise the unit to bpm.
How it helps you: More impacts per minute mean faster tightening and loosening of large nuts, especially when you have a lot of nuts and bolts to do.
How many modes you can set for the tool's speed and power (each maker names them differently: levels, steps, modes).
How it helps you: More modes let you match the power to each job: a gentle mode for tightening nuts without overshooting the torque you need, a strong mode for freeing seized nuts. It protects fasteners and saves battery.
The tool's weight without a battery, as the maker publishes it.
How it helps you: A lighter tool is easier on your arm working below machinery, overhead and over long days. We compare without the battery, because the weight with it depends on which pack you fit.
The length of the tool from the back of the head to the square drive.
How it helps you: A shorter tool fits tight spots: inside housings, around machine parts and between steel members. The shorter it is, the easier it is to work at an awkward angle.
A motor without carbon brushes, controlled electronically.
How it helps you: It is more efficient, runs cooler and needs no brush changes. Almost every tool in this category is brushless anyway, so it carries no points and is shown for information.
An LED fitted at the front of the tool that lights the work area.
How it helps you: You can see the nut in dark places: under machines, inside frames, in a closed workshop. It saves you from holding a torch in your other hand.
Coverage for the tool itself. Terms differ by each brand's agent in Jordan.
Coverage for the battery. Terms differ by each brand's agent in Jordan.
The highest tightening torque the maker publishes for the DeWalt DCF900 is 1,396 Nm.
The DeWalt DCF900 runs on 18V on the XR platform, with an official bare weight of 2.9 kg and a length of 223 mm.
The DeWalt DCF900 has a 1/2 inch square drive, and the maker publishes a nut-busting torque of 1,898 Nm, a separate number from the tightening torque that is never added to it.
Tools with the same square drive from other brands. Pick one and enter the ring.
Sources: Tightening Torque: www.dewalt.co.uk, Weight (Bare Tool): www.dewalt.de, and the official operating manuals. Last checked 2026-10-13. Tool image: DeWalt. Tools Battlefield is independent and not affiliated with any brand.
