Tighten and free nuts and bolts with sockets thanks to rotary impact action.

Deep impact socket 1/2" 21mm DeWalt DT7555-QZ
Key features
- Connection1/2"
- Dimensions (mm)21
- TypeDeep impact socket
What it is
The deep impact socket DeWalt DT7555-QZ is a deep impact socket with a 1/2" square drive and a size of 21 mm, designed for use with impact drivers. The deep geometry makes it possible to tighten and loosen nuts even when the thread protrudes, offering an effective grip on the profile in repetitive, high-torque work.
Impact sockets are reinforced sockets for use with impact wrenches, together with extensions, universal joints and adapters that fit the tool's square drive.
What it is for
Used for repetitive screwdriving into wood, metal and plasterboard, where torque and consistency matter, for vehicle maintenance, in the workshop and on the road and for tightening nuts and bolts where torque must be accurate and repeatable.
How to use it
Choose a socket of the exact size of the nut and with the same square drive as the impact wrench, or use an adapter. Push it on until the detent ball or retaining ring clicks home, adding an extension or universal joint only if needed to reach the nut. On impact tools, use only impact-rated sockets and accessories, as chrome hand sockets can shatter. Discard sockets with a worn-oval or cracked opening.
Where it is used
- Mechanical engineering industry
- Mechanical workshops
Technical data
- Connection: 1/2"
- Dimensions (mm): 21
- Type: Deep impact socket
Who it is for
Designed for auto electricians and mechanics.
Related products
- Deep impact socket 1/2" 22mm DeWalt DT7556-QZ
- Deep impact socket 1/2" 19mm DeWalt DT7553-QZ
- Compact impact wrench 1/2" detent pin 18V XR with 2 x 5Ah batteries DeWalt — from the category Impact Wrenches (Square Drive)
- Mid-torque cordless impact wrench M18 Fuel ⅜″ F drive (M18 FMTIW2F38) Milwaukee — from the category Cordless Impact Wrenches
- Set of 22 pieces, socket wrenches, 1/2" drive, DeWalt DWMT19241-1 — from the category Ratchet and Socket Sets
- Browse the whole category: Impact Sockets
Before you order
In your request, please state the connection type and the quantities required, so we can give you the right quotation first time.
For prices and availability, request a quote from AMES Srl: we will reply with our quotation, delivery times and, where needed, an equivalent technical alternative.
Specifications 3
| Connection | 1/2" |
|---|---|
| Dimensions (mm) | 21 |
| Type | Deep impact socket |
The perfect setup for this job
Everything you need in one place, from functionality to safety.
For the job
Tighten and loosen bolts and nuts with high-torque rotary impacts.
Tighten and loosen nuts and bolts with sockets, without taking the tool off at every turn.
Lubricate, free up and protect against rust when sprayed directly onto the part.
For safety
Protect hands from abrasion, dirt, liquids and minor cuts while keeping a firm grip.





