1. Product Overview
The DEWALT DT70547T-QZ Aluminium Magnetic Screwlock Sleeve is engineered for secure bit retention and efficient screwdriving. This accessory is precisely CNC machined with a torsion zone designed to absorb peaks in torque, allowing for optimum bit flex and maximizing life in impact and high-torque applications. Its specially designed bit tip optimizes the fit into fasteners, effectively eliminating wobble and stripped screws. This sleeve is ideal for professional users requiring excellent hold, reach, stability, and accessibility in all screwdriving tasks, including those in awkward-to-reach areas. It is compatible with 50mm and longer torsion bits.

Figure 1: DEWALT DT70547T-QZ Magnetic Screwlock Sleeve
2. Features
- Magnetic Screwlock System: Provides a secure hold for bits and screws, preventing drops and ensuring stability during operation.
- Torsion Zone: Integrated design absorbs high torque peaks, extending the lifespan of the bit and sleeve in demanding applications.
- Optimized Bit Fit: Engineered tip design minimizes bit wobble and reduces the risk of stripping screw heads.
- Durable Aluminium Construction: Manufactured from robust aluminium for enhanced durability and resistance to wear.
- Impact Ready: Specifically designed to withstand the rigors of impact and high-torque screwdriving.
3. Setup
- Insert Screwdriver Bit: Select a compatible 50mm or longer torsion bit. Push the hex end of the screwdriver bit firmly into the magnetic screwlock sleeve until it is fully seated and secure.
- Attach to Drill/Driver: Insert the 1/4 inch hex shank of the assembled magnetic screwlock sleeve (with bit) into the chuck of your drill or impact driver. Ensure the chuck is tightened securely around the sleeve's shank.
- Position Screw: Place the desired screw onto the tip of the inserted screwdriver bit. The magnetic properties of the sleeve will hold the screw firmly in place, allowing for single-handed operation.

Figure 2: Magnetic Screwlock Sleeve with bit inserted
4. Operating Instructions
Once the magnetic screwlock sleeve and bit are securely attached to your drill/driver and a screw is positioned, you can proceed with screwdriving. The sleeve is designed to maintain the screw's alignment and prevent it from falling off, especially in overhead or hard-to-reach applications.
- Ensure the screw is aligned with the desired driving point.
- Apply steady, firm pressure to the drill/driver.
- Engage the drill/driver to drive the screw. The magnetic sleeve will keep the screw stable until it is fully engaged in the material.
- After driving, simply pull the drill/driver away; the sleeve will release the screw.

Figure 3: Compact size for accessing tight spaces
5. Maintenance
- Cleaning: Regularly wipe the magnetic screwlock sleeve with a clean, dry cloth to remove dust, debris, and metal shavings that may accumulate due to its magnetic properties.
- Inspection: Periodically inspect the sleeve for any signs of wear, damage, or deformation. Ensure the internal mechanism for bit retention is functioning correctly.
- Storage: Store the sleeve in a dry environment to prevent corrosion. Avoid storing it near sensitive electronic devices due to its magnetic field.
6. Troubleshooting
- Bit Not Holding Securely:
- Ensure the screwdriver bit is fully inserted into the sleeve.
- Check for excessive debris or metal shavings inside the sleeve that might interfere with the magnetic hold. Clean if necessary.
- Inspect the bit for damage or excessive wear on its hex shank, which could prevent a secure fit.
- Screw Wobbles or Falls Off:
- Verify that the correct type and size of screwdriver bit is being used for the screw head.
- Ensure the magnetic sleeve is clean and free from obstructions that could weaken the magnetic attraction to the screw.
- Confirm that the screw is properly centered on the bit tip before driving.
7. Specifications
| Attribute | Value |
|---|---|
| Brand | DEWALT |
| Model | DT70547T-QZ |
| Material | Aluminium |
| Item Length | 1.97 Inches |
| Drive Bit Shank Style | 1/4 inch |
| Number of Pieces | 1 |
8. Warranty & Support
For detailed warranty information, product registration, or technical support, please refer to the official DEWALT website or contact DEWALT customer service directly. Keep your purchase receipt as proof of purchase for any warranty claims.





