Bit adapters

Bit adapters serve the important role of expanding the working capabilities of drills and screwdrivers, enabling users to perform various operations without changing the main tool. This product group includes adapters with functions to convert between different shank standards, extend the reach of screwdriver bits, or enhance screw retention through integrated magnets.

Codes such as U648, U637, U638 and U635 serve the need to drive screws in deep positions or convert from SDS chuck to 6.3mm hexagon shank. In addition, adapters such as 138B and 426E allow connection between different shank systems, from SDS-Max to SDS-Plus or from 1/4 inch hexagon to M14 thread. The 362L adapter is dedicated to mounting carbide core bits on SDS-plus hammer drills with M16 thread.

Each product in the group is designed to optimize the working process, reduce tool change time and improve accuracy when operating in assembly, maintenance or construction environments.

Main functions of bit adapters

Bit adapters perform the task of connecting drills or screwdrivers with screwdriver bits, drill bits or other accessories. This function allows users to flexibly switch between shank standards without needing to own multiple separate tools. Codes such as U648 and U638 extend the working length, supporting access to deep positions in machine compartments or tight corners. Code U637 integrates two permanent magnets at the bottom and outlet, helping to hold screws firmly throughout the driving process. As a result, one-handed operation becomes easier, especially when working at height or in confined spaces.

The U635 adapter is dedicated to SDS chucks on drills, allowing the use of 6.3mm hexagon shank screwdriver bits on hammer drills with SDS-Plus chucks. This expands the application range of hammer drills, which are typically only used for drilling concrete or brick. Code 138B, 260mm long, converts from SDS-Max to SDS-Plus, enabling the use of SDS-Plus drill bits on drills with SDS-Max chucks. The 426E adapter connects 1/4 inch hexagon shank with M14 thread, serving to mount tools with M14 thread on standard drills. Code 362L with SDS-Plus shank and 105mm long M16 thread connects hammer drills with carbide core bits, compatible with Diager 360D, 431D and 432D core bit lines.

Classification by shank standard and conversion function

The bit adapter product group is divided into several types based on input and output shank standards. Long adapter types such as U648 and U638 use 6.3mm or 1/4 inch hexagon shank, helping to extend the distance from the tool to the driving point. This type is often chosen when access to deep positions in electrical boxes, machine frames or engine compartments is needed. Magnetic adapters such as U637 hold screws stable, reducing the risk of dropping screws when operating one-handed or working at height.

Adapter types between different shank systems include U635, 138B and 426E. Code U635 converts from SDS chuck to 6.3mm hexagon shank, allowing the use of screwdriver bits on hammer drills. Code 138B converts from SDS-Max to SDS-Plus, suitable when smaller drill bits need to be used on larger drills. Code 426E belongs to the Grey Ceram line, manufactured in France, converting from 1/4 inch hexagon to M14 thread to mount tools with M14 thread on standard drills. The 362L adapter is dedicated to core bits, using SDS-Plus shank and M16 thread, compatible with Diager carbide core bit lines.

Applications in assembly and maintenance

Bit adapters are widely used in mechanical assembly work, equipment maintenance and construction. In assembly, codes such as U648 and U638 help access deep positions inside machine frames or electrical boxes without needing to disassemble many parts. Magnetic adapters such as U637 reduce operation time when many screws need to be driven continuously, especially in production lines or mass assembly.

In maintenance, the U635 adapter allows the use of hammer drills to drive screws in construction environments, where typically only hammer drills are available without separate screwdrivers. Code 138B is useful when small holes need to be drilled on large drills, avoiding the need to carry multiple tools. The 426E adapter serves to mount grinding discs or wire brushes with M14 thread on drills, expanding the working capabilities of the tool. Code 362L is dedicated to core drilling on concrete, brick or stone, connecting SDS-Plus hammer drills with M16 thread carbide core bits.

Notes on selection and use

When selecting bit adapters, it is necessary to clearly identify the shank standard of the existing drill or screwdriver and the type of bit or accessory to be mounted. Codes such as U648, U638 and U637 use 6.3mm or 1/4 inch hexagon shank, suitable for most screwdrivers and handheld drills. The U635 adapter requires a drill with SDS-Plus chuck, while 138B requires a drill with SDS-Max chuck. Code 426E converts from 1/4 inch hexagon to M14 thread, suitable for tools with M14 thread such as grinding discs or wire brushes.

During use, it is necessary to check the tightness of the connection between the adapter and the drill to avoid slipping or dropping the bit during operation. Magnetic adapters such as U637 help hold screws firmly, but care should be taken not to let the magnet contact iron dust or metal chips excessively, as this can reduce magnetic force. Long adapters such as U648 and U638 increase working length but also reduce rigidity, so driving force should be adjusted appropriately to avoid breaking or bending the adapter. Code 362L with M16 thread requires checking compatibility with the core bit before use, ensuring the thread matches precisely to avoid thread damage or bit dropping during drilling.

The bit adapter product group provides flexible solutions for various operational needs, from driving screws in deep positions to converting between shank standards. Selecting the right adapter type helps optimize the working process, reduce tool change time and improve accuracy in assembly, maintenance or construction.