This professional 25-piece step drill bit set is optimized for precise, circular drilling tasks, specifically designed for use with hand drills. The excellent quality manufacturing and special geometric design guarantee efficient and accurate work during the machining of various materials.
The step drill bits feature a stepped tip geometry, which can include up to 6 steps, thus ensuring the creation of extremely precise and clean holes.
Precise Centering and Easy Cutting:
The drill bit tip is designed with a 118° point angle, complemented by optimized, sharp-edged cross-grinding. This combination ensures precise centering, minimizes the risk of the drill slipping on the workpiece, and enables extremely easy cutting.
Stable Grip for Hand Drills:
The drill bits have a cylindrical shank equipped with three flats (3-flat shank). This design ensures stable positioning in the drill chuck, preventing unwanted rotation or slippage during the drilling process, thereby increasing safety and workpiece quality.
Materials and Application Areas:
This set is ideally suited for bodywork construction and general metalworking, especially for drilling the following materials:
Steel
Sheet Steel
Plastic (Kunststoff)
The set is supplied in a transparent, durable plastic case (Plastic), which facilitates quick identification of sizes and organized storage of the tools.
Detailed technical specifications of the product can be found in the following table:
| Property | Value | Note |
|---|---|---|
| Part number | 637008 | Unique Identifier |
| Diameter Range (Ø) | 1.0 – 13.0 mm | The smallest and largest diameter found in the set |
| Step Pitch (Pitch) | 0.5 mm | The pitch of the stepped design |
| Design | Step Drill Bit | Special Tip Geometry |
| Number of Steps | Up to 6 steps | To achieve precise hole sizes |
| Flutes | 2 | Two spiral grooves |
| Point Angle | 118° | Optimized for precise centering |
| Split point | Optimized, sharp edge | For easy cutting |
| Shank Type | Cylindrical shank, 3-flat (3-flat shank) | Prevents slipping in the chuck |
| Conformity Declaration | DIN 338 | Complies with standard requirements |
| Material | HSS (High-Speed Steel) | Shank material |
| Accessory Case | Plastic | Storage material |
| Drillable Materials | Steel, Sheet Steel, Plastic | Main Application Areas |
| Form | Cylindrical shank | General drill bit shape |
| Net Weight | 0.610 kg | Weight of the complete set |
| Package contents | 1 set | Contents of the package |
The WS Wieländer+Schill step drills offer significant advantages for body repair and metalworking specialists:
Increased Accuracy: The stepped design allows for the gradual achievement of the hole size, which is particularly advantageous for thinner materials where sudden breakthrough should be avoided.
Time Saving: Since multiple diameters can be achieved with a single tool, the frequency of tool changes is reduced, which speeds up the work.
Longer Lifespan: The high-quality HSS material and the special tip geometry ensure the durability of the tools, even under high demand.
Safe Operation: The 3-flatted shank guarantees that the drill is firmly seated in the chuck, minimizing the risk of accidents and damage to the workpiece.
For maximum efficiency and precise work, the following supplementary tools are recommended for the step drills:
Automatic Center Punch: Part Number: 932521. Centering aid for preparing accurate drilling and milling.
BTR/BOR Cutting Fluid | 125 ml: Part Number: 628000. Silicone-free cutting oil that increases the service life of cutting tools when machining high-strength automotive body steels, ensuring optimal cutting performance.
Center Punch | Ø 5 × 120 mm: Part Number: 628007. Conventional centering aid for marking the precise drilling point.
This 25-piece step drill bit set (637008) is a fundamental component of the Wieländer+Schill professional tool range, guaranteeing reliable and precise drilling results even under the most demanding workshop conditions.
