This detailed product description presents the 120° countersink flat end mill from the professional tools range of Wieländer+Schill, equipped with a depth stop and pilot pin. This tool is essential for precise hole machining, especially when installing screws and rivets, ensuring a perfect fit and surface finish.
The 120° countersink flat end mill, part number 617240, is a fundamental tool for auto body repair and metalworking tasks. Its design allows for the precise and uniform countersinking of holes, which is critical for assembly accuracy and visual appearance. The integrated depth stop and replaceable pilot pin guarantee consistent results with every operation.
This tool belongs to the Wieländer+Schill category „Separating Tools” and offers outstanding durability and service life thanks to its high-performance HSS (High-Speed Steel) material.
Precision Countersinking: The 120° angle is ideal for most standard countersunk head screws and rivets.
Controlled Depth: The depth stop prevents excessive material removal, ensuring the desired depth is achieved.
Centering: The pilot pin enables precise positioning in already existing holes.
High Speed Capability: Can be used at a maximum speed of up to 3000 rpm, allowing for efficient work.
Quality Material Use: The combination of HSS (High-Speed Steel) and steel guarantees a long service life.
The product is supplied as a complete set, including the countersink flat end mill, the depth stop, and the pilot pin.
| Property | Value | Note |
|---|---|---|
| Part number | 617240 | |
| Content | 1 set | |
| Angle | 120° | Countersinking Angle |
| Mill Diameter (Ø) | 3 mm, 6.3 mm | For various hole sizes |
| Pilot Pin Diameter | 4.0 mm | Default size found in the set |
| Total Length | 87 mm | |
| Material | HSS, Steel | High-strength alloy |
| Shank Diameter | 8.0 mm | Shank Diameter |
| Maximum Rotational Speed | 3000 RPM (revolutions per minute) | |
| Weight | 0.090 kg |
The 617240 set is equipped with the key components required for precision work:
120° Countersink Flat End Mill: This main element is responsible for creating the conical shape of the bore. The 120° angle is ideal for most standard fasteners.
Depth Stop: This mechanism ensures that the countersink does not exceed the desired depth, which is essential for maintaining surface flatness, especially on body parts where a flat surface is critical for subsequent painting phases.
Pilot Pin: The pilot pin fits into the existing bore hole, thus ensuring that the countersink is positioned exactly in the center of the bore, avoiding centering errors.
This countersink can be excellently applied in the following areas:
Vehicle Body Repair: Precise insertion of rivets and countersunk head screws.
Sheet Metal Structures: Any application where the heads of fasteners need to be flush with the workpiece surface.
General Metal and Sheet Metal Machining: Precise hole preparation for secondary operations.
For maximum flexibility and adaptation to different working environments, Wieländer+Schill offers further accessories for this countersink, which can be purchased separately:
| Accessory | Part number | Description |
|---|---|---|
| Pilot Pin | 617245 | 4.0 mm diameter pilot pin for precise positioning. |
| Pilot Pin | 617246 | 6.3 mm diameter pilot pin for alternative bore sizes. |
| 120° Countersink (Milling only) | 617244 | Countersink head only, if the components of the existing set need replacement. |
| Automatic Center Punch | 932521 | Centering aid for hole preparation and milling. |
Important Note: Prices for the accessory pilot pins (617245, 617246) and the separate countersink (617244) can be viewed on the online interface after logging in.
To achieve optimal tool performance, it is recommended to adhere to the specified maximum rotational speed (3000 RPM). The HSS material is also excellently suited for machining harder materials, but using appropriate cooling and a slower rotational speed can increase tool life in cases of extreme load. The 8.0 mm shank diameter ensures stable clamping in suitable drilling or milling machines.
This 120° countersink with depth stop and pilot pin is a reliable, professional solution for fulfilling precision hole machining requirements in bodywork and sheet metal industry.
