MAYKESTAG Speeddrill+ Universal Solid Carbide Stub Drill ALTINDUR 4.00mm DIN 6537K 3xD

Maykestag Speeddrill+ Universal Solid Carbide Stub Drill ALTINDUR 4.00mm

At a Glance: Professional 4.00mm solid carbide short-series drill from the Maykestag Speeddrill+ Universal range, featuring ALTINDUR coating, a 140° point angle, Type N geometry and a 3xD drilling depth to DIN 6537K.

The Maykestag Code 6728 Speeddrill+ Universal is a precision solid carbide stub drill developed for accurate and dependable drilling across a broad selection of engineering materials. Its short 3xD design combines compact geometry with the rigidity of solid carbide, making it particularly well suited to applications where accurate hole positioning, dimensional control and stable cutting performance are important.

This 4.00mm version features two cutting edges, a 140° point angle and Maykestag's Type N universal geometry. The cutting section is protected by the specified ALTINDUR coating, while the DIN 6535-HA cylindrical shank provides a precise interface for suitable toolholding systems. The drill has no internal coolant channels.

Product highlights

• 4.00mm precision diameter: Manufactured with an h7 cutting-diameter tolerance for controlled hole sizing.
• Solid carbide construction: VHM solid carbide provides high rigidity and dimensional stability for precision drilling applications.
• ALTINDUR coating: Maykestag specifies ALTINDUR coating for the Code 6728 Speeddrill+ Universal series.
• Short 3xD design: Compact drill geometry designed for drilling depths up to three times the nominal diameter.
• DIN 6537K: Manufactured to the dimensional standard specified by Maykestag for this short-series solid carbide drill.
• Type N geometry: Universal drill geometry developed for the broad material range specified by Maykestag.
• 140° point angle: Precision point geometry specified across the Speeddrill+ Universal Code 6728 series.
• Two cutting edges: Two-edge drill construction for controlled cutting and chip formation.
• DIN 6535-HA shank: Precision cylindrical shank manufactured to the specified HA form.
• HPC designation: The Code 6728 series carries Maykestag's HPC identification for this Speeddrill+ tool family.

Compact Geometry for Precision Drilling

The short-series design keeps the working section of the drill compact, supporting rigidity during machining. For this 4.00mm version, Maykestag specifies a 6.00mm shank diameter, 66mm overall length and 24mm flute length. Combined with the 140° point geometry and solid carbide construction, this creates a precisely defined drilling tool for controlled machining when used with the correct speeds, feeds, toolholding and workpiece conditions.