Gühring 304200936 50mm HSS Stiftlochbohrer Pin Hole Twist Drill Bit

This is a new Gühring "Stiftlochbohrer" (pin hole drill / taper shank twist drill) in HSS, catalog number 304200936, featuring a 50.0 mm cutting diameter with overall length of 517.0 mm and flute/working length of 382.0 mm, as confirmed by the label and engraving on the shank. The black oxide surface treatment (visible on both the body and flutes) reduces friction, improves lubrication retention, and provides a degree of corrosion resistance — a standard Gühring finish designation for HSS tools of this class. This large-diameter HSS drill is designed for precision pin-hole and through-hole boring operations in steels, cast iron, and similar materials where a high-speed steel tool is preferred over carbide for interrupted cuts or tougher setups; it accepts a large Morse taper or dedicated taper shank interface consistent with its shank geometry. Manufactured in Germany to DIN 341 (long series taper shank twist drill) standards, this drill is suited to heavy-duty radial arm, column, or horizontal boring machine setups where rigid fixturing and coolant supply are employed.

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