Guhring 304198259 40mm HSS 495x355mm Stiftlochbohrer Twist Drill Bit

This is a new Gühring Stiftlochbohrer (pin-hole / twist drill) in HSS (High Speed Steel), order number 304198259, with a nominal cutting diameter of Ø 40.0 mm, overall length of 495 mm, and flute/working length of 355 mm, as confirmed by both the tube label and the engraving on the drill collar. The drill features a black oxide surface treatment consistent with Gühring's standard HSS finish, which provides corrosion resistance and mild lubricity; the 2-flute helical geometry and large-diameter cylindrical shank are visible in the photos, indicating a reduced-shank (morse taper or straight shank) configuration appropriate for large-diameter boring operations on steel, cast iron, and non-ferrous materials. Made in Germany to Gühring's precision manufacturing standards, this drill is intended for use in drill presses, lathes, or machining centers equipped with a suitable large-bore chuck or collet system capable of accepting a straight shank at this diameter class. Internal serial/batch numbers 23563739 and 23571113 are engraved on the collar for full traceability.

Product Specifications