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ISO H5 / DIN 8051 B tolerance: Tight
and supports repeatable assemblies across a range of materials
apply cutting oil or threading lubricant
clean threads with lasting edge life
M2 high-speed steel for durability
Dormer Pramet A520 3.70 mm HSS TiN ADX STRAIGHT SHANK STUB DRILL DIN 1897 Inner Cartridge ISO H5 / DIN 8051The Dormer Pramet A520 3. 70 mm HSS TiN ADX Straight Shank Stub Drill (DIN 1897) is a compact, reliable drill bit designed for accurate hole making in a wide range of materials. With a straight shank and stub length, it fits easily into standard chucks and drill presses, delivering controlled entry and consistent results. 130 Thinned Point for Self Centering: Promotes accurate entry and lowers push force, reducing wandering and improving start quality
