Carbide button bits from Crowder Supply put premium-grade tungsten carbide buttons on a heat-treated steel body for fast, consistent penetration in hard rock. Threaded options cover H, R25, R32, R38, R51, T38, T45 and T51 systems in face diameters from 1-3/8 in. through 8 in., with retrac and ballistic configurations for drifting, benching, bolting and production drilling in mining, quarrying, tunneling and construction.

Button bits carry their cutting structure as carbide inserts set across the face and gauge row, which spreads impact energy and holds gauge diameter longer than blade-style bits in abrasive rock. The bit is only one end of the string: matching the same thread system through your extension rods and shank adapter is what protects every joint from washout. If you are weighing carbide shapes or thread systems, the rock drill bit buyers guide walks through matching bit to rock; for softer or blocky ground where a blade profile cuts faster, Crowder Supply also stocks carbide-tipped cross bits.

• Thread systems: H, R25, R32, R38, R51, T38, T45 and T51 to match your drill string and shank adapter
• Face diameters from 1-3/8 in. to 8 in. stocked; 1-1/4 in. to 12 in. available by quote
• Carbide profiles: dome for hard abrasive rock, parabolic (semi-ballistic) for faster penetration, full ballistic for soft-to-medium formations
• Retrac body option cleans the hole wall on retraction and helps hold alignment in broken ground
• Premium-grade tungsten carbide buttons on a heat-treated alloy steel body for long wear life
• Applications: mining, quarrying, tunneling, foundation and construction drilling
• Stocked by Crowder Supply in Denver in the popular thread-and-diameter combinations