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The ACCUPRO 4500049 is a solid carbide jobber-length drill bit designed for drilling hardened materials in demanding production and maintenance environments. It carries a wire gauge size of 23, equal to 0.154 inches in diameter, and features a 140-degree split-point geometry with UR web thinning to reduce thrust and improve centering. A TiAlN coating provides heat resistance at elevated cutting speeds. The slow-spiral flute configuration promotes chip evacuation in tough, work-hardening alloys and hardened steels. Licensed HVAC, plumbing, and electrical tradespeople routinely reach for carbide drills like this when working with hardened fastener plates, heat-treated brackets, or stainless sub-assemblies.
This drill bit is suited for precision drilling in hardened materials across residential and light commercial service applications. The straight cylindrical shank measures 0.1875 inches in diameter, making it compatible with standard keyed and keyless drill chucks. Overall length is 2.0625 inches with a flute length of 0.875 inches, placing it in the short jobber class appropriate for controlled, rigid setups. The 2-flute geometry balances chip clearance with core strength in carbide construction. DIN specification designation confirms dimensional standardization for tooling interchangeability.
Designed as a standard jobber-length carbide drill for use in rigid drilling setups targeting hardened materials. No specific machine or system compatibility data was provided in the product input.
Carbide drill bits require rigid machine setups — avoid use in handheld or wobbly chuck configurations, as carbide is brittle and susceptible to fracture under lateral load. Power down and de-energize any machine tool before bit changes. Use cutting fluid or air blast where permitted to manage heat, as TiAlN coating is designed for dry or semi-dry cutting at appropriate speeds. Follow machine manufacturer speed and feed recommendations for carbide tooling in hardened materials.
We pulled together the parts most installs need for this unit, plus a few add-ons worth a look. Check what you need — nothing here blocks checkout.
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