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The VALUE COLLECTION 01378561 is a cobalt screw machine length drill bit sized at wire gauge 56 (0.0465 inches decimal equivalent). Built for heavy-duty drilling applications, it features a 135-degree split point that reduces walking on entry and lowers the thrust needed to start a hole. The straight shank and shortened overall length of 1.375 inches make it well-suited for work in tight clearances or on drill presses where a standard length bit would be impractical. Two regular spiral flutes evacuate chips efficiently during operation. Machinists, toolroom technicians, and fabricators typically reach for this bit when drilling small-diameter holes in ferrous metals and harder alloys where high-speed steel tooling falls short.
This bit is intended for drilling small-diameter holes in production and maintenance machining environments. The cobalt construction handles elevated cutting temperatures, making it a practical choice for stainless steel, hardened steel, cast iron, and other abrasion-resistant materials. The screw machine length body provides added rigidity compared to jobber-length bits of the same diameter, reducing deflection and improving hole accuracy in short-run and repetitive drilling tasks on manual mills, drill presses, and CNC equipment.
Designed as an OEM-style replacement or stock tooling option for any standard straight-shank drill chuck accepting bits in the wire gauge size range of 0.0000 to 0.1000 inches decimal diameter.
Installation and use should be performed by a qualified machinist or toolroom technician familiar with small-diameter drill bit handling. Secure the bit fully in a properly sized chuck and verify runout before beginning a cut. Always power down and lock out the machine before changing bits. Avoid side-loading or prying with the bit, as small-diameter cobalt bits are brittle under lateral force and will snap.
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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