YG-1 D4148112 Cobalt Screw Machine Drill Bit Wire 12

Product Description

The YG-1 D4148112 is a cobalt screw machine length drill bit designed for high-speed drilling in tough materials. Built to a wire gauge size of 12 with a titanium nitride (TiN) coating, this bit delivers extended wear resistance and reduced friction at the cutting edge. The straight flute geometry suits drilling in materials that produce short, manageable chips. At 2.25 inches overall length, the screw machine format provides added rigidity over jobber-length bits, making it well suited for production drilling and tight-clearance setups. Licensed machinists, tool-and-die shops, and maintenance technicians are the primary users.

This bit is used in screw machine operations, CNC drilling fixtures, drill presses, and hand-held power tools where a compact, rigid drill is required. The short overall length reduces deflection during entry, which is important in repetitive production cycles or when drilling harder alloys such as stainless steel, titanium, and high-strength steel. The TiN coating extends tool life compared to uncoated high-speed steel tooling, making it a cost-effective option for moderate- to high-volume applications.

Key Features

• Cobalt construction provides heat resistance for drilling hard and abrasive materials
• TiN coating reduces friction and extends cutting life
• Wire size 12 diameter for precision-gauged hole requirements
• Straight flute design promotes clean chip evacuation in short-chipping materials
• Screw machine length (2.25 inches OAL) delivers rigidity and reduced deflection
• Straight-cylindrical shank fits standard drill chucks without adapters

Compatibility

Designed for use in standard drill chucks accepting a straight-cylindrical shank. Compatible with screw machines, CNC drilling equipment, benchtop drill presses, and hand-held power drills requiring a wire-gauge screw machine length bit.

Installation Notes

This bit is installed by machinists and maintenance technicians using standard drill chuck tooling. Secure the shank fully in the chuck and verify concentricity before drilling. Ensure the workpiece is clamped or fixtured before beginning the cut. Use appropriate cutting fluid or coolant for the material being drilled to maximize tool life, noting this bit does not feature through-coolant capability.