Value Collection 01378512 Cobalt Drill Bit Size 51

Product Description

The VALUE COLLECTION 01378512 is a cobalt screw machine length drill bit designed for drilling in hard and abrasive materials where standard high-speed steel bits wear prematurely. Built to a wire gauge size of 51 with a decimal equivalent of 0.0670 inches, this bit features a 135-degree split point that reduces walking on entry and lowers thrust force required during drilling. The right-hand cutting direction and regular spiral flute geometry suit it to production and maintenance drilling in ferrous metals, stainless steel, and other tough alloys. At 1-11/16 inches overall length, the screw machine format provides added rigidity over jobber-length bits, making it well suited for close-quarter drilling and drill press work.

This bit is used in metalworking applications across manufacturing, maintenance, and repair environments. The short, rigid body performs well in screw machines, CNC machining centers, and bench-top drill presses where tool deflection must be minimized. Its heavy-duty grade cobalt construction handles interrupted cuts and high-heat applications that would degrade standard M2 high-speed steel tooling. Licensed machinists, tool and die workers, and maintenance mechanics are the typical end users.

Key Features

• Cobalt construction provides heat and wear resistance for drilling hard and abrasive metals
• 135-degree split point reduces walking on entry without a center punch
• Screw machine length body adds rigidity and reduces deflection compared to jobber-length bits
• Right-hand, regular spiral flute geometry promotes efficient chip evacuation
• Straight shank fits standard drill chucks without adapters
• Heavy-duty grade rating suited for production drilling and high-cycle maintenance work

Compatibility

Designed as an OEM-style replacement or stock tooling selection for screw machine and drill press operations requiring a wire gauge size 51 straight-shank drill bit with a 0.0670-inch cutting diameter.

Installation Notes

Installation is performed by machinists or maintenance mechanics. Secure the straight shank firmly in a drill chuck or collet before use and verify runout is within acceptable limits for the application. Follow applicable shop safety procedures, including appropriate eye protection and chip guarding. Do not exceed the recommended cutting speed and feed rate for the workpiece material, as overheating will degrade cobalt tooling performance.