Value Collection 01378504 Size 50 Cobalt Drill Bit

Product Description

The VALUE COLLECTION 01378504 is a screw machine length drill bit designed for high-speed drilling in tough materials where a short, rigid tool is required. Built from cobalt steel with a straw finish, this bit handles heat and wear better than standard high-speed steel, making it well suited for hardened steels, stainless steel, and other hard alloys. It carries a wire gauge size of 50, which equals 0.0700 inches in decimal, and features a 135-degree split point that self-centers on contact and reduces the need for a center punch. With an overall length of 1-11/16 inches and a flute length of 11/16 inches, the compact screw machine profile keeps deflection to a minimum in tight setups. This is a heavy duty grade bit sold individually with a minimum order quantity of 12 units.

This drill bit is used in production machining, metal fabrication, and maintenance repair operations where small-diameter holes are required in ferrous and non-ferrous metals. The short screw machine length is preferred in drill presses, CNC machines, and hand drilling fixtures where tool overhang must be minimized. The 135-degree split point geometry suits entry into curved or angled surfaces without walking. Machinists, tool-and-die workers, and maintenance technicians working in industrial and commercial shops are the primary installers and users of this bit.

Key Features

• Cobalt construction with straw finish for improved heat and wear resistance over standard HSS
• 135-degree split point self-centers on contact, reducing drill walk and the need for a center punch
• Wire gauge size 50 equals 0.0700 inches decimal diameter
• Screw machine length overall length of 1-11/16 inches minimizes deflection in close-quarter setups
• Right-hand cutting direction with regular spiral and 2-flute geometry for efficient chip evacuation
• Heavy duty grade rated for drilling hard alloys, stainless steel, and hardened ferrous metals

Compatibility

Designed as an OEM-style replacement or stock replenishment for screw machine length drill bit applications requiring a wire gauge size 50, 0.0700-inch diameter cobalt bit with a straight shank in drill presses, CNC drilling fixtures, or hand drill chucks accepting straight shank tooling.

Installation Notes

Installation and use should be performed by qualified machinists or maintenance technicians familiar with small-diameter drill bit handling. Secure the straight shank fully in the chuck and verify concentricity before drilling to avoid bit breakage at this small diameter. Use appropriate cutting fluid or coolant when drilling hard metals to preserve bit life, noting that this bit does not support through-coolant. Discard bits showing visible flute wear, chipping, or heat discoloration beyond normal straw coloration to avoid workpiece damage or breakage.