Value Collection 01189091 Letter I Hss Jobber Drill Bit

Product Description

The VALUE COLLECTION 01189091 is a high speed steel jobber-length drill bit sized to letter I, equivalent to 0.272 inches in diameter. It features a 118-degree standard point angle and an oxide coating that provides basic lubricity and corrosion resistance during drilling operations. The bit is web-thinned with a tapered web configuration, which reduces the thrust force needed to start a hole. With an overall length of 4.125 inches and a 2.875-inch flute length, it fits standard drill chucks with a straight cylindrical shank. This bit is used by machinists, maintenance technicians, pipefitters, and general fabricators working in metal trades.

This drill bit is suited for general-purpose drilling in steel and cast iron in both shop and field environments. The right-hand cutting direction and regular spiral flute geometry provide efficient chip evacuation in these ferrous materials. The straight shank accepts standard three-jaw chucks on benchtop drill presses, magnetic drills, and hand-held power drills. It is appropriate for production and maintenance drilling where a standard letter-size drill is called out on a drawing or required to achieve a specific hole diameter prior to tapping or reaming.

Key Features

• Letter I size — 0.272 inches diameter — for applications requiring a specific decimal hole size in the 0.250 to 0.300 inch range
• 118-degree standard point angle suited for steel and cast iron drilling
• High speed steel construction with oxide finish for basic wear and corrosion resistance
• Web-thinned tapered web reduces thrust and improves hole-starting accuracy
• Regular spiral flute with right-hand cut for efficient chip removal in ferrous materials
• Straight cylindrical shank fits standard three-jaw drill chucks without adapters

Compatibility

Designed as a general-purpose jobber drill for use in standard three-jaw chucks on drill presses, hand drills, and magnetic drills. Primary workpiece materials are steel and cast iron.

Installation Notes

This bit is installed and serviced by machinists, maintenance mechanics, and trade professionals working with ferrous metals. Secure the bit fully in the chuck and verify it runs true before drilling. Coolant-through operation is not supported; use a cutting fluid applied externally when drilling steel to extend tool life. Never force a dull bit — replace it to maintain hole quality and prevent breakage.