Value Collection 01189190 Letter S Jobber Drill Bit Hss

Product Description

The VALUE COLLECTION 01189190 is a letter S jobber-length drill bit designed for general-purpose drilling in steel and cast iron. It is manufactured from high speed steel (HSS) with an oxide coating that helps reduce friction and extend tool life under moderate cutting conditions. The bit features a 118-degree standard point angle, a web-thinned and tapered web configuration for easier starting, and a regular spiral flute pattern. At 4.875 inches overall length with a 3.5-inch flute length, it fits standard drill chucks and is suited for use in hand drills, drill presses, and magnetic-base drills. Machinists, fabricators, maintenance mechanics, and trade professionals who work with ferrous metals install and use this bit routinely.

This drill bit is appropriate for production and maintenance drilling in residential, commercial, and light industrial settings. Its straight cylindrical shank and letter S diameter of 0.348 inches make it a common choice when drilling clearance holes, tap-drill holes, or through-holes in steel plate, pipe, and cast iron components. The right-hand cutting direction is standard for conventional drill press and handheld power tool operation. It is sold individually and is well suited for shops that maintain a complete set of letter-size drill bits for close-tolerance work.

Key Features

• Letter S diameter: 0.348 inches for close-tolerance hole sizing
• 118-degree standard point angle with web-thinned, tapered web for reduced thrust on entry
• High speed steel construction withstands heat generated during drilling in ferrous metals
• Oxide coating reduces friction and provides moderate corrosion resistance
• Regular spiral, 2-flute design promotes chip evacuation in steel and cast iron
• Straight cylindrical shank compatible with standard drill chucks

Compatibility

Designed as a general-purpose jobber drill bit for use in standard drill presses, hand drills, and magnetic-base drills with chucks sized to accept a 0.348-inch straight shank. Primary workpiece materials are steel and cast iron.

Installation Notes

A licensed machinist or qualified tradesperson should secure the shank fully in the chuck before operation and verify the chuck is tightened on all key positions. The operator should clamp the workpiece firmly to prevent rotation. Cutting fluid or cutting oil is recommended when drilling steel to control heat buildup and extend bit life. Inspect the cutting edges before each use and replace the bit if chipping or dulling is observed.