Value Collection 01189158 Letter O Hss Jobber Drill Bit

Product Description

The VALUE COLLECTION 01189158 is a Letter O jobber-length drill bit designed for general-purpose metal drilling in professional trade and industrial shop environments. Manufactured from high speed steel (HSS) with an oxide coating, this bit handles steel and cast iron with reliable performance across repeated use cycles. The 118-degree standard point angle suits a wide range of common drilling applications. At 4.5 inches overall length with a 3.1875-inch flute length, it offers the extended reach typical of jobber-series tooling. The straight cylindrical shank provides solid chuck engagement in standard 3-jaw drill chucks.

This bit is suited for drilling steel and cast iron in fabrication, maintenance, and repair applications. The right-hand spiral flute design efficiently evacuates chips during through-hole and blind-hole drilling. The web-thinned, tapered web configuration reduces thrust requirements at the cutting tip, making it practical for hand-held and drill-press use in production and field service settings. It is commonly used by machinists, millwrights, pipefitters, and general maintenance technicians.

Key Features

• Letter O size — 0.3160 inch decimal equivalent for precise hole sizing
• 118-degree standard point angle for general-purpose steel and cast iron drilling
• High speed steel construction with oxide coating for heat and wear resistance
• Web-thinned tapered web reduces cutting thrust and improves penetration
• Right-hand, regular spiral flute promotes efficient chip evacuation
• Straight cylindrical shank fits standard drill chucks without adapters

Compatibility

Designed as a general-purpose jobber drill bit compatible with standard 3-jaw drill chucks accepting a 0.3160-inch straight shank, suitable for use in drill presses, hand drills, and milling machine setups targeting steel and cast iron workpieces.

Installation Notes

Installation and use should be performed by qualified machinists or tradespeople following applicable shop safety procedures. Secure the shank firmly in a calibrated chuck before use and verify concentricity to minimize runout. Always power down and de-energize the drilling equipment before bit changes. Use appropriate cutting fluid or coolant when drilling steel to extend bit life and maintain dimensional accuracy.