Precision Twist Drill 5999432 Jobber Drill Bit Letter V

Product Description

The PRECISION TWIST DRILL 5999432 is a jobber-length drill bit sized at Letter V (0.3770 inches decimal equivalent), designed for general-purpose drilling in metal and hard materials. Built from high speed steel (HSS) with a steam oxide coating, it delivers consistent performance across a broad range of ferrous and non-ferrous workpieces. The 118-degree standard point angle and web-thinned tip reduce entry force and improve centering. The regular spiral flute geometry provides efficient chip evacuation during through-hole and blind-hole operations. This bit is a standard tool for machinists, maintenance mechanics, and fabricators working in shop or field environments.

This drill bit is suited for drilling into steel, stainless steel, cast iron, non-ferrous metals, superalloys, and titanium. It fits jobber-length applications where a 5-inch overall length and 3-5/8-inch flute length provide adequate reach without sacrificing rigidity. The straight-cylindrical shank accepts standard drill chucks across benchtop drill presses, hand drills, and CNC setups. It is appropriate for both production and maintenance drilling tasks requiring a reliable general-purpose HSS bit.

Key Features

• Letter V size — 0.3770 inches decimal equivalent for precise hole sizing
• 118-degree standard point angle with web-thinned tip for reduced thrust and improved centering
• High speed steel construction handles steel, stainless steel, cast iron, non-ferrous metals, superalloys, and titanium
• Steam oxide coating provides corrosion resistance and mild lubricity during cutting
• Regular spiral flute with 2-flute configuration promotes efficient chip removal
• Straight-cylindrical shank with 0.3770-inch diameter fits standard drill chucks without adapters
• Conforms to ANSI standards — Series R10-R15-R18

Compatibility

Designed as a general-purpose OEM-style jobber-length drill bit compatible with standard drill chucks accepting a 0.3770-inch straight-cylindrical shank, including drill presses, hand drills, and CNC machining centers.

Installation Notes

Installation is performed by machinists and maintenance mechanics using a standard drill chuck sized for a 0.3770-inch shank. Secure the shank fully in the chuck and confirm concentricity before drilling. Use appropriate cutting fluid or coolant when drilling stainless steel, superalloys, or titanium to extend tool life. Inspect the cutting edges for wear before each use and replace the bit if chipping or rounding is observed.