Precision Twist Drill 5996345 Letter H Hss Jobber Drill

Product Description

The PRECISION TWIST DRILL 5996345 is a Letter H (17/64 inch, 0.2656 inch decimal) high-speed steel jobber drill bit designed for general-purpose and heavy-duty drilling applications. Built from M2 HSS with a bronze (straw) coating, it features a 135-degree split point with web thinning for fast starts and reduced walking on hard materials. The right-hand spiral flute geometry suits metals including high-temperature alloys. Licensed HVAC, plumbing, and mechanical contractors as well as professional machinists and fabricators rely on this type of bit for precision hole work in ferrous and non-ferrous materials.

The 5996345 is suited for drilling into high-temperature alloys, steel, cast iron, and non-ferrous metals in both production and maintenance environments. Its 4.125-inch overall length and 2.875-inch flute length make it a standard jobber-length bit appropriate for drill presses, hand drills, and CNC equipment. The straight cylindrical shank with a 0.2656-inch diameter fits standard 3-jaw chucks without adapters. This bit is part of the HX10-HX15-HX18 series.

Key Features

• 135-degree split point with web thinning for self-starting entry and reduced thrust
• M2 high-speed steel construction rated for heavy-duty use
• Bronze (straw) coating provides lubricity and heat resistance
• Regular spiral, 2-flute design for efficient chip evacuation
• Tapered web configuration for rigidity along the flute length
• Meets ANSI standards; 0-flat straight cylindrical shank for universal chuck compatibility

Compatibility

Part of the PRECISION TWIST DRILL HX10-HX15-HX18 series. Designed for use in standard 3-jaw drill chucks accepting a 17/64 inch straight cylindrical shank. Suitable for drilling high-temperature alloys and general steels as indicated by material grade codes P, M, K, and S.

Installation Notes

Install in a properly sized 3-jaw chuck or collet rated for the 0.2656-inch shank diameter and secure firmly before operation. Power down and de-energize any machine tool completely before changing bits. Always wear appropriate eye protection and secure the workpiece to prevent movement during drilling. Follow machine manufacturer RPM recommendations for the material and drill diameter being used.