Hertel 66692401 Jobber Drill Bit 13/64 Inch Hss Tialn

Product Description

The HERTEL 66692401 is a TiAlN-coated high speed steel jobber-length drill bit designed for general-purpose holemaking in metal, wood, and composite materials. It carries a 135-degree split point that reduces walking on entry and lowers the thrust needed to start a hole. The two-flute spiral design clears chips efficiently during through-hole and blind-hole drilling. At 3.625 inches overall length with a 2.4375-inch flute length, the bit fits standard drill chucks and CNC tool holders with a straight cylindrical shank. The heavy-duty grade designation and web-thinned, tapered web geometry make it suitable for production drilling environments where tool life and hole accuracy matter.

This bit is intended for use by machinists, maintenance technicians, metalworking fabricators, and general trade professionals. It is well suited to light-production and job-shop applications where a reliable general-purpose drill is needed for ferrous and non-ferrous materials. The TiAlN coating increases surface hardness and heat resistance, extending tool life in higher-speed cutting operations compared to uncoated HSS. The right-hand cutting direction and regular spiral type are compatible with conventional drill press, handheld drill, and CNC drilling setups.

Key Features

• 135-degree split point reduces center-walking and lowers entry thrust
• TiAlN coating improves heat resistance and extends tool life in metal drilling
• Web-thinned, tapered web geometry reduces cutting resistance and improves chip flow
• Straight cylindrical shank fits standard three-jaw chucks and collet holders
• Right-hand, regular spiral flute design provides reliable chip evacuation
• Heavy-duty grade construction rated to NAS specification

Compatibility

Designed as an OEM-style replacement or direct-use jobber drill bit for standard drill presses, handheld drills, and CNC drilling spindles accepting a 0.2031-inch straight cylindrical shank.

Installation Notes

Installation and use of this drill bit should be performed by qualified machinists or trade professionals familiar with cutting tool safety practices. Secure the shank fully in the chuck or collet before operation and verify the tool is concentric to avoid runout. Power down and de-energize any machine tool before changing bits. Do not exceed the recommended speed and feed range for the material being drilled or the coating life will be reduced prematurely.