Hertel 61699807 Screw Machine Drill Bit Wire 39 Hss

Product Description

The HERTEL 61699807 is a screw machine length drill bit designed for high-volume drilling in metal, plastic, and other general-purpose materials. It carries a wire gauge size of 39, equal to 0.0995 inches in decimal, with a 118-degree standard point angle for accurate starting and clean penetration. The shortened screw machine length overall length of 1-13/16 inches provides added rigidity compared to jobber-length bits, reducing deflection in tight clearance applications. The high-speed steel construction with an oxide coating improves lubricity and wear resistance during continuous use. Machinists, tool-and-die technicians, and general metalworking pros reach for this bit in CNC, turret, and manual drill press applications.

This bit is suited for production drilling in machine shop and light industrial environments. The screw machine length format makes it a common choice for drill press work, turret lathes, and screw machine setups where stub-length rigidity is required. The straight cylindrical shank accepts standard drill chucks without modification. General-purpose grade makes it appropriate for mild steel, aluminum, brass, thermoplastics, and similar workpiece materials at standard cutting speeds.

Key Features

• Wire size 39 diameter - 0.0995 inches decimal equivalent
• 118-degree standard point angle for general-purpose entry and self-centering
• High-speed steel construction for durability across ferrous and non-ferrous materials
• Oxide coating reduces friction and improves chip evacuation
• Screw machine (stub) length overall at 1-13/16 inches for added rigidity
• Right-hand cut with 2-flute regular spiral geometry
• Straight cylindrical shank fits standard drill chucks directly

Compatibility

Designed as a general-purpose screw machine length drill bit compatible with any standard drill chuck accepting a straight cylindrical shank in the applicable diameter range.

Installation Notes

Installation is performed by machinists or tool technicians. Secure the shank fully in a drill chuck or collet and confirm runout before cycling. Ensure the machine spindle is at a dead stop before changing bits. Follow applicable shop safety standards and machine manufacturer guidelines for speed and feed selection based on workpiece material.