Hertel 61699658 Screw Machine Drill Bit 0.052in Hss

Product Description

The HERTEL 61699658 is a screw machine length drill bit designed for short-hole drilling in metal, plastic, and general-purpose materials. Built from high speed steel with an oxide finish, this bit offers a 0.052 inch (wire size 55) cutting diameter and a 118-degree standard point angle. The screw machine length format provides a shorter, more rigid profile than jobber-length bits, reducing deflection and improving hole accuracy in production and bench-drill applications. Two spiral flutes evacuate chips efficiently during cutting. The straight-cylindrical shank seats securely in standard drill chucks. This bit is used by machinists, maintenance technicians, and trade professionals who require consistent small-diameter hole performance.

This bit is suited for short-reach drilling operations on drill presses, CNC machines, and hand-held power drills in production shops, maintenance facilities, and light fabrication environments. The general-purpose grade and standard point geometry make it a reliable choice for ferrous and non-ferrous metals, plastics, and composite materials in both residential and commercial maintenance contexts. The 3xD flute-to-diameter ratio supports controlled chip removal in shallow-hole applications.

Key Features

• Wire size 55 cutting diameter - 0.052 inches for precision small-diameter holes
• 118-degree standard point angle for general-purpose entry into metal and plastic
• High speed steel construction with oxide finish for corrosion and heat resistance
• Screw machine length body (1-5/8 inches overall, 5/8 inch flute) reduces deflection vs. jobber-length bits
• Right-hand spiral flute geometry evacuates chips cleanly during drilling
• Straight-cylindrical shank fits standard drill chucks without adapters

Compatibility

Designed as a general-purpose screw machine length drill bit compatible with standard drill chucks accepting straight-cylindrical shanks across drill presses, benchtop drill units, and hand-held power drills.

Installation Notes

Secure the shank fully in the drill chuck before operating and confirm the chuck is tightened with the key before starting the spindle. Use appropriate cutting fluid or lubricant when drilling ferrous metals to extend bit life and improve hole finish. Replace bits that show signs of chipping, burning, or loss of cutting edge rather than attempting to redress small-diameter high speed steel bits in the field. Follow applicable shop safety standards and machine guarding requirements during use.