Hertel 61699732 Screw Machine Drill Bit Size 54 Hss

Product Description

The HERTEL 61699732 is a screw machine length drill bit designed for high-speed steel drilling applications where a shorter, more rigid tool is required. Built from high-speed steel with an oxide finish, this bit measures 1-5/8 inches overall length with a 5/8 inch flute length. It carries a wire gauge size of 54, equivalent to 0.0550 inches in decimal, and features a standard 118-degree point angle with a right-hand cut. The straight-cylindrical shank ensures secure seating in standard drill chucks and machine spindles. Licensed machinists, toolroom technicians, and production floor operators typically work with this type of bit for precision hole-making in metal, plastics, and composite materials.

This drill bit is suited for general-purpose drilling in both manual and CNC machine tool applications. The screw machine length profile reduces overhang and deflection compared to jobber-length bits, making it well suited for close-tolerance work in tight spaces or multi-spindle setups. The 3xD flute-to-diameter ratio supports chip evacuation in shallow holes. The oxide coating provides a degree of lubricity and mild corrosion resistance during use. It is appropriate for production environments, job shops, and maintenance operations requiring small-diameter precision drilling.

Key Features

• Wire gauge size 54 (0.0550 inches decimal) for small-diameter precision drilling
• High-speed steel construction suitable for general-purpose metal and plastic applications
• 118-degree standard point angle for compatibility with a wide range of workpiece materials
• Oxide coating provides mild lubricity and surface protection
• Screw machine length at 1-5/8 inches OAL reduces deflection and improves rigidity
• Right-hand cut with straight-cylindrical shank fits standard chucks and spindles
• ANSI specification designation confirms dimensional conformance

Compatibility

Designed as a general-purpose screw machine length drill bit for use in standard drill chucks and machine spindles accepting a straight-cylindrical shank at the 0.0550 inch diameter range.

Installation Notes

Installation and use of this bit should be performed by qualified machinists or toolroom personnel familiar with machine tool operation. Ensure the machine spindle is fully stopped and power is locked out before inserting or removing the bit from the chuck. Verify chuck capacity accommodates the straight-cylindrical shank diameter before seating. Apply appropriate cutting fluid for the workpiece material to extend tool life and maintain hole quality.