Hertel 61699633 Screw Machine Drill Bit Size 45 Hss

Product Description

The HERTEL 61699633 is a screw machine length drill bit designed for high-speed drilling in metal, wood, and general-purpose materials. Built from high-speed steel (HSS) with an oxide coating, it delivers heat resistance and extended tool life in production and repair environments. The bit features a 118-degree standard point angle for accurate starting without a center punch in most applications. At 1.75 inches overall length with a 0.75-inch flute length, this stub-length design provides added rigidity and reduces deflection in close-tolerance or short-reach drilling operations. Machinists, tool-and-die technicians, and general maintenance professionals are the primary users of this bit style.

This screw machine drill bit is suited for bench drill presses, CNC drilling centers, turret lathes, and hand-held drill applications where a compact, rigid bit is preferred over jobber-length tooling. The wire gauge size 45 (0.0820 inch decimal equivalent) is commonly used for tap drilling, reaming prep, and precision hole work in light-gauge metals and plastics. The straight cylindrical shank fits standard drill chucks without adapters. Its general-purpose grade makes it appropriate for both one-off shop tasks and short-run production work.

Key Features

• Wire gauge size 45 with 0.0820 inch decimal equivalent for precise hole sizing
• 118-degree standard point angle for self-centering starts on flat stock
• High-speed steel construction with oxide finish for heat and wear resistance
• Screw machine (stub) length at 1.75 inches OAL for maximum rigidity and reduced deflection
• Right-hand cutting with regular spiral flute for efficient chip evacuation
• Straight cylindrical shank fits standard drill chucks directly

Compatibility

Designed as a general-purpose screw machine length drill bit conforming to ANSI specification, compatible with standard drill chucks and collet systems that accept straight cylindrical shanks in this diameter range.

Installation Notes

Installation and use of this bit should be performed by machinists or qualified trade professionals familiar with drilling equipment and speeds appropriate for the workpiece material. Secure the shank fully in the chuck and verify concentricity before running at speed. Always wear appropriate eye protection and secure the workpiece before drilling. Follow machine manufacturer guidelines for spindle speed and feed rate based on material type and bit diameter.