Hertel 89321228 Screw Machine Drill Bit 1 in Hss

Product Description

The HERTEL 89321228 is a screw machine length drill bit designed for general-purpose drilling in metal, wood, and similar materials. Built from high-speed steel with a bright uncoated finish, it measures 1 inch in diameter with an overall length of 6 inches and a flute length of 4 inches. The 118-degree point angle is the standard geometry for versatile use across a wide range of workpiece materials. Right-hand cut configuration suits the vast majority of drilling applications. This bit is sized for larger-bore work and is a common tool in machine shops, maintenance facilities, and fabrication environments.

Screw machine length drill bits are shorter than jobber-length bits, offering increased rigidity and reduced deflection during drilling operations. This makes the 89321228 well suited for use in drill presses, CNC machines, turret lathes, screw machines, and manual machine tool setups where a stiffer, more controllable drill is required. Typical users include machinists, millwrights, maintenance technicians, and fabricators working in production or repair environments.

Key Features

• 1-inch diameter for large-bore drilling applications
• 118-degree point angle for general-purpose use across common workpiece materials
• High-speed steel construction provides heat resistance during moderate-speed drilling
• Screw machine length body (6 inches OAL) offers greater rigidity than jobber-length equivalents
• 4-inch flute length supports chip evacuation in deeper cuts
• Bright uncoated finish suitable for general-purpose and low-abrasion materials
• Right-hand cut for standard clockwise-rotation spindles

Compatibility

Designed as a general-purpose screw machine length drill bit compatible with drill presses, CNC machining centers, turret lathes, and other machine tool spindles accepting a 1-inch diameter shank. Verify spindle chuck capacity and machine horsepower before use with large-diameter bits.

Installation Notes

Ensure the machine spindle is fully stopped and locked out before installing or removing the drill bit. Secure the bit firmly in the chuck or collet to the full recommended engagement depth to prevent slippage under load. Use appropriate cutting fluid or coolant for the workpiece material to extend tool life and manage heat at larger diameters. Follow applicable shop safety standards and machine manufacturer guidelines during setup and operation.