Hertel C.40N.3254 Screw Machine Drill Bit 1-9/32 in

Product Description

The HERTEL C.40N.3254 is a screw machine length drill bit designed for high-throughput drilling in metal fabrication, maintenance, and production environments. Built from high-speed steel with a bright, uncoated finish, it measures 1-9/32 inches (1.2812 inches decimal) in diameter and carries a standard 118-degree split-free point angle suited for general-purpose work in ferrous and non-ferrous materials. The shortened screw machine length body reduces deflection and improves rigidity compared to jobber-length bits, making it a common choice for drill press and CNC turret work where chuck clearance is limited. Machinists, tool-and-die technicians, and maintenance mechanics are the typical end users.

This drill bit is suited for general-purpose production drilling in shops, maintenance facilities, and trade applications where a large-diameter, rigid bit is required. The 1-9/32 inch diameter falls in the 0.6000 inch and above size range, placing it in heavy-duty hole-making territory for structural steel, plate stock, fixtures, and fabricated components. The right-hand cutting direction is standard for conventional drill press and lathe operations. Its compact overall length makes it practical for setups with limited spindle-to-work clearance.

Key Features

• 1-9/32 inch (1.2812 inch) diameter for large-bore hole making
• 118-degree point angle for general-purpose use in a wide range of materials
• High-speed steel construction provides heat resistance and edge retention under moderate cutting speeds
• Screw machine length body reduces deflection and improves rigidity vs. jobber-length bits
• Bright, uncoated finish — compatible with cutting fluids and oils without coating interaction concerns
• Right-hand cutting direction, standard for conventional drill press and turret applications

Compatibility

Designed as a general-purpose screw machine length drill bit for use in drill presses, CNC turrets, lathes, and milling machines that accept large-shank tooling. Suitable for drilling ferrous metals, non-ferrous metals, and plastics in production and maintenance settings.

Installation Notes

Installation and use should be performed by qualified machinists or maintenance mechanics familiar with large-diameter drilling operations. Secure the bit firmly in a properly sized chuck or collet before operation, and verify that spindle speed is appropriate for the workpiece material and bit diameter — large diameters require significantly reduced RPM compared to small bits. Apply cutting fluid or oil to extend tool life and manage heat buildup. Inspect the cutting edges for wear or chipping before each use and re-sharpen or replace as needed to maintain dimensional accuracy.