Hertel C.40N.2937 Screw Machine Drill Bit 1-5/32 in Hss

Product Description

The HERTEL C.40N.2937 is a screw machine length drill bit designed for high-production drilling in metal fabrication, maintenance, and industrial trade work. Built from high-speed steel with a bright uncoated finish, this bit measures 1-5/32 inches (1.1562 inches decimal) in diameter and features a 118-degree conventional point angle suited for general-purpose drilling in a wide range of materials. The shorter screw machine length body provides increased rigidity over jobber-length bits, reducing deflection in tight or confined drilling applications. Overall length is 6-3/4 inches with a 4-inch flute length. Right-hand cutting direction. Weighs approximately 1 pound.

This bit is appropriate for use in machine shops, mechanical contractors, and industrial maintenance environments where accurate, rigid hole-making in ferrous and non-ferrous metals is required. The screw machine length profile is commonly used in drill presses, turret lathes, CNC machining centers, and production drilling fixtures where chuck clearance is limited and a stiffer drill body improves hole quality and repeatability. General-purpose grade suits mild steel, aluminum, brass, and similar materials encountered in day-to-day trade and fabrication work.

Key Features

• 1-5/32 inch (1.1562 inch decimal) diameter for large-bore drilling applications
• 118-degree conventional point angle for general-purpose use across common metals
• High-speed steel construction provides heat and wear resistance in production settings
• Screw machine length body increases rigidity and reduces deflection versus jobber-length bits
• Bright uncoated finish — no coating buildup to affect dimensional tolerances
• Right-hand cutting direction compatible with standard drill press and machining center spindles

Compatibility

Designed as a general-purpose screw machine length drill bit suitable for use in standard drill presses, CNC machining centers, turret lathes, and production drilling fixtures that accept large-diameter straight or reduced-shank tooling. Confirm shank compatibility with your specific machine chuck or collet system before installation.

Installation Notes

Installation should be performed by a qualified machinist or industrial maintenance technician familiar with rotating cutting tool safety. Ensure the machine spindle is fully stopped and locked out before changing tooling. Verify chuck or collet grip is fully engaged on the shank before operation. Inspect the cutting edges for chips or wear before each use — a damaged edge on a large-diameter bit can cause workpiece damage or tool breakage under load.