Hertel 16704975 Screw Machine Drill Bit 25 Solid Carbide

Product Description

The HERTEL 16704975 is a solid carbide screw machine length drill bit designed for high-performance drilling in demanding materials. Built to wire gauge size 25 with a decimal equivalent of 0.1495 inches, this bit features a 135-degree split-point angle that reduces walking and improves hole accuracy on entry. The screw machine length format provides a shorter, more rigid profile than jobber-length bits, making it well suited for use in tight spaces and in drill press or CNC applications. It carries a bright, uncoated finish and a slow spiral flute design optimized for chip evacuation in difficult-to-machine materials. Licensed HVAC, mechanical, and industrial trades install this type of tooling in production and maintenance environments.

This drill bit is rated for use in cast iron, nickel alloy, stainless steel, titanium alloy, and tool steel. The solid carbide construction maintains hardness and edge integrity at elevated cutting temperatures, making it appropriate for production runs and precision work where high-speed steel tooling would wear prematurely. Its straight cylindrical shank fits standard drill chucks without modification, and the 1-inch flute length handles typical screw machine depth applications.

Key Features

• Wire gauge size 25, decimal equivalent 0.1495 inches for precise hole sizing
• 135-degree point angle reduces drill walk and improves entry accuracy
• Solid carbide construction for extended tool life in hard and abrasive materials
• Slow spiral flute geometry optimized for cast iron, stainless steel, and titanium alloy
• Bright, uncoated finish — no additional coating to affect hole tolerances
• Straight cylindrical shank for compatibility with standard drill chucks

Compatibility

Designed as a screw machine length replacement drill bit for use in standard drill press, turret lathe, or CNC machining center setups requiring a straight cylindrical shank and wire gauge size 25 tooling.

Installation Notes

This bit is installed and used by machinists and industrial maintenance technicians. Secure the shank fully in the chuck before operation and verify chuck runout is within acceptable tolerance for the application. Solid carbide tooling is brittle compared to high-speed steel — avoid side loading and interrupted cuts where possible. Follow machine tool manufacturer guidelines for spindle speed and feed rate when drilling the listed workpiece materials.