Hertel 77430593 Solid Carbide Spade Drill Bit 0.25 in

Product Description

The HERTEL 77430593 is a solid carbide spade drill bit designed for precision drilling in hard steel and high-strength materials. Ground to a 118-degree included point angle and finished with a bright polished surface, this bit delivers clean entry and consistent hole geometry in demanding applications. The 0.25-inch diameter is held to a tight tolerance of +0.0000 to -0.0005 inches, making it well-suited for work where dimensional accuracy matters. At 2 inches overall length with an 11/16-inch flute length, it fits standard drill chucks and CNC toolholders used in machining and fabrication environments.

This bit is intended for use in hard steel and high-strength material applications where standard HSS tooling loses performance. Typical install scenarios include CNC machining centers, drill presses, and hand-held pneumatic drills used in precision metal fabrication, tooling, and industrial maintenance. The solid carbide construction makes it appropriate for shops running high-cycle operations where tool life and hole consistency are critical. Each unit is packaged individually.

Key Features

• Solid carbide construction for extended tool life in hard and high-strength steels
• 118-degree point angle for clean, accurate entry into ferrous metals
• Bright polished finish reduces friction and aids chip evacuation
• Tight diameter tolerance of +0.0000 to -0.0005 inches for precise hole sizing
• Compact 2-inch overall length fits standard and CNC drill setups

Compatibility

Designed for use in hard steel and high-strength material applications. Fits standard 0.25-inch drill chucks and collet-style toolholders used in manual and CNC drilling operations.

Installation Notes

Installation and use should be performed by a qualified machinist or tooling technician familiar with cutting tool handling. Secure the bit firmly in the chuck or collet before operation and verify runout before drilling. Solid carbide is brittle compared to HSS tooling — avoid side loading or flexing the shank during use. Follow the machine manufacturer and tooling guidelines for appropriate feed rate and spindle speed for the workpiece material.