Harvey Tool 20295-C3 Micro Drill Bit Size 60 Solid Carbide

Product Description

The HARVEY TOOL 20295-C3 is a solid carbide micro drill bit designed for precision drilling in demanding small-diameter applications. Built to wire gauge size 60, the bit measures 0.0400 inches in diameter with an overall length of 1.5000 inches and a flute length of 0.3950 inches. The 130-degree split-style point geometry supports accurate entry and reduces walking on contact. An AlTiN coating improves heat resistance and tool life in ferrous and hardened materials. The right-hand spiral flute promotes consistent chip evacuation in deep or interrupted cuts. This bit is part of the HARVEY TOOL Miniature Drills series and is intended for use by machinists, toolmakers, and precision fabricators working with CNC mills, drill presses, or manual micro-drilling setups.

The 20295-C3 is suited for high-precision work in applications where small-diameter holes are required, including mold and die work, medical device components, electronics fixtures, and aerospace detail parts. The 1/8-inch shank diameter allows the bit to seat in standard collets and chucks commonly found in CNC machining centers and benchtop drilling equipment. It is appropriate for use in both production and prototype environments where dimensional accuracy and surface finish at the bore entry are critical.

Key Features

• Wire gauge size 60 at 0.0400 inches decimal diameter for tight-tolerance small-hole work
• Solid carbide construction provides rigidity and wear resistance in hard and abrasive materials
• AlTiN coating extends tool life and improves performance in dry or minimal-lubrication cutting conditions
• 130-degree point angle reduces thrust force and improves entry accuracy on flat and curved surfaces
• Right-hand spiral flute design promotes chip evacuation and reduces chip re-cutting
• 1/8-inch shank fits standard collets and drill chucks without adapters in most setups

Compatibility

Designed for use in CNC machining centers, drill presses, and manual drilling stations equipped with collets or chucks that accept a 1/8-inch shank diameter. Part of the HARVEY TOOL Miniature Drills series.

Installation Notes

Installation and use of this micro drill bit should be performed by a qualified machinist familiar with small-diameter tooling. Secure the 1/8-inch shank firmly in a collet or drill chuck rated for the intended spindle speed before operation. Micro-diameter carbide tools are brittle — avoid side loading, excessive feed rates, or interrupted cuts without proper pecking cycles. Always verify runout on the shank before beginning a production run to prevent premature breakage.