Hertel 66692088 Cobalt Screw Machine Drill Bit Size 32

Product Description

The HERTEL 66692088 is a cobalt screw machine length drill bit designed for high-speed, short-hole drilling applications where rigidity and heat resistance matter. Built from heavy-duty cobalt steel and coated with titanium nitride (TiN), this bit handles hard metals, stainless steel, and abrasive materials that wear out standard HSS tooling quickly. The 135-degree split point starts on contact without a center punch and reduces walking on curved or uneven surfaces. At 1-7/8 inches overall length, the stubby profile reduces deflection and is well suited to drill press and CNC turret work where clearance is limited.

Screw machine length drill bits are a standard choice in production machining, tool rooms, and fabrication shops. The short overall length provides added stiffness compared to jobber-length bits, making this size appropriate for tight-tolerance through-holes and blind holes in ferrous and non-ferrous metals. The straight-cylindrical shank fits standard three-jaw chucks and collet holders without modification. Machinists, tool-and-die tradespeople, and metalworking fabricators will find this bit at home in bench drill presses, knee mills, and CNC drilling cycles.

Key Features

• Cobalt construction rated for heavy-duty use in hard and abrasive materials
• TiN coating reduces friction and extends cutting edge life
• 135-degree split point for self-centering starts and reduced thrust force
• Web-thinned parallel web design improves chip evacuation and lowers cutting resistance
• Right-hand spiral flute clears chips efficiently during through-hole drilling
• Straight-cylindrical shank fits standard chucks and collet holders

Compatibility

Designed as a direct-fit replacement for standard wire gauge size 32 screw machine length drill bits with a 0.1160-inch diameter straight-cylindrical shank. Fits any three-jaw drill chuck or collet holder accepting that shank diameter.

Installation Notes

Installation and use should be performed by a qualified machinist or metalworking professional. Secure the shank fully in the chuck or collet before beginning any drilling cycle and confirm the workpiece is properly fixtured or clamped. Apply appropriate cutting fluid when drilling ferrous metals to manage heat and extend tool life. Do not exceed the rated speed range for the workpiece material and bit diameter.