Cleveland C70323 Screw Machine Drill Bit Size 19 Hss

Product Description

The CLEVELAND C70323 is a screw machine length drill bit designed for high-production and general-purpose drilling in metal fabrication and machining applications. Built from high-speed steel with a bright, uncoated finish, this bit features a 135-degree split point that reduces walking and requires no center punch on most materials. The web-thinned geometry lowers thrust requirements and improves chip evacuation. At 2.125 inches overall length and 0.1660 inch diameter, this is a compact, stubby-format bit intended for drill press, turret lathe, and screw machine work where rigidity and hole accuracy are the priority.

This bit is suited for drilling alloy steel and aluminum in both shop and production environments. The screw machine length format provides extra rigidity compared to jobber-length bits, reducing deflection in short-hole drilling scenarios. It is a common choice for machinists, tool and die makers, and CNC setup technicians working on close-tolerance work where a wire gauge size 19 hole is required. The straight-cylindrical shank seats in standard drill chucks without modification.

Key Features

• Wire size 19 (0.1660 inch diameter) with a diameter tolerance of +0.0000 to -0.0007 inches for consistent hole sizing
• 135-degree split point reduces thrust and eliminates center-punch requirement on most metals
• Web-thinned, parallel web construction improves chip flow and lowers cutting resistance
• Screw machine length format delivers superior rigidity over jobber-length bits in short-hole applications
• High-speed steel construction rated for heavy-duty service per series 2330 grade designation
• Conforms to ASME B94.11M and NAS 907 Type C specifications

Compatibility

Designed as an OEM-style replacement or direct substitute for wire gauge size 19 screw machine length drill bits in standard drill chucks accepting a 0.1660 inch straight-cylindrical shank.

Installation Notes

Installation is performed by machinists or toolroom technicians in machine shop environments. Secure the shank fully in the drill chuck and verify concentricity before use. Always power down the machine and lock out the spindle before changing bits. Follow applicable shop safety standards and use appropriate cutting fluid for the workpiece material when drilling ferrous alloys.