Cleveland C04356 Screw Machine Drill Bit Wire 60 Hss

Product Description

The CLEVELAND C04356 is a screw machine length (stub-length) drill bit designed for high-volume drilling in production and machining environments. Built from high-speed steel with a bright uncoated finish, this bit runs a standard 118-degree point angle with web thinning for easier penetration and reduced thrust. At 1.375 inches overall length with a 0.500-inch flute length, the short body provides rigidity and minimizes deflection in drill presses, CNC machines, and screw machines. The straight-cylindrical shank at 0.0400 inches diameter fits standard chucks without adapters. Two spiral flutes evacuate chips efficiently during general-purpose drilling. Machinists, tool-and-die technicians, and production operators are the primary installers.

This bit is sized at wire gauge number 60, equivalent to 0.0400 inches decimal, placing it in the sub-1/8-inch small-diameter category used for pilot holes, tap-drill operations, and precision through-holes in light-gauge material. Primary workpiece materials listed for this series include alloy steel and aluminum. The short flute length relative to diameter makes it well-suited for rigid setups where axial runout must be minimized. The Series 2120 designation identifies this as a Cleveland general-purpose production drill conforming to ASME B94.11M standards.

Key Features

• Wire gauge size 60 — 0.0400 inches decimal diameter for small-hole and tap-drill applications
• High-speed steel construction with bright uncoated finish for general-purpose use
• 118-degree standard point angle with web thinning for reduced entry thrust
• Short screw machine length — 1.375 inches OAL — maximizes rigidity and minimizes deflection
• Two spiral flutes with regular helix promote efficient chip evacuation
• Conforms to ASME B94.11M; diameter tolerance held to +0.0000 to -0.0005 inches

Compatibility

Designed as a general-purpose screw machine length drill bit suitable for use in drill presses, turret lathes, screw machines, and CNC machining centers accepting straight-cylindrical shanks in the 0.0400-inch diameter range. Primary workpiece materials per manufacturer specification include alloy steel and aluminum.

Installation Notes

Installation and operation of this drill bit should be performed by qualified machinists or toolroom technicians familiar with small-diameter drill practices. Secure the shank fully in a properly sized chuck or collet before operation, and verify spindle runout is within acceptable limits to prevent bit breakage at this diameter. Ensure the workpiece is clamped securely and use appropriate cutting fluid or lubrication as required by the workpiece material. Do not exceed the recommended feed and speed parameters for the workpiece material and machine setup.