Cleveland C04357 Screw Machine Drill Bit No. 59 Hss

Product Description

The CLEVELAND C04357 is a screw machine length (stub length) drill bit in wire gauge size No. 59, with a decimal diameter of 0.0410 inches. Built from high-speed steel (HSS) with a bright, uncoated finish, it features a standard 118-degree split point and two spiral flutes with web thinning for improved penetration and reduced thrust. The short overall length of 1-3/8 inches provides rigidity in tight clearance situations and reduces deflection during drilling, making it well suited for precision work on drill presses, CNC equipment, and manual lathes. It meets ASME B94.11M standards and carries ANSI specification designation.

This bit is designed for general-purpose drilling in alloy steel and aluminum, along with other common ferrous and non-ferrous materials encountered in machining, fabrication, and light industrial applications. The straight cylindrical shank at 0.0410 inches diameter fits standard drill chucks without adapters. The 1/2-inch flute length accommodates shallow-to-moderate hole depths typical of screw machine work. Machinists, tool and die technicians, and maintenance mechanics will encounter this size routinely in production drilling and fixture work.

Key Features

• Wire size No. 59, 0.0410-inch diameter with diameter tolerance of +0.0000 to -0.0005 inches
• High-speed steel construction with bright, uncoated finish for general-purpose use
• 118-degree standard point angle with web-thinned, parallel web for reduced entry thrust
• Screw machine (short) length at 1-3/8 inches OAL for increased rigidity and reduced runout
• Two spiral flutes, 1/2-inch flute length, right-hand cut
• Straight cylindrical shank, 7/8-inch shank length, no coolant-through required

Compatibility

Designed as a general-purpose replacement or production drill bit for screw machine operations requiring wire gauge No. 59 diameter in HSS; compatible with standard drill chucks accepting a 0.0410-inch straight shank.

Installation Notes

Installation and use should be performed by qualified machinists or maintenance technicians familiar with drilling operations. Always ensure the drill press, lathe, or CNC spindle is powered down and fully stopped before inserting or removing the bit from the chuck. Verify chuck capacity accommodates the 0.0410-inch shank diameter before clamping. Use appropriate cutting fluid for the workpiece material to extend tool life, even though this bit does not feature coolant-through channels.