Cleveland C04585 Screw Machine Drill Bit 13/32 in Hss

Product Description

The CLEVELAND C04585 is a screw machine length drill bit designed for precision hole-making in metal fabrication, machining, and general industrial applications. Built from high-speed steel (HSS) with a bright/uncoated finish, this short-length drill delivers rigidity and accuracy in tight-clearance setups. The 118-degree split point and web-thinned geometry reduce walking on entry and lower thrust requirements, making it well suited for production drilling. At 3-5/16 inches overall length with a 1-15/16 inch flute length, the compact form factor fits standard drill chucks and CNC turrets without extension. Diameter is 13/32 inch (0.4062 inch decimal), held to a tight tolerance of +0.0000 to -0.0010 inch per ASME B94.11M.

This drill bit is intended for use in manual drill presses, turret lathes, CNC machining centers, and screw machine operations where a shorter flute-to-length ratio improves hole straightness and reduces chatter. Primary workpiece materials include alloy steel and aluminum. The straight-cylindrical shank measures 0.4063 inch in diameter and 1-3/8 inches in length, fitting directly into standard three-jaw chucks and collet holders. It is a general-purpose Series 2120 tool suited for job shops, maintenance machinists, and production floor applications requiring consistent, repeatable hole quality.

Key Features

• 13/32 inch (0.4062 inch) diameter held to +0.0000 / -0.0010 inch tolerance per ASME B94.11M
• 118-degree standard point angle with web-thinned, parallel web configuration for reduced entry thrust
• High-speed steel construction provides toughness and heat resistance for general-purpose metal drilling
• Screw machine (short) length at 3-5/16 inches OAL increases rigidity and reduces deflection
• Right-hand cut with 2-flute regular spiral geometry for efficient chip evacuation
• Bright/uncoated finish — compatible with cutting fluids and suitable for regrinding

Compatibility

Designed as a general-purpose screw machine length drill bit for use in alloy steel and aluminum workpieces. Fits any standard drill press, turret lathe, or machining center chuck or collet accepting a 0.4063 inch straight-cylindrical shank.

Installation Notes

Installation and operation should be performed by a qualified machinist or tooling technician familiar with rotating cutting tools. Ensure the workpiece is securely fixtured and the spindle is at a full stop before inserting or removing the bit from the chuck or collet. Apply appropriate cutting fluid for the workpiece material to extend tool life and improve surface finish. Inspect the cutting edges and web for wear or chipping before each use; a damaged point should be reground or the bit replaced before continuing production.