Hertel 02387488 Screw Machine Drill Bit Size 55 Tin Hss

Product Description

The HERTEL 02387488 is a screw machine length drill bit designed for short-hole drilling in metal, plastic, and composite materials. Built from high-speed steel (HSS) with a titanium nitride (TiN) coating, it delivers extended wear resistance and reduced friction in high-cycle production environments. The 135-degree split point promotes self-centering on contact, reducing the need for a center punch on most metal surfaces. At 1.625 inches overall length with a 0.625-inch flute length, this stub-length geometry provides added rigidity, making it well-suited for CNC drill presses, turret lathes, and screw machine operations where deflection must be minimized.

This bit is sized to wire gauge Number 55, corresponding to 0.0520 inch decimal diameter, placing it in the small-diameter range used for tapping prep, instrument work, and precision machining. It is a single-piece per package item requiring a minimum order of 12 units, making it appropriate for shop floor replenishment in production machining, maintenance, and tool crib settings. The straight cylindrical shank fits standard collets and drill chucks compatible with 0.0520-inch shank diameter.

Key Features

• HSS construction with TiN coating for improved surface hardness and extended tool life
• 135-degree split point for self-centering entry and reduced thrust force
• Screw machine (stub) length provides increased rigidity and reduced deflection
• Regular spiral flute with web-thinned, parallel web configuration for efficient chip evacuation
• Right-hand cutting direction, compatible with standard drill press and CNC spindle rotation
• No coolant-through requirement — suitable for dry or flood-coolant applications

Compatibility

Designed as an OEM-style replacement or replenishment drill bit for use in standard drill chucks and collet systems accepting a 0.0520-inch straight cylindrical shank across screw machine, CNC, and bench drill press setups.

Installation Notes

Installation and use of this drill bit should be performed by a qualified machinist or tool operator following established shop safety procedures. Ensure the drill chuck or collet is fully tightened and the spindle is at a complete stop before inserting or removing the bit. For small-diameter bits at this size, use appropriate RPM settings per your material cutting speed charts to avoid bit breakage. Inspect the cutting edges for wear or chipping before each use.