Dormer Pramet 5980494 Screw Machine Drill Bit 15/64 in

Product Description

The DORMER PRAMET 5980494 is a screw machine length drill bit designed for metalworking and multipurpose holemaking applications. Built from solid carbide, it delivers the rigidity and heat resistance needed for drilling in harder materials where high-speed steel tooling falls short. The 140-degree point angle promotes self-centering and reduces thrust force at entry. With an overall length of 66 millimeters, the stub-length body provides added stiffness and minimizes deflection in short-reach setups. This bit is intended for use in CNC machining centers, drill presses, and turret lathes operated by machinists and tool-and-die professionals.

Screw machine length drill bits are well suited for production environments where rigidity matters more than reach. The compact overall length makes this bit a practical choice for drilling in fixtures, jigs, and tight work envelopes common in metal fabrication shops. The right-hand spiral flute geometry promotes chip evacuation during through-hole and blind-hole drilling in ferrous and non-ferrous metals. The straight cylindrical shank is compatible with standard drill chucks and collet holders across a wide range of machine tool spindles.

Key Features

• Solid carbide construction for superior rigidity and wear resistance compared to high-speed steel
• 140-degree split-style point angle for self-centering and reduced entry thrust
• Right-hand spiral flute design promotes efficient chip evacuation
• Stub screw machine length body minimizes deflection in short-reach setups
• Straight cylindrical shank fits standard drill chucks and collet systems
• Series R458 designation for straightforward replacement and tooling catalog reference

Compatibility

Designed as a standard screw machine length drill bit for use in metalworking drill presses, CNC machining centers, and turret lathes equipped with compatible straight-shank chuck or collet toolholding systems.

Installation Notes

This drill bit is installed and serviced by machinists or qualified machine tool operators. Ensure the machine spindle is fully stopped and the tool is de-energized before changing tooling. Secure the straight shank firmly in the chuck or collet to the manufacturer-specified clamping torque using appropriate toolholding hardware. Inspect the cutting edges for wear or chipping before each use, and replace the bit when edge condition degrades to prevent workpiece damage or tool breakage.