Sgs 66409 Screw Machine Drill Bit 15/64 in Solid Carbide

Product Description

The SGS 66409 is a screw machine length drill bit engineered for high-performance drilling across a wide range of materials. Built from micrograin solid carbide and coated with Ti-NAMITE-X, this bit delivers extended tool life and maintains dimensional accuracy through demanding production cycles. The 135-degree split point with web thinning reduces entry force and minimizes walking on workpiece surfaces. At 2.5984 inches overall length and a 15/64 inch (0.1535 inch) diameter, it is sized for compact drilling setups where standard length bits are too long. Licensed tradespeople and machining professionals in industrial maintenance and fabrication environments are the typical users.

This bit is suited for applications requiring tight hole tolerances in universal workpiece materials including steel, stainless, aluminum, cast iron, and plastics. The screw machine length profile makes it a practical choice for CNC machining centers, turret lathes, and drill presses where rigidity and reduced overhang matter. Coolant-through capability supports high-speed, high-feed drilling operations where heat management is critical to tool life and hole quality. The four-margin design improves hole straightness and surface finish compared to standard two-margin configurations.

Key Features

• Micrograin solid carbide construction for hardness and wear resistance
• Ti-NAMITE-X coating for thermal protection and extended tool life
• 135-degree standard point with web thinning reduces thrust and self-centers on entry
• Coolant-through design supports high-speed drilling operations
• Four-margin geometry improves hole roundness and surface finish
• Straight-cylindrical shank fits standard drill chucks and collets
• DIN 6537 specification compliance for dimensional consistency

Compatibility

Designed as a high-performance OEM-style screw machine drill bit for use in CNC machining centers, turret lathes, and drill presses accepting a 0.2300 inch straight-cylindrical shank. Fits Series 142P tooling configurations.

Installation Notes

Installation and tool changes should be performed by a qualified machinist or tool and die professional with the machine powered down and locked out per OSHA lockout/tagout procedures. Secure the straight-cylindrical shank in a properly sized collet or drill chuck to the chuck manufacturer's recommended clamping procedure. Verify coolant-through lines are clear and delivering adequate flow before beginning high-speed operations. Do not use this bit at feeds or speeds outside the tool manufacturer's published parameters for the workpiece material.