Sgs 66422 Screw Machine Drill Bit 5.20mm Solid Carbide

Product Description

The SGS 66422 is a screw machine length drill bit designed for high-performance drilling in a wide range of workpiece materials. Built from micrograin solid carbide and coated with Ti-NAMITE-X, it delivers extended tool life and heat resistance in demanding production environments. The 135-degree split point and web-thinned geometry reduce thrust force and improve centering at entry. With an overall length of 2.5984 inches and a 5.20 mm diameter, this bit fits standard CNC machining centers, drill presses, and screw machine setups. Installation and operation are handled by machinists and tooling technicians in shop environments.

This bit is suited for production drilling in metals, composites, and universal workpiece materials where tool consistency and tight diameter tolerances matter. The straight-cylindrical shank measures 6 mm in diameter and 1.4173 inches in length, making it compatible with standard collet and chuck systems. Coolant-through capability supports high-speed drilling cycles by delivering cutting fluid directly to the cutting zone, reducing heat buildup and chip evacuation issues. The Series 142P design conforms to DIN 6537 specification, a common standard in precision machining and toolroom environments.

Key Features

• Micrograin solid carbide construction for rigidity and wear resistance in high-cycle applications
• Ti-NAMITE-X coating improves surface hardness and reduces friction at the cutting edge
• 135-degree standard point with web thinning for reduced entry thrust and accurate hole positioning
• Coolant-through design delivers fluid directly to the cutting zone for chip control and thermal management
• 4-margin geometry provides enhanced bore straightness and surface finish
• Diameter tolerance of plus 0.00016 to plus 0.00063 inches ensures consistent hole sizing across production runs

Compatibility

Designed as a DIN 6537-compliant screw machine length drill bit for use in CNC machining centers, drill presses, and screw machine applications with standard collet or drill chuck systems accepting a 6 mm straight-cylindrical shank.

Installation Notes

This bit is installed and operated by machinists or tooling technicians in machine shop environments. Ensure the machine spindle is fully stopped and locked out before changing tooling. Verify collet or chuck bore size matches the 6 mm shank diameter before seating the bit. When using coolant-through capability, confirm the machine spindle and toolholder are equipped for through-coolant delivery before enabling coolant flow.