Sgs 66429 Screw Machine Drill Bit 5.90 Mm Carbide

Product Description

The SGS 66429 is a screw machine length drill bit engineered for high-performance drilling in a wide range of workpiece materials. Built from micrograin solid carbide and coated with Ti-NAMITE-X, this bit delivers extended tool life and heat resistance in demanding production environments. The 135-degree split point with web thinning reduces thrust and promotes accurate entry without a center punch. At 2.5984 inches overall length with a 5.90 mm diameter, the short-length geometry provides added rigidity, making it well suited for CNC machining centers, drill presses, and automated equipment where deflection control is critical. Installation is performed by machinists and toolroom technicians working to close-tolerance applications.

The SGS 66429 is designed for universal workpiece materials including steel, stainless steel, cast iron, aluminum, and non-ferrous alloys. The coolant-through design channels cutting fluid directly to the cutting edge, extending tool life and improving chip evacuation during deep-hole cycles. The straight-cylindrical shank seats securely in standard drill chucks and collets. This bit fits production, job shop, and maintenance machining environments where consistent hole quality at 0.2323 decimal inch diameter is required.

Key Features

• Micrograin solid carbide construction for rigidity and wear resistance
• Ti-NAMITE-X coating reduces friction and extends tool life in high-speed applications
• 135-degree standard point with web thinning lowers entry thrust and improves hole accuracy
• Coolant-through design delivers fluid directly to the cutting zone for chip control and heat management
• 4-margin geometry enhances hole straightness and surface finish
• Short screw machine length body adds stiffness and reduces chatter compared to jobber-length bits

Compatibility

Designed as a direct-fit replacement for screw machine length drill bits in the 0.2000 to 0.2500 decimal inch diameter range. Straight-cylindrical shank is compatible with standard drill chucks and collets sized for a 6 mm shank diameter. Conforms to DIN 6537 specification.

Installation Notes

This bit is installed by machinists or toolroom personnel in CNC or manual drilling equipment. Verify spindle and collet or chuck are fully secured and within rated speed range before operation. Engage coolant-through supply at the spindle before starting the cut to protect the cutting edge. Do not exceed the maximum drilling depth of 1.1024 inches in a single pass without retracting to clear chips.