Sgs 66442 Screw Machine Drill Bit 7.2 Mm Solid Carbide

Product Description

The SGS 66442 is a screw machine length drill bit engineered for high-performance drilling across a wide range of workpiece materials. Built from micrograin solid carbide and finished with a proprietary Ti-NAMITE-X coating, this bit delivers rigidity and wear resistance suited to demanding production environments. It features a 137-degree drill point angle with web thinning for fast, clean entry, and a right-hand spiral flute design that efficiently clears chips. Overall length is 3.1102 inches with a flute length of 1.6094 inches. Coolant-through capability supports high-speed applications where heat management is critical. Installed by machinists and tooling professionals in CNC and manual drilling operations.

The 66442 is designed for screw machine length drilling applications where a compact, rigid setup is required. Its universal workpiece material rating makes it suitable for ferrous metals, non-ferrous alloys, and engineered plastics. The straight shank with a diameter of 0.3100 inches fits standard drill chucks and collet holders. The 3xD flute-to-diameter ratio and 4-margin geometry contribute to hole straightness and finish quality. This bit conforms to DIN 6537 specification and is appropriate for both manual and CNC-controlled machine tools in production and maintenance settings.

Key Features

• Micrograin solid carbide construction for extended tool life in high-cycle applications
• Ti-NAMITE-X proprietary coating reduces friction and improves wear resistance
• 137-degree drill point angle with web thinning for reduced thrust and fast engagement
• Coolant-through design supports high-speed drilling and effective heat dissipation
• 4-margin geometry promotes hole straightness and improved surface finish
• Conforms to DIN 6537 specification for consistent dimensional standards

Compatibility

Designed as a screw machine length carbide drill bit rated for universal workpiece materials including ferrous metals, non-ferrous alloys, and plastics; compatible with standard drill chucks and collet holders accepting a 0.3100-inch straight shank.

Installation Notes

Installation and tool changes should be performed by qualified machinists or tooling technicians with the machine powered down and spindle fully stopped. Secure the straight shank firmly in a compatible chuck or collet to the manufacturer-specified clamping depth before operation. Coolant-through setups should be verified for proper flow and pressure before beginning a drilling cycle. Handle solid carbide tooling with care to avoid chipping the cutting edges during storage or setup.