Sgs 66431 Screw Machine Drill Bit 6.10mm Solid Carbide

Product Description

The SGS 66431 is a screw machine length drill bit engineered for high-performance drilling in demanding production and maintenance environments. Built from micrograin solid carbide and coated with the proprietary Ti-NAMITE-X finish, it delivers extended tool life and heat resistance under aggressive cutting conditions. The 135-degree split point with web thinning reduces thrust and enables fast penetration without the need for a center punch. At 6.10 mm in diameter with a 3.1102-inch overall length, this bit is sized for precision work where stub-length rigidity is required. Licensed tradespeople and toolroom machinists specify this series when cycle times and hole quality are both critical.

The SGS 66431 is suited for universal workpiece materials, making it applicable across steel, stainless, cast iron, aluminum, and non-ferrous alloys. The screw machine length format fits standard drill chucks on CNC machining centers, drill presses, and hand-held production drills. The straight cylindrical shank at 8.00 mm accommodates common collet and chuck setups. Coolant-through capability supports high-speed drilling where internal fluid delivery is available, improving chip evacuation and thermal management on deeper bores.

Key Features

• Micrograin solid carbide construction for hardness and wear resistance
• Ti-NAMITE-X proprietary coating extends tool life in high-heat applications
• 135-degree split point with web thinning reduces entry thrust and walking
• Coolant-through design supports internal fluid delivery for deep or high-cycle drilling
• 4-margin geometry improves hole straightness and finish quality
• DIN 6537 specification ensures dimensional consistency and interchangeability

Compatibility

Designed as a direct-fit screw machine length drill bit for standard 8.00 mm straight-shank collets and drill chucks on CNC machining centers, drill presses, and production drilling equipment. Rated for universal primary workpiece materials per Series 142P specifications.

Installation Notes

Installation and tool changes should be performed by a qualified machinist or maintenance technician with the machine at a full stop and locked out per OSHA lockout-tagout procedures. Ensure the chuck or collet bore matches the 8.00 mm straight shank before seating. Inspect the cutting edges and coating for damage before each use, as carbide is brittle and sensitive to shock loading. When using the coolant-through feature, confirm the coolant system is clean and the supply pressure is appropriate for the machine spindle before initiating the cut.