Kennametal 1913487 Screw Machine Drill Bit 8mm Carbide

Product Description

The KENNAMETAL 1913487 is a screw machine length drill bit designed for high-performance drilling in ferrous materials. Built from solid carbide and coated with a multilayer TiAlN finish, this bit delivers heat resistance and extended tool life in demanding production environments. It features an 8.00 mm diameter, a 140-degree split point for accurate positioning, and a right-hand cutting direction. The overall length is 79.00 mm (3.11 inches), and the flute length measures 41.00 mm. Maximum drilling depth is 29.00 mm (1.14 inches). This is a Series B966 tool conforming to DIN 6537K specifications, suited for machinists and toolroom professionals running CNC or manual screw machine operations.

This drill bit is engineered for use on cast iron and steel workpieces in production drilling applications. The screw machine length format — shorter than jobber length — provides added rigidity and reduced deflection in turret lathes, screw machines, and CNC machining centers. The straight cylindrical shank accommodates standard drill chucks and collet holders at 8.00 mm (0.3150 inches) shank diameter. Web-thinned geometry reduces thrust force and improves chip evacuation. It is appropriate for shops running tight-tolerance holes in steel components or cast iron housings where consistent diameter control is critical.

Key Features

• Solid carbide construction for rigidity and wear resistance in ferrous materials
• Multilayer TiAlN coating for elevated-temperature performance and extended tool life
• 140-degree point angle with web-thinned geometry reduces entry thrust and improves centering
• Screw machine length provides greater stiffness compared to jobber-length drills
• Conforms to DIN 6537K specification for dimensional consistency
• Diameter tolerance of +0.006 to +0.021 mm supports controlled-fit hole applications

Compatibility

Designed as an OEM-style production drill for use in standard 8.00 mm straight-shank drill chucks and collet systems; primary workpiece materials listed are cast iron and steel per manufacturer specification.

Installation Notes

Installation and use should be performed by qualified machinists or toolroom technicians familiar with cutting tool setup. Ensure spindle and workholding are fully secured before starting the cut. Do not exceed the manufacturer-rated maximum drilling depth of 29.00 mm per pass without retracting to clear chips. Coolant-through is not supported on this tool; use external coolant or cutting fluid appropriate to the workpiece material when required.