Kennametal 4150317 Screw Machine Drill Bit 12.50mm Carbide

Product Description

The KENNAMETAL 4150317 is a screw machine length (stub) drill bit engineered for high-performance drilling in metal and other hard materials. Built from solid carbide and coated with a multilayer TiAlN finish at the tip, this bit delivers extended tool life and resistance to heat buildup under demanding conditions. It features a 140-degree point angle for aggressive, self-centering entry, a 12.50 mm cutting diameter, and a straight-cylindrical shank with a 14.00 mm shank diameter. The right-hand spiral flute design promotes efficient chip evacuation. Machinists and tool-and-die professionals install this bit in CNC machining centers, drill presses, and screw machines where stub-length rigidity and tight diameter tolerances are required.

This drill bit is suited for stub-length drilling applications where overhang must be minimized to reduce deflection and improve hole accuracy. The Series B041A-CPG geometry is optimized for short, precise holes in ferrous and non-ferrous workpiece materials. With a maximum drilling depth of 43.00 mm (1.6929 inches) and a 3xD flute-to-diameter ratio, it is well matched to production drilling environments where repeatability and tight tolerances are critical. The DIN 6537K specification governs its geometry and dimensional standards, making it a direct fit for applications requiring certified tooling dimensions.

Key Features

• Solid carbide construction for rigidity and long tool life in demanding materials
• Multilayer TiAlN coating at the tip reduces heat buildup and extends cutting edge life
• 140-degree standard point angle for fast, self-centering entry without a pilot hole
• Straight-cylindrical shank at 14.00 mm diameter for secure chuck grip
• Right-hand regular spiral flute promotes reliable chip evacuation
• Conforms to DIN 6537K specification for consistent geometry and dimensional accuracy

Compatibility

Designed as a stub-length solid carbide drill bit conforming to DIN 6537K, fitting standard straight-shank drill chucks and collet holders that accept a 14.00 mm shank diameter in CNC and manual drilling equipment.

Installation Notes

Installation should be performed by a qualified machinist familiar with carbide tooling. Ensure the spindle and workpiece are fully secured before engaging the drill. Carbide tooling is brittle and should never be used in setups that allow lateral loading or interrupted cuts unless the specific application is rated for such use. Confirm that the chuck or collet holder is clean, undamaged, and rated for the shank diameter before tightening.