Kennametal 4151122 Drill Bit Size 19 Solid Carbide

Product Description

The KENNAMETAL 4151122 is a screw machine length (stub) drill bit designed for high-performance drilling in metalworking and precision machining applications. Built from solid carbide and coated with TiAlN (TiN at the tip) for extended tool life, it features a 140-degree standard point angle that supports accurate entry and reduced thrust. The bit measures 2.5984 inches overall length with a 0.1660 inch (Size 19 wire gauge) cutting diameter and a 0.2362 inch straight cylindrical shank. Its stub-length configuration provides added rigidity, making it well-suited for CNC screw machines, machining centers, and drill presses where deflection control is critical. Coolant-through capability supports chip evacuation and thermal management during deep cuts.

This drill bit is intended for professional machinists and toolroom technicians working in manufacturing, aerospace, automotive, and general metalworking environments. The stub-length design limits overhang and improves concentricity in short-reach drilling operations. The 2-flute regular spiral geometry handles a wide range of workpiece materials. Maximum drilling depth is 0.6693 inches (17.00 mm), making it appropriate for through-hole and shallow blind-hole applications at tight tolerances. The DIN 6537K specification ensures dimensional consistency for repeatable setups.

Key Features

• Solid carbide construction for superior hardness and wear resistance compared to HSS tooling
• TiAlN multilayer coating with TiN tip for heat resistance and extended tool life
• 140-degree standard point angle reduces thrust and improves self-centering on entry
• Coolant-through design supports chip evacuation and controls heat in demanding cuts
• Stub-length body increases rigidity and minimizes deflection in short-reach setups
• Tapered web configuration reinforces the cutting edge across the flute length

Compatibility

Designed as an OEM-style replacement or direct-fit tooling option for screw machines, CNC machining centers, and drill presses accepting a 0.2362 inch straight cylindrical shank in the Size 19 wire gauge drill class. Conforms to DIN 6537K specification.

Installation Notes

Installation and tool changes should be performed by a qualified machinist with the machine fully powered down and spindle at rest. Verify chuck or collet size matches the 0.2362 inch shank before seating the bit. Coolant-through setups require that the coolant supply line is connected and pressure-tested before initiating a drilling cycle. Avoid exceeding the maximum drilling depth of 0.6693 inches in a single pass without adequate chip clearance.