Kennametal 4151655 Drill Bit Size 36 Solid Carbide 140 Deg

Product Description

The KENNAMETAL 4151655 is a screw machine length (stub) drill bit engineered for precision drilling in metalworking and machining applications. Built from solid carbide and coated with TiAlN (tip), this bit delivers hardness and heat resistance suited to high-speed drilling in ferrous and non-ferrous materials. It carries a wire gauge size of 36, equivalent to 0.1065 inches in decimal, and features a 140-degree standard point angle for aggressive, self-centering entry. The two-flute, regular spiral design promotes efficient chip evacuation during drilling cycles. Overall length is 2.2835 inches, with a straight cylindrical shank measuring 0.1575 inches in diameter. Licensed machinists and tool-and-die technicians are the primary installers of this type of bit.

This bit is suited to CNC machining centers, drill presses, and screw machine setups where tight-tolerance, small-diameter hole generation is required. The stub flute length of 0.6693 inches keeps the bit rigid, reducing deflection in short-depth applications. Maximum drilling depth is 0.4724 inches, making it appropriate for shallow, precision holes in production environments. The tapered web configuration adds strength at the tip and supports consistent performance across repeated operations. The DIN 6537K specification designation confirms dimensional conformance to recognized standards.

Key Features

• Solid carbide construction for hardness and wear resistance in demanding machining operations
• TiAlN tip coating provides thermal protection and extended tool life at elevated cutting speeds
• 140-degree standard point angle for self-centering entry and reduced thrust force
• Stub (screw machine) length design minimizes deflection and improves hole accuracy in short-depth drilling
• Tapered web configuration adds tip strength for repeatable, high-cycle performance
• Conforms to DIN 6537K specification for dimensional consistency

Compatibility

Designed as an OEM-style screw machine length drill bit for use in standard straight-shank drill chucks and collets accepting a 0.1575-inch shank diameter, in CNC machining centers, turret lathes, and bench drill presses requiring wire gauge size 36 tooling.

Installation Notes

Installation of this drill bit should be performed by a qualified machinist or tooling technician. Secure the straight cylindrical shank fully in a properly sized collet or drill chuck before operation, and verify runout is within acceptable tolerance for the application. Power down and de-energize the machine spindle completely before changing tooling. Do not exceed the manufacturer-recommended feed and speed parameters for carbide tooling in the material being drilled, as carbide is brittle and susceptible to fracture from excessive side-loading or interrupted cuts.