Kennametal 4151105 Size 30 Carbide Drill Bit 140 Deg

Product Description

The KENNAMETAL 4151105 is a solid carbide screw machine length drill bit designed for precision drilling in demanding production environments. It carries a Size 30 wire gauge designation, equivalent to 0.1285 inches in diameter, with a 140-degree point angle for aggressive, accurate entry into ferrous and non-ferrous materials. The bit features a multilayer TiAlN coating at the tip to extend tool life under high-heat cutting conditions. With an overall length of 2.4409 inches and a stub flute configuration, this drill is built for rigidity and minimal deflection. Licensed machinists, tool-and-die technicians, and CNC operators are the primary installers and users of this tool.

This drill bit is suited for short-depth hole applications in production machining, screw machine operations, and CNC drilling centers. The stub length design limits overhang and maximizes stiffness, making it well-suited for high-cycle operations where hole location accuracy is critical. With coolant-through capability, it supports through-spindle coolant delivery to flush chips and manage heat at the cutting zone. Maximum drilling depth is 0.5512 inches (14.00 mm), making it appropriate for shallow through-holes and blind holes in tight tolerances.

Key Features

• Solid carbide construction for rigidity and long tool life in hard or abrasive materials
• TiAlN tip coating reduces thermal wear and extends cutting edge life
• 140-degree point angle promotes self-centering entry and reduces thrust force
• Coolant-through design compatible with through-spindle coolant delivery systems
• Straight cylindrical shank at 0.2362 inches diameter fits standard collet and drill chuck toolholders
• Tapered web configuration improves chip evacuation and cutting efficiency

Compatibility

Designed as an OEM-style replacement or direct-use screw machine drill bit for CNC machining centers, manual drill presses, and screw machines requiring a Size 30 wire gauge carbide drill with a straight shank. Conforms to DIN 6537K specification.

Installation Notes

Installation and use should be performed by qualified machinists or tooling technicians familiar with CNC or manual drilling equipment. Ensure spindle power is off and the machine is in a safe lockout state before changing tooling. Seat the straight shank fully into the collet or drill chuck and verify runout before beginning a cutting cycle. Do not exceed the rated maximum drilling depth of 0.5512 inches per pass without retracting to clear chips.