Kennametal 4121532 Screw Machine Drill Bit 5.90mm Carbide

Product Description

The KENNAMETAL 4121532 is a screw machine length drill bit designed for high-performance drilling in demanding materials. Built from solid carbide with a TiN tip coating, it delivers the hardness and heat resistance required for cutting stainless steel, cast iron, and high-temperature alloys. The 140-degree point angle improves centering and reduces thrust on entry. At 2.5984 inches overall length with a 5.90 mm diameter, this is a stub-length bit suited for rigid setups and short-reach applications. Coolant-through capability supports heat management during extended production runs. Licensed HVAC, machine, and tooling technicians will find this bit appropriate for precision drilling in tight tolerances.

This bit is used in CNC machining centers, drill presses, and screw machines where short overall length and rigidity are required. The 2-flute regular spiral design handles chip evacuation in ferrous and exotic alloy materials. Primary target materials include stainless steel, cast iron, and high-temperature alloys - common in HVAC component manufacturing, mechanical contracting, and industrial maintenance environments. The straight cylindrical shank and 6.00 mm shank diameter make it compatible with standard drill chucks and collet systems.

Key Features

• Solid carbide construction for durability in hard and abrasive materials
• TiN tip coating reduces wear and extends tool life in stainless steel and cast iron
• 140-degree point angle for improved self-centering and reduced entry thrust
• Coolant-through design supports high-speed production drilling
• Screw machine length provides rigidity and minimizes deflection in short-reach setups
• Tapered web configuration maintains core strength along flute length

Compatibility

Designed for use in applications involving stainless steel, cast iron, and high-temperature alloys. Conforms to DIN 6537K specification and DIN 6535 and DIN 6537 standards. Fits standard straight-shank drill chucks and collet holders accepting a 6.00 mm shank diameter.

Installation Notes

Installation and use of this drill bit should be performed by qualified machinists or tooling technicians familiar with carbide tooling. Ensure the machine spindle is fully stopped and locked out before changing tooling. Carbide bits are brittle - avoid lateral loading, impact, or prying during use. Coolant-through setups should be verified for adequate flow before beginning production drilling.