Iscar 3411505 Carbide Screw Machine Drill Bit 140 Deg

Product Description

The ISCAR 3411505 is a solid carbide screw machine length drill bit engineered for high-performance drilling in demanding industrial applications. It features a 140-degree split point geometry with web thinning on a tapered web for improved centering and reduced thrust. The bit is coated with AlTiCrSiN, a high-hardness physical vapor deposition coating that resists heat and wear at elevated cutting speeds. With a straight-cylindrical shank and two regular spiral flutes, this bit is designed for use in CNC machining centers, drill presses, and screw machine setups where consistent hole quality and tool life are critical. Coolant-through capability supports chip evacuation in deep-hole operations.

This drill bit is suited for production drilling in steel, stainless steel, cast iron, and other hard materials. The screw machine length format provides a shorter, more rigid cutting profile compared to jobber-length bits, making it well matched to high-feed, high-precision drilling cycles on modern CNC equipment. The SCD series designation indicates a flute-to-diameter ratio of 3xD, appropriate for moderate-depth holes in tough ferrous and hard materials where rigidity and heat management are priorities. Machinists and tooling technicians in precision manufacturing and metalworking shops are the primary users.

Key Features

• Solid carbide construction for rigidity and wear resistance in hard materials
• AlTiCrSiN coating provides high heat resistance and extended tool life at elevated cutting speeds
• 140-degree point angle with web thinning reduces entry thrust and improves self-centering
• Coolant-through design supports chip evacuation and thermal control in deep-hole drilling
• Straight-cylindrical shank for standard collet and chuck compatibility
• Screw machine length (3xD flute ratio) delivers a rigid, short cutting profile for precision CNC work

Compatibility

Designed as an OEM-style production drill bit in the ISCAR SCD series for CNC machining centers and screw machine setups drilling steel, stainless steel, cast iron, and hard materials.

Installation Notes

Installation should be performed by a qualified machinist or tooling technician. Ensure the spindle is fully stopped and the machine is powered down before changing tooling. Verify shank diameter tolerance and runout at the holder before securing; excessive runout will reduce tool life and hole accuracy. Coolant-through setups require a compatible toolholder and confirmed coolant pressure before running at rated feed and speed parameters.