Kennametal 4148807 Screw Machine Carbide Drill Bit

Product Description

The KENNAMETAL 4148807 is a screw machine length drill bit engineered for high-performance hole-making in demanding machining environments. Built from solid carbide and featuring a TiN coating at the tip, this bit delivers extended tool life and consistent cutting performance. The 140-degree drill point angle suits a wide range of work materials, while the coolant-through design channels cutting fluid directly to the cutting edge for effective chip evacuation and heat management. HVAC fabricators, maintenance machinists, and industrial tradespeople working with metal enclosures, brackets, and mechanical assemblies will find this bit well-suited for production drilling applications.

This drill bit belongs to the B051A series and is designed for screw machine length applications, making it ideal for compact, rigid setups on drill presses, CNC machining centers, and turret lathes. The straight shank provides broad compatibility with standard chuck configurations. With a 3XD depth-to-diameter ratio and coolant-through capability, it is suited for short-to-medium depth holes where precision and repeatability are critical. Two right-hand spiral flutes promote smooth chip flow and reduce cutting load during operation.

Key Features

• Solid carbide construction for rigidity and wear resistance in metal drilling applications
• TiN coating at the tip extends cutting edge life and reduces friction
• 140-degree standard point angle for accurate entry and reduced thrust force
• Coolant-through design delivers fluid directly to the cutting zone for heat and chip control
• Right-hand, regular spiral flute geometry promotes consistent chip evacuation
• Straight shank fits standard drill chucks and collet holders without additional tooling

Compatibility

Designed as an OEM-style replacement and production drill bit for use in standard straight-shank chuck systems on CNC machining centers, drill presses, and turret lathes accepting screw machine length carbide drill bits.

Installation Notes

Installation should be performed by a qualified machinist or toolroom technician. Ensure the machine spindle is fully stopped and locked out before inserting or removing the bit from the chuck or collet. Verify chuck runout is within acceptable tolerance before beginning a drilling cycle, as excessive runout accelerates carbide tool wear. Confirm coolant-through supply is active and at adequate pressure before initiating cuts when using the through-coolant feature.