Kennametal 4149371 Solid Carbide Jobber Drill 21/32 in

Product Description

The KENNAMETAL 4149371 is a solid carbide jobber-length drill designed for high-performance metal cutting in demanding production environments. It features a 21/32 inch (0.6563 inch) diameter with a 140-degree point angle and a multilayer TiAlN coating that extends tool life by reducing heat buildup and wear at the cutting edge. The overall length is 5.63 inches (143 mm) with a flute length of 3.66 inches (93 mm). Coolant-through capability supports chip evacuation and thermal management during deep-hole drilling cycles. This drill is installed and operated by machinists and tool-and-die professionals in CNC and manual drilling applications.

The 4149371 is suited for drilling steel, stainless steel, cast iron, aluminum, and other non-ferrous materials in both production-floor and job-shop settings. Its 5xD flute-to-diameter ratio and regular spiral flute geometry make it a practical choice for through-hole and blind-hole operations where consistent hole quality and dimensional accuracy are required. The straight cylindrical shank seats directly in standard drill chucks and collet holders without adapters. DIN 6537K specification compliance supports use in applications where tooling standardization is required.

Key Features

• Solid carbide construction for rigidity and wear resistance in hard and abrasive workpiece materials
• Multilayer TiAlN coating reduces thermal load and extends cutting life compared to uncoated carbide
• 140-degree point angle minimizes walking and reduces thrust force on entry
• Coolant-through design delivers cutting fluid directly to the cutting zone for deep-hole applications
• Right-hand cut, regular spiral flute geometry for efficient chip evacuation
• DIN 6537K specification compliance for standardized tooling setups

Compatibility

Designed as a high-performance OEM-style jobber drill compatible with primary workpiece materials including steel, stainless steel, cast iron, aluminum, and non-ferrous alloys. Fits standard drill chucks and collet systems accepting a straight cylindrical shank with a 0.1406 inch (18 mm) shank diameter.

Installation Notes

This drill is installed by machinists in CNC machining centers, drill presses, and manual lathes equipped with appropriate chuck or collet tooling. Verify that the machine spindle and workholding are rated for the cutting forces associated with carbide tooling in hard materials before use. Confirm coolant-through passages are clear and coolant supply is active before beginning deep-hole drilling cycles. Do not use this drill to ream or side-load; it is designed strictly for axial drilling operations.