Accupro 63310536 Carbide Jobber Drill 9/32 in Altin

Product Description

The ACCUPRO 63310536 is a solid carbide jobber-length drill bit designed for high-performance drilling in ferrous and hard materials. It features a 9/32 inch (0.2812 inch decimal) diameter with a 140-degree notched point geometry that reduces thrust and improves self-centering on entry. The AlTiN (aluminum titanium nitride) coating extends tool life in heat-intensive cuts and improves lubricity without coolant. Overall length is 3 inches with a 1.406-inch flute length, cutting right-hand with a regular spiral flute pattern. Machinists and tool-and-die professionals install this bit in CNC machining centers, drill presses, and manual mills for production drilling applications.

This drill is suited for drilling steel and stainless steel in both production and job-shop environments. The 4xD flute-to-diameter ratio and web-thinned parallel web configuration help with chip evacuation and reduced walk on hard-to-machine alloys. The straight cylindrical shank at 5/16 inch (0.3125 inch decimal) fits standard drill chucks and collet holders without modification. Coolant-through capability is not available on this tool, making it appropriate for dry or externally lubricated operations.

Key Features

• Solid carbide construction for rigidity and heat resistance in hard-material drilling
• AlTiN coating improves surface hardness and thermal barrier, extending tool life in steel and stainless steel
• 140-degree notched point reduces entry thrust and improves self-centering
• Web-thinned parallel web lowers cutting forces and aids chip flow
• Right-hand, regular spiral flute with 4xD ratio for efficient chip evacuation
• Straight cylindrical 5/16 inch shank for broad chuck and collet compatibility

Compatibility

Designed for use in standard drill chucks and collet systems accepting a 5/16 inch straight shank. Intended for drilling steel and stainless steel workpieces in CNC and manual drilling applications.

Installation Notes

Installation and use should be performed by qualified machinists or tool operators familiar with cutting tool safety practices. Secure the shank fully in the chuck or collet and verify runout before beginning a cut. When drilling stainless steel, use appropriate cutting fluid applied externally to manage heat and extend tool life. Inspect the cutting edges for wear or chipping before each use, and never exceed the recommended maximum drilling depth of 1.13 inches per pass without retracting to clear chips.