Accupro 4500316 Screw Machine Drill Bit 7.50 Mm Carbide

Product Description

The ACCUPRO 4500316 is a screw machine length drill bit engineered for high-performance drilling in demanding materials. Built from solid carbide and coated with TiAlN, it handles stainless steels and other hard-to-machine workpieces where standard high-speed steel bits fall short. The 7.50 mm diameter and 140-degree web-thinned point geometry reduce entry force and improve chip evacuation. At 79.00 mm overall length with a 41.00 mm flute length, this stub-length format provides rigidity and reduces deflection in short-hole and production drilling applications. The coolant-through design supports high-feed strategies in CNC machining centers and drill presses.

This drill bit is suited for metalworking shops, maintenance facilities, and production environments where stainless steel and similarly tough alloys are drilled regularly. The screw machine length format makes it a go-to choice for CNC machining centers, turret lathes, and drill presses where tool overhang must be minimized. The straight cylindrical shank seats directly in standard collet chucks and drill chucks without adapters.

Key Features

• Solid carbide construction for rigidity and wear resistance in hard materials
• TiAlN coating extends tool life at elevated cutting temperatures common in stainless steel drilling
• 140-degree web-thinned point reduces thrust force and improves centering accuracy
• Coolant-through design supports high-pressure coolant delivery directly to the cutting edge
• Screw machine length format minimizes deflection and improves hole accuracy
• Right-hand cut, regular spiral flute for reliable chip clearance

Compatibility

Designed for use in CNC machining centers, drill presses, and turret lathes with standard collet or drill chuck tooling. Primary workpiece material is stainless steels. Part of the ACCUPRO ASSC140-TA-CL series covering the 6.50 to 8.00 mm diameter range per DIN specification.

Installation Notes

Installation and tool changes should be performed with the machine powered down and locked out per standard OSHA and shop safety procedures. Seat the straight shank fully and evenly in the chuck or collet before tightening to prevent runout. A licensed machinist or tooling technician should verify speed and feed parameters for the specific workpiece material before engaging the cut. Inspect the cutting edge for chipping or wear before each use, as carbide tools can fail suddenly if run beyond their service life.