Value Collection 0572755 4.4mm Carbide Stub Drill Bit

Product Description

The VALUE COLLECTION 0572755 is a screw machine length (stub) drill bit ground from solid carbide stock. Its shortened flute and body length provide increased rigidity compared to jobber-length bits, reducing deflection and chatter when drilling in metal, cast iron, hardened alloys, and other demanding materials. The two-flute, right-hand-cut design pairs with a 135-degree split point for fast, self-centering penetration without a center punch. The bright, uncoated finish leaves the carbide surface at its natural hardness. This bit is sized at 4.4mm and is a standard tool for machinists, maintenance technicians, and production shops running drill presses, CNC machining centers, or manual mills.

Screw machine length drill bits are common in metal fabrication, automotive, aerospace, and general machining applications where hole-location accuracy and bit stability matter more than reach. The stub format is well-suited to rigid setups in drill chucks or collets where workpiece access is not restricted. The 4.4mm diameter is frequently used for clearance holes, tap-drill operations, and close-tolerance bore starts in ferrous and non-ferrous metals.

Key Features

• Solid carbide construction for hardness and heat resistance in demanding materials
• 135-degree split point reduces thrust force and self-centers without spot drilling
• Screw machine (stub) length increases rigidity and reduces bit deflection
• Two-flute regular spiral geometry for efficient chip evacuation
• Right-hand cutting direction for standard drill press and CNC spindle rotation
• Bright, uncoated finish — no added coating to affect dimensional tolerance

Compatibility

Designed as an OEM-style replacement or direct substitute for screw machine length stub drill bits in standard straight-shank drill chucks and collets sized for 4.4mm shanks, suitable for drill presses, CNC machining centers, and manual milling machines.

Installation Notes

A licensed machinist or qualified technician should secure the bit fully in a properly sized drill chuck or collet before operation, verifying runout before cutting. Power down and de-energize the machine spindle completely before changing bits. Solid carbide is brittle compared to high-speed steel — avoid side loading, interrupted cuts without proper feed rates, or dropping the bit on hard surfaces. Follow applicable OSHA machine guarding and PPE requirements when operating drilling equipment.