Chicago-latrobe 44603 Jobber Drill Bit 3/64 in Hss

Product Description

The CHICAGO-LATROBE 44603 is a jobber length drill bit designed for precision drilling in ferrous and hard materials. Built from high speed steel with an oxide coating, this bit features a 135-degree split point that reduces walking and improves bite on harder surfaces. The web-thinned, tapered web design reduces thrust requirements and supports cleaner entry. At 1.75 inches overall length with a 0.375-inch flute length, the 44603 is suited for tight-clearance and general-purpose drilling tasks. It meets NAS 907 Type B standards and is rated as a heavy duty, high performance tool. HVAC, mechanical, and service technicians keep this size on hand for sheet metal, bracket, and component drilling in the field and the shop.

The 44603 is sized at 3/64 inch (0.0469 inch decimal equivalent) with a straight-cylindrical shank of matching 3/64-inch diameter and a 1-inch shank length. Its right-hand, regular spiral flute geometry handles cast iron, stainless steel, and mild steel. This bit is sold individually but requires a minimum order of 12 units, making it practical for stocking in a service van or shop bin at a consistent size that sees frequent use in trade applications.

Key Features

• 135-degree split point reduces drill walking and improves penetration on hard materials
• High speed steel construction with oxide coating for heat and wear resistance
• Web-thinned, tapered web reduces drilling thrust and extends bit life
• Right-hand spiral flute with regular helix for efficient chip evacuation
• Meets NAS 907 Type B specification for heavy duty, high performance drilling
• Straight-cylindrical shank fits standard drill chucks without modification

Compatibility

Rated for use in cast iron, stainless steel, and steel workpieces. Fits any standard drill chuck or drill press capable of holding a 3/64-inch straight-cylindrical shank. Suitable for general-purpose jobber-length drilling applications across HVAC, plumbing, and electrical service trades.

Installation Notes

A licensed or qualified technician should verify chuck compatibility and secure the shank fully before operation. Always wear appropriate eye protection and ensure workpieces are clamped or secured before drilling. Apply consistent, moderate feed pressure to avoid heat buildup, especially when drilling stainless steel. Follow applicable shop safety standards and manufacturer guidelines for drill press or handheld drill operation.