Hertel C.E03.1191 Aircraft Extension Drill Bit 15/32 in

Product Description

The HERTEL C.E03.1191 is an aircraft extension drill bit designed for reaching into tight or deep cavities that standard-length bits cannot access. Built from high-speed steel (HSS) with an oxide finish, it measures 15/32 inch (0.4688 inch) in diameter and runs 6 inches in overall length. The 135-degree split point promotes self-centering on contact, reducing the need for a center punch and minimizing walking on hard or curved surfaces. Two spiral flutes with a web-thinned, tapered web configuration clear chips efficiently during drilling. This bit is a general-purpose cutting tool typically installed by machinists, maintenance mechanics, and aerospace technicians.

This aircraft extension drill bit suits applications where extra reach is required beyond a standard jobber-length bit. The extended 6-inch overall length and 4-5/16 inch (4.3125 inch) flute length make it appropriate for drilling through structural panels, deep-set bosses, and framed assemblies in aircraft, industrial, and general fabrication work. The straight cylindrical shank fits standard drill chucks without adapters. Right-hand cutting direction is the industry standard configuration for conventional drill presses, hand drills, and CNC drilling operations.

Key Features

• 135-degree split point with self-centering geometry reduces walking and eliminates center punching on most materials
• High-speed steel construction provides heat resistance and durability across a range of metals and composites
• Web-thinned, tapered web reduces thrust and improves chip evacuation in deep-hole drilling
• Oxide finish offers light corrosion resistance and reduces friction during cutting
• Extended 6-inch overall length provides reach for confined or deep-access drilling situations
• Two spiral flutes with right-hand cut for standard drilling equipment compatibility

Compatibility

Designed as a general-purpose aircraft extension drill bit with a straight cylindrical shank compatible with standard drill chucks accepting 15/32 inch shank diameters.

Installation Notes

Installation and use of this bit should be performed by qualified machinists or maintenance technicians familiar with drilling speeds and feeds for HSS tooling. Secure the straight shank firmly in the drill chuck and verify concentricity before beginning a cut to avoid bit deflection. Apply cutting fluid appropriate to the workpiece material to extend bit life and manage heat buildup during extended drilling passes. Follow applicable shop safety standards and wear appropriate PPE including eye protection whenever operating drilling equipment.