Hertel C.E05.1049 Aircraft Drill Bit Letter Z Hss 12in

Product Description

The HERTEL C.E05.1049 is a Letter Z aircraft extension drill bit designed for deep-reach drilling applications in aerospace and industrial environments. Built from high-speed steel with an oxide finish, this bit measures 12 inches in overall length with a 3.875-inch spiral flute. The 135-degree split point is self-centering and web-thinned, reducing the thrust required to start a hole and improving chip evacuation. Right-hand cutting direction and a straight cylindrical shank make it compatible with standard drill chucks. Licensed HVAC techs, machinists, and aerospace maintenance professionals install this type of tooling on production lines and in confined-access repair scenarios.

This aircraft extension drill bit is suited for drilling through metal in applications where standard-length bits cannot reach. The extended 12-inch body allows access into structural assemblies, fuselage panels, and deep cavities where clearance is limited. The general-purpose tool performance rating and NAS 907 standard compliance make it appropriate for both production drilling and maintenance, repair, and overhaul operations. The 0.4130-inch decimal diameter corresponds to Letter Z sizing, placing it in a range commonly used for clearance and tapping pilot holes in heavier-gauge metal stock.

Key Features

• Letter Z diameter (0.4130 inches) with self-centering 135-degree split point
• Web-thinned, tapered web configuration reduces drilling thrust and improves chip flow
• High-speed steel construction with oxide finish for heat and wear resistance
• 12-inch overall length provides extended reach into deep or confined assemblies
• Spiral flute, right-hand cutting, 2-flute design for efficient chip evacuation
• Meets NAS 907 standard for aircraft-quality tooling

Compatibility

Designed as an OEM-style aircraft extension drill bit for use with standard straight-shank drill chucks in metalworking, aerospace maintenance, and general industrial drilling applications.

Installation Notes

This bit is installed by machinists and aerospace maintenance technicians using compatible drill presses, hand drills, or pneumatic drilling equipment with a chuck sized for a 0.4130-inch straight cylindrical shank. Secure the workpiece firmly before drilling and apply appropriate cutting fluid when working with hard or thick metal stock. Inspect the bit for wear or damage before each use, and never apply lateral force to an extended-length drill bit, as this increases the risk of breakage.