Hertel C.E03.0958 Aircraft Drill Bit Letter V Hss

Product Description

The HERTEL C.E03.0958 is a Letter V aircraft extension drill bit designed for drilling in tight or deep-access applications where a standard-length bit cannot reach. Built from high-speed steel with an oxide finish, it features a 135-degree split point that is self-centering and reduces walking on entry, eliminating the need for a center punch in most setups. The two-flute spiral design with a web-thinned, tapered web configuration improves chip evacuation and reduces feed pressure. At 6 inches overall length with a 3.625-inch flute length and a 0.3770-inch decimal diameter, this bit is sized for general-purpose metal drilling in aerospace and fabrication environments.

Aircraft extension drill bits are used wherever extended reach is required to bore through structural assemblies, frames, or stacked materials. This bit is suited for aerospace maintenance, sheet metal fabrication, and structural drilling tasks where standard jobber-length bits fall short. The straight cylindrical shank fits standard drill chucks without adapters. Right-hand cutting direction is standard for conventional drill press and handheld drill use. It conforms to NAS 907, making it appropriate for aerospace-grade applications requiring dimensional and performance standards compliance.

Key Features

• Letter V size at 0.3770 inches decimal diameter for precise hole sizing
• 135-degree split point is self-centering and reduces drill walking on entry
• Web-thinned tapered web reduces thrust and improves penetration in harder materials
• 6-inch overall length with 3.625-inch flute length for extended-reach drilling
• High-speed steel construction with oxide finish for general-purpose metal drilling
• Meets NAS 907 standard for aerospace drilling applications

Compatibility

Designed as a general-purpose aircraft extension drill bit compatible with standard straight-shank drill chucks. Conforms to NAS 907 dimensional standards for aerospace drilling applications.

Installation Notes

Installation is performed by licensed aircraft maintenance technicians, machinists, or qualified fabricators. Secure the straight cylindrical shank firmly in a drill chuck before use and verify chuck runout is within acceptable tolerance to maintain hole accuracy. Always wear appropriate eye protection and secure the workpiece to prevent movement during drilling. Follow applicable industry and shop safety procedures when drilling into structural or aerospace-grade materials.