Hertel C.E05.0579 Aircraft Extension Drill Bit No.1 Hss

Product Description

The HERTEL C.E05.0579 is a No. 1 wire size aircraft extension drill bit designed for drilling in deep or hard-to-reach locations where standard-length bits cannot reach. Built from high-speed steel with an oxide finish, this bit measures 12 inches in overall length, giving technicians the reach needed in tight airframe, structural, or general fabrication setups. The 135-degree split point is self-centering and reduces walking on entry, so no center punch is required on most materials. A web-thinned, tapered web construction reduces thrust and improves chip clearance during drilling.

This bit suits aerospace, aviation maintenance, and general metalworking applications where extended reach is required. The 0.2280-inch diameter and straight cylindrical shank allow it to seat directly in standard drill chucks. Right-hand spiral fluting evacuates chips efficiently during through-hole work in sheet metal, structural aluminum, and mild steel. It meets NAS 907 standards, making it appropriate for aerospace maintenance and repair operations as well as industrial fabrication shops.

Key Features

• 135-degree split point is self-centering and eliminates walking on entry
• Web-thinned tapered web reduces drilling thrust and improves chip flow
• 12-inch overall length provides extended reach into deep or confined workpieces
• High-speed steel construction with oxide finish for general-purpose drilling durability
• Right-hand spiral flute with 2.625-inch flute length clears chips effectively
• Meets NAS 907 aerospace drill bit standard

Compatibility

Designed as a general-purpose aircraft extension drill bit conforming to NAS 907 standards, suitable for use in standard drill chucks accepting a 0.2280-inch straight cylindrical shank.

Installation Notes

Install and remove drill bits only with the drill unpowered and the chuck fully secured before operation. Ensure the shank is fully seated and the chuck is tightened properly before drilling. Use appropriate cutting fluid when drilling ferrous materials to extend tool life and maintain hole quality. Wear eye protection and follow applicable shop safety procedures when operating drilling equipment.