CHICAGO-LATROBE Aircraft Extension Drill: #4, 6" Overall Lg, 135° Split Point

The CHICAGO-LATROBE Aircraft Extension Drill #4 is designed for drilling in tight, hard-to-reach spaces on aircraft assemblies and other precision metalwork. Its extended length and 135° split point reduce walking and improve hole accuracy in high-strength alloys, making it essential for aerospace maintenance and manufacturing.

The CHICAGO-LATROBE Aircraft Extension Drill #4 (MPN 11034) has a 0.2090-inch diameter, 6-inch overall length, 135° split point, and black oxide HSS finish. It conforms to NAS 907 Type B, ensuring compliance with aerospace fastener-hole standards for high-strength alloy drilling.

3G Electric supplies the CHICAGO-LATROBE Aircraft Extension Drill #4 worldwide. As a global industrial equipment distributor, we handle full logistics, customs clearance, and delivery to your location. Contact us for availability and lead time; we source and deliver this NAS-spec drill bit to any country.

Select the CHICAGO-LATROBE aircraft extension drill bit based on hole diameter, material hardness, and reach required. For the #4 size, use a 0.2090-inch diameter with a 135° split point for self-centering in steel alloys. Always match the drill to NAS 907 Type B specs for aerospace applications to ensure proper fit and performance.