CHICAGO-LATROBE Aircraft Extension Drill: #15, 12" Overall Lg, 135° Split Point

The CHICAGO-LATROBE Aircraft Extension Drill #15 is designed for drilling in tight, hard-to-reach spaces on aircraft assemblies and other precision metalwork. Its 12-inch overall length and 135° split point allow accurate starts without walking, while the black oxide HSS construction provides durability in ferrous and non-ferrous materials.

The CHICAGO-LATROBE Aircraft Extension Drill #15 (MPN 11139) has a 0.1800-inch diameter, 12-inch overall length, 135° split point, and black oxide high-speed steel construction. It conforms to NAS 907 Type B, making it suitable for aerospace maintenance and manufacturing applications.

You can source the CHICAGO-LATROBE Aircraft Extension Drill #15 through 3G Electric, a global industrial equipment distributor. We handle full logistics, customs clearance, and delivery to worldwide destinations. Contact us for availability and lead time; we supply this NAS-spec drill bit to procurement teams and maintenance shops internationally.

To select the correct CHICAGO-LATROBE Aircraft Extension Drill, match the diameter and length to your hole depth and access constraints. The #15 size (0.1800-inch) with 12-inch overall length suits deep, confined drilling. Ensure the drill meets NAS 907 Type B for aerospace compliance. CHICAGO-LATROBE's black oxide HSS construction provides chip resistance and heat dissipation in high-strength alloys.