CLEVELAND Aircraft Extension Drill: #29, 12" Overall Lg, 135° Split Point
The CLEVELAND Aircraft Extension Drill: #29 is an NAS-Spec Cobalt Aircraft-Extension Drill Bit (SKU 439D54, MPN C08171) with a 0.1360-inch diameter, 12-inch overall length, 135° split point, and a straw/bronze cobalt…
SKU 3G-OTH-198862
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Product Description
The CLEVELAND Aircraft Extension Drill: #29 is an NAS-Spec Cobalt Aircraft-Extension Drill Bit (SKU 439D54, MPN C08171) with a 0.1360-inch diameter, 12-inch overall length, 135° split point, and a straw/bronze cobalt finish. It conforms to NAS 907 Type J specifications.
Frequently Asked Questions
What is the CLEVELAND Aircraft Extension Drill #29 used for?
The CLEVELAND Aircraft Extension Drill #29 is used for drilling precision holes in aerospace-grade materials. Its 12-inch overall length and 135 ° split point allow access to tight spaces, while the straw/bronze cobalt finish provides heat resistance and durability for demanding aircraft assembly and maintenance applications.
What are the specifications of the CLEVELAND C08171 drill bit?
The CLEVELAND C08171 is a #29 aircraft extension drill bit with a 0.1360-inch diameter, 12-inch overall length, 135° split point, and straw/bronze cobalt finish. It conforms to NAS 907 Type J specifications and is made from cobalt steel for enhanced performance in hard materials.
Where to buy CLEVELAND C08171 drill bits worldwide?
CLEVELAND C08171 drill bits are available to order worldwide through 3G Electric, a global industrial equipment distributor. We handle full logistics, customs clearance, and delivery to your location. Contact us for availability and lead time on this NAS-spec cobalt aircraft extension drill.
How to select the right CLEVELAND aircraft extension drill bit?
Select the CLEVELAND aircraft extension drill bit based on hole size, material, and reach requirements. The #29 size (0.1360-inch) suits small-diameter holes in aerospace alloys. Ensure the drill conforms to NAS 907 Type J for specification compliance. The 135° split point reduces walking and improves cutting efficiency.
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3G Electric supplies CLEVELAND nas-spec cobalt aircraft-extension drill bits. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.










