CLE-LINE Aircraft Extension Drill: #21, 12" Overall Lg, 135° Split Point
The CLE-LINE Aircraft Extension Drill (#21, MPN C23781) is a high-speed steel aircraft-extension drill bit with a black oxide finish, 12" overall length, and a 135° split point. Its 0.1590-inch diameter is designed…
SKU 3G-OTH-195237
Also listed as: C 23781 · C-23781
Local availability & support
- Delivery
- Worldwide DHL shipping from Singapore; 7–14 business days door-to-door for most destinations.
- Payment
- Invoicing in USD. Bank transfer (SWIFT) and corporate PO accepted.
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Product Description
The CLE-LINE Aircraft Extension Drill (#21, MPN C23781) is a high-speed steel aircraft-extension drill bit with a black oxide finish, 12" overall length, and a 135° split point. Its 0.1590-inch diameter is designed for extended-reach drilling applications. 3G Electric interprets customer demand and delivers this genuine industrial tool across 14 departments — with specialist depth in combustion, pumps and controls — ensuring you get the right answer, not just a catalog.
Frequently Asked Questions
What is a CLE-LINE aircraft extension drill used for?
A CLE-LINE aircraft extension drill is used for drilling in tight or hard-to-reach spaces common in aerospace and metal fabrication. Its extended 12-inch overall length and 135° split point reduce walking and improve accuracy on curved or angled surfaces, making it ideal for aircraft maintenance and sheet metal work.
What are the specifications of the CLE-LINE C23781 drill bit?
The CLE-LINE C23781 is a #21 high-speed steel aircraft extension drill bit with a 0.1590-inch diameter, 12-inch overall length, and a 135° split point. It features a black oxide finish for increased lubricity and heat resistance, designed for drilling in steel, aluminum, and other metals common in aerospace applications.
Where to buy CLE-LINE aircraft extension drills worldwide?
You can source CLE-LINE aircraft extension drills 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 the C23781 or other CLE-LINE drill bits.
How to select the right CLE-LINE aircraft extension drill bit?
To select the right CLE-LINE aircraft extension drill bit, match the wire gauge or fractional size to your hole diameter and material thickness. For hard metals, choose a 135° split point like the C23781 to reduce thrust and prevent walking. Ensure the overall length provides adequate reach for your application without excessive flex.
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3G Electric supplies CLE-LINE high-speed steel aircraft-extension drill bits. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.
