Send a part number, a photo, or a whole BOM — we supply it and stand behind it. Worldwide shipping to 80+ countries.

CLE-LINE Aircraft Extension Drill: #20, 12" Overall Lg, 135° Split Point - High-Speed Steel Aircraft-Extension Drill Bits
CLE-LINEHigh-Speed Steel Aircraft-Extension Drill Bits

CLE-LINE Aircraft Extension Drill: #20, 12" Overall Lg, 135° Split Point

The CLE-LINE Aircraft Extension Drill: #20 is a high-speed steel aircraft-extension drill bit with a 12" overall length, 135° split point, and black oxide finish (MPN C23780). It features a 0.1610 diameter. 3G…

SKU 3G-OTH-195290

Also listed as: C 23780 · C-23780

Brand
CLE-LINE
Item
Aircraft Extension Drill: #20, 12" Overall Lg, 135° Split Point
Category
High-Speed Steel Aircraft-Extension Drill Bits
Available to Order
Trade pricing by quote — replies within 24h
Qty
WhatsApp an engineerMessage via Telegram
No account needed — your quote request goes straight to our engineers. A free account lets you track quotes and re-order faster.
Worldwide Shipping
Air & sea freight
Datasheet on Request
Technical specs
1-Day Quote
Replies within 24h

Local availability & support — Singapore

Local office
20 Woodlands Link #09-05, Singapore 738733
Phone
+65 8878 8355
Delivery
Same-day or next-business-day delivery within Singapore for in-stock items; 7–14 days for factory-order parts from Europe.
Payment
Invoicing in SGD. PayNow, bank transfer, and corporate PO accepted.
Ships to
Singapore

Technical Specifications

CLE-LINE
Manufacturer Part Number
C23780
Type
Black Oxide HSS
Overall Lg
12"
Split Point
135°

Technical Documents

No technical documents available for this product.
Request documentation
Not sure this is the right part? Get a recommendation.

Need installation or engineering help?

Installation, commissioning, maintenance plans, system design, and bundled product + service quotes — one team handles the full scope.
Talk to an engineer

Ask a question

CLE-LINE Products
3G Electric (S) Pte. Ltd. — Singapore

Product Description

The CLE-LINE Aircraft Extension Drill: #20 is a high-speed steel aircraft-extension drill bit with a 12" overall length, 135° split point, and black oxide finish (MPN C23780). It features a 0.1610 diameter. 3G Electric interprets your demand for specialty tooling, sources genuine CLE-LINE products, and supports your operations across 14 industrial departments — with specialist depth in combustion, pumps, and controls.

Frequently Asked Questions

What is a CLE-LINE Aircraft Extension Drill used for?

This CLE-LINE #20 aircraft extension drill is designed for deep-hole drilling in tight spaces common in aerospace and metal fabrication. Its 12" overall length and 135° split point reduce walking and cutting force, making it ideal for precision work in hard-to-reach areas.

What are the specifications of the CLE-LINE C23780 drill bit?

The CLE-LINE C23780 is a #20 high-speed steel aircraft extension drill with a 0.1610" diameter, 12" overall length, and a 135° split point. It features a black oxide finish for increased lubricity and heat resistance, suitable for drilling in steel and aluminum alloys.

Where to buy CLE-LINE aircraft extension drills worldwide?

3G Electric supplies CLE-LINE aircraft extension drills like the C23780 to customers worldwide. We handle full logistics, customs clearance, and delivery to your site. Contact us for a quote and lead time on this precision tool.

How to select the right aircraft extension drill for deep holes?

Choose a drill with a 135° split point to reduce walking and thrust, like the CLE-LINE C23780. Ensure overall length matches your access depth. For hard materials, black oxide HSS provides better chip flow and heat dissipation. Always match drill diameter to your hole tolerance.

Used in

Common applications for CLE-LINE
Structural steel fabrication — CLE-LINE cobalt annular cutters for drilling bolt holes in beams and girders
Maintenance and repair — CLE-LINE taper-shank drill bits for reaming and drilling in machine shops
Metalworking — CLE-LINE tap wrenches for manual threading of holes in steel plates
Construction — CLE-LINE HSS drill bits for drilling into mild steel and alloy steel components
Automotive repair — CLE-LINE annular cutters for cutting holes in chassis and frame members
General machining — CLE-LINE taper-shank drill bits for use on drill presses and lathes

CLE-LINE Products

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.

You might also need

Burners & Combustion Pumps & Compressors Spare Parts All Products

Compatible alternatives & equivalents

Cross-referenced by specification & description
CLE-LINE Aircraft Extension Drill: #21, 12" Overall Lg, 135° Split Point, Black Oxide HSS (MPN C23781)
CLE-LINE
CLE-LINE Aircraft Extension Drill: #21, 12" Overall Lg, 135° Split Point, Black Oxide HSS (MPN C23781)
CLE-LINE Aircraft Extension Drill: #39, 12" Overall Lg, 135° Split Point, Black Oxide HSS (MPN C23799)
CLE-LINE
CLE-LINE Aircraft Extension Drill: #39, 12" Overall Lg, 135° Split Point, Black Oxide HSS (MPN C23799)
CLE-LINE Aircraft Extension Drill: 13/64", 6" Overall Lg, 135° Split Point, Black Oxide HSS (MPN C23630)
CLE-LINE
CLE-LINE Aircraft Extension Drill: 13/64", 6" Overall Lg, 135° Split Point, Black Oxide HSS (MPN C23630)
CLE-LINE Aircraft Extension Drill: #25, 12" Overall Lg, 135° Split Point, Black Oxide HSS (MPN C23785)
CLE-LINE
CLE-LINE Aircraft Extension Drill: #25, 12" Overall Lg, 135° Split Point, Black Oxide HSS (MPN C23785)
CLE-LINE Aircraft Extension Drill: #29, 12" Overall Lg, 135° Split Point, Black Oxide HSS (MPN C23789)
CLE-LINE
CLE-LINE Aircraft Extension Drill: #29, 12" Overall Lg, 135° Split Point, Black Oxide HSS (MPN C23789)
CLE-LINE Aircraft Extension Drill: #13, 12" Overall Lg, 135° Split Point, Black Oxide HSS (MPN C23773)
CLE-LINE
CLE-LINE Aircraft Extension Drill: #13, 12" Overall Lg, 135° Split Point, Black Oxide HSS (MPN C23773)

More from CLE-LINE

View all CLE-LINE parts
CLE-LINE Aircraft Extension Drill: 11/32", 6" Overall Lg, 135° Split Point, Black Oxide HSS (MPN C23639)
CLE-LINE
CLE-LINE Aircraft Extension Drill: 11/32", 6" Overall Lg, 135° Split Point, Black Oxide HSS (MPN C23639)
CLE-LINE Aircraft Extension Drill: 7/64", 12" Overall Lg, 135° Split Point, Black Oxide HSS (MPN C23724)
CLE-LINE
CLE-LINE Aircraft Extension Drill: 7/64", 12" Overall Lg, 135° Split Point, Black Oxide HSS (MPN C23724)
CLE-LINE Aircraft Extension Drill: 21/64", 6" Overall Lg, 135° Split Point, Black Oxide HSS (MPN C23638)
CLE-LINE
CLE-LINE Aircraft Extension Drill: 21/64", 6" Overall Lg, 135° Split Point, Black Oxide HSS (MPN C23638)
CLE-LINE Aircraft Extension Drill: 27/64", 6" Overall Lg, 135° Split Point, Black Oxide HSS (MPN C23644)
CLE-LINE
CLE-LINE Aircraft Extension Drill: 27/64", 6" Overall Lg, 135° Split Point, Black Oxide HSS (MPN C23644)
CLE-LINE Aircraft Extension Drill: 9/64", 12" Overall Lg, 135° Split Point, Black Oxide HSS (MPN C23726)
CLE-LINE
CLE-LINE Aircraft Extension Drill: 9/64", 12" Overall Lg, 135° Split Point, Black Oxide HSS (MPN C23726)
CLE-LINE Aircraft Extension Drill: 1/2", 6" Overall Lg, 135° Split Point, Black Oxide HSS (MPN C23649)
CLE-LINE
CLE-LINE Aircraft Extension Drill: 1/2", 6" Overall Lg, 135° Split Point, Black Oxide HSS (MPN C23649)
CLE-LINE Aircraft Extension Drill: 17/64", 12" Overall Lg, 135° Split Point, Black Oxide HSS (MPN C23734)
CLE-LINE
CLE-LINE Aircraft Extension Drill: 17/64", 12" Overall Lg, 135° Split Point, Black Oxide HSS (MPN C23734)
CLE-LINE Aircraft Extension Drill: 25/64", 6" Overall Lg, 135° Split Point, Black Oxide HSS (MPN C23642)
CLE-LINE
CLE-LINE Aircraft Extension Drill: 25/64", 6" Overall Lg, 135° Split Point, Black Oxide HSS (MPN C23642)