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: #4, 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: #4, 12" Overall Lg, 135° Split Point

The CLE-LINE Aircraft Extension Drill: #4 is a high-speed steel aircraft-extension drill bit with a black oxide finish, 12" overall length, and a 135° split point. It is designed for extended-reach drilling…

SKU 3G-OTH-195310

Also listed as: C 23764 · C-23764

Brand
CLE-LINE
Item
Aircraft Extension Drill: #4, 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
C23764
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: #4 is a high-speed steel aircraft-extension drill bit with a black oxide finish, 12" overall length, and a 135° split point. It is designed for extended-reach drilling applications, with a 0.2090" diameter (attr1234097). 3G Electric interprets customer demand and delivers this genuine industrial tool across 14 departments, with specialist expertise in combustion, pumps, and controls.

Frequently Asked Questions

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

A CLE-LINE Aircraft Extension Drill is used for drilling deep holes in tight spaces common in aerospace and metal fabrication. Its 12" overall length and 135° split point reduce walking and improve cutting efficiency in hard-to-reach areas.

What are the specifications of the CLE-LINE C23764 drill bit?

The CLE-LINE C23764 is a #4 high-speed steel aircraft-extension drill bit with a 12" overall length, 135° split point, and black oxide finish. The wire gauge size corresponds to a 0.2090" diameter. It is designed for extended reach in metal drilling applications.

Where to buy CLE-LINE C23764 aircraft extension drill worldwide?

3G Electric supplies the CLE-LINE C23764 aircraft extension drill worldwide. As a global industrial solutions provider, we handle full logistics and customs clearance to deliver this HSS drill bit to your facility, regardless of location.

How to select the right aircraft extension drill bit for deep hole drilling?

Select an aircraft extension drill bit like the CLE-LINE C23764 based on hole depth, material hardness, and required diameter. The 135° split point reduces thrust and prevents walking on curved surfaces. For extended reach, ensure overall length exceeds the hole depth by at least 1 inch.

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: #4, 6" Overall Lg, 135° Split Point, Black Oxide HSS (MPN C23664)
CLE-LINE
CLE-LINE Aircraft Extension Drill: #4, 6" Overall Lg, 135° Split Point, Black Oxide HSS (MPN C23664)
CLE-LINE Aircraft Extension Drill: #5, 12" Overall Lg, 135° Split Point, Black Oxide HSS (MPN C23765)
CLE-LINE
CLE-LINE Aircraft Extension Drill: #5, 12" Overall Lg, 135° Split Point, Black Oxide HSS (MPN C23765)
CLE-LINE Aircraft Extension Drill: #35, 6" Overall Lg, 135° Split Point, Black Oxide HSS (MPN C23695)
CLE-LINE
CLE-LINE Aircraft Extension Drill: #35, 6" Overall Lg, 135° Split Point, Black Oxide HSS (MPN C23695)
CLE-LINE Aircraft Extension Drill: #12, 12" Overall Lg, 135° Split Point, Black Oxide HSS (MPN C23772)
CLE-LINE
CLE-LINE Aircraft Extension Drill: #12, 12" Overall Lg, 135° Split Point, Black Oxide HSS (MPN C23772)
CLE-LINE Aircraft Extension Drill: #34, 6" Overall Lg, 135° Split Point, Black Oxide HSS (MPN C23694)
CLE-LINE
CLE-LINE Aircraft Extension Drill: #34, 6" Overall Lg, 135° Split Point, Black Oxide HSS (MPN C23694)
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)

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)