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CLE-LINE Aircraft Extension Drill: #28, 6" 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: #28, 6" Overall Lg, 135° Split Point

The CLE-LINE Aircraft Extension Drill (#28) is a high-speed steel aircraft-extension drill bit with a 0.1405" diameter, 6" overall length, 135° split point, and black oxide finish (MPN C23688). 3G Electric interprets…

SKU 3G-OTH-195275

Also listed as: C 23688 · C-23688

Brand
CLE-LINE
Item
Aircraft Extension Drill: #28, 6" Overall Lg, 135° Split Point
Category
High-Speed Steel Aircraft-Extension Drill Bits
Available to Order
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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.

Technical Specifications

CLE-LINE
Manufacturer Part Number
C23688
Type
Black Oxide HSS
Overall Lg
6"
Split Point
135°

Technical Documents

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

Product Description

The CLE-LINE Aircraft Extension Drill (#28) is a high-speed steel aircraft-extension drill bit with a 0.1405" diameter, 6" overall length, 135° split point, and black oxide finish (MPN C23688). 3G Electric interprets customer demand and delivers genuine industrial equipment across 14 departments, with specialist depth in combustion, pumps, and controls as an authorized distributor.

Frequently Asked Questions

What is the CLE-LINE Aircraft Extension Drill #28 used for?

This CLE-LINE #28 aircraft extension drill is designed for drilling in tight or hard-to-reach spaces, common in aerospace and metal fabrication. Its 6-inch overall length and 135° split point reduce walking and improve accuracy on curved surfaces. The black oxide HSS construction provides heat resistance and extended tool life.

What are the specifications of the CLE-LINE C23688 drill bit?

The CLE-LINE C23688 is a #28 high-speed steel aircraft extension drill bit with a 0.1405-inch diameter, 6-inch overall length, and a 135° split point. It features a black oxide finish for reduced friction and increased wear resistance. The manufacturer part number is C23688.

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

CLE-LINE aircraft extension drill bits are available to order 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 on the C23688 or other CLE-LINE tooling.

How to select the right CLE-LINE aircraft extension drill bit?

Select based on hole size, material, and access constraints. The #28 (0.1405-inch) bit suits small-diameter holes in aluminum or steel. The 135° split point aids self-centering on uneven surfaces. For deeper or angled drilling, the 6-inch extension length provides reach without sacrificing rigidity. Always match speed and feed to the workpiece material.

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.

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