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CLE-LINE 7/16" High-Speed Steel Extended-Length Drill Bit - High-Speed Steel Extended-Length Drill Bits
CLE-LINEHigh-Speed Steel Extended-Length Drill Bits

CLE-LINE 7/16" High-Speed Steel Extended-Length Drill Bit

The CLE-LINE Extra Long Drill Bit (7/16", 18" overall length) is a high-speed steel extended-length drill bit with a black oxide finish and a 118° notched point. It is designed for deep-hole drilling applications…

SKU 3G-OTH-207417

Also listed as: C 20493 · C-20493

Brand
CLE-LINE
Item
7/16" High-Speed Steel Extended-Length Drill Bit
Part Number
C20493
Category
High-Speed Steel Extended-Length Drill Bits
Available to Order
Also known as:C20493CLE-LINE
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Local office
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Phone
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Technical Specifications

CLE-LINE
Manufacturer Part Number
C20493
Type
Black Oxide HSS
Overall Lg
18"
Notched Point
118°

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

Product Description

The CLE-LINE Extra Long Drill Bit (7/16", 18" overall length) is a high-speed steel extended-length drill bit with a black oxide finish and a 118° notched point. It is designed for deep-hole drilling applications where standard-length bits cannot reach.

Frequently Asked Questions

What is a CLE-LINE Extra Long Drill Bit used for?

This CLE-LINE 7/16" extra long drill bit is designed for deep-hole drilling in metal, wood, and plastics where standard-length bits cannot reach. Its 18" overall length and 118° notched point provide efficient chip evacuation and reduced walking on curved surfaces, making it ideal for maintenance, fabrication, and production environments.

What are the specifications of the CLE-LINE C20493 drill bit?

The CLE-LINE C20493 is a 7/16" (0.4375") diameter high-speed steel extra long drill bit with an 18" overall length. It features a black oxide finish for corrosion resistance and a 118° notched point for self-centering. The bit is made from HSS for durability in ferrous and non-ferrous materials.

Where to buy CLE-LINE extra long drill bits worldwide?

3G Electric supplies CLE-LINE extra long drill bits like the C20493 to customers worldwide. As a global industrial solutions provider, we handle full logistics, customs clearance, and delivery to your facility. Contact us for pricing and lead time on this and other CLE-LINE tooling.

How to select the right extra long drill bit for deep hole drilling?

Choose a bit with sufficient overall length to reach the hole depth, typically 3-4x the hole depth. For steel, use HSS with a 118° point; for harder alloys, consider cobalt or carbide. The CLE-LINE C20493's black oxide finish reduces friction, and its notched point helps prevent walking on entry.

Used in

Common applications for CLE-LINE
General maintenance and repair — CLE-LINE Black & Gold HSS jobber-length drill bits (e.g., C18092) for drilling steel, aluminum, and plastics.
Structural steel fabrication — CLE-LINE Silver & Deming drill bits (e.g., C27602) for large-diameter holes in plate and beams.
Stainless steel and hard alloy drilling — CLE-LINE cobalt jobber-length drill bits (e.g., C23323) with 135° split point for heat resistance.
Portable magnetic drilling — CLE-LINE cobalt annular cutters (e.g., C34147) with pilot pin for holemaking in steel plate.
Metric equipment assembly — CLE-LINE metric jobber-length drill bits (e.g., C74017) for matching metric fasteners and components.
Heavy equipment maintenance — CLE-LINE 3-flats shank drill bits for secure chucking in portable drills under high torque.
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CLE-LINE Products

3G Electric supplies CLE-LINE high-speed steel extended-length 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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