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CLE-LINE Extra Long Drill Bit: 7/16", 18" Overall Lg, 118° Notched Point - High-Speed Steel Extended-Length Drill Bits
CLE-LINEHigh-Speed Steel Extended-Length Drill Bits

CLE-LINE Extra Long Drill Bit: 7/16", 18" Overall Lg, 118° Notched Point

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
Extra Long Drill Bit: 7/16", 18" Overall Lg, 118° Notched Point
Category
High-Speed Steel Extended-Length Drill Bits
Available to Order
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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
C20493
Type
Black Oxide HSS
Overall Lg
18"
Notched Point
118°

Technical Documents

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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
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 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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Compatible alternatives & equivalents

Cross-referenced by specification & description
CLE-LINE Reduced Shank Drill Bit: 18.5 mm, 118° Point, Black Oxide HSS (MPN C21081)
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CLE-LINE Reduced Shank Drill Bit: 18.5 mm, 118° Point, Black Oxide HSS (MPN C21081)
CLE-LINE Reduced Shank Drill Bit: 17.5 mm, 118° Point, Black Oxide HSS (MPN C21079)
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CLE-LINE Reduced Shank Drill Bit: 18 mm, 118° Point, Black Oxide HSS (MPN C21080)
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CLE-LINE Reduced Shank Drill Bit: 16 mm, 118° Point, Black Oxide HSS (MPN C21076)
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CLE-LINE Reduced Shank Drill Bit: 16 mm, 118° Point, Black Oxide HSS (MPN C21076)

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