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KEO 60° Four-Flute Machine Countersink, 5/8 in Body Dia, Cobalt Steel - Four-Flute Machine Countersinks
KEOFour-Flute Machine Countersinks

KEO 60° Four-Flute Machine Countersink, 5/8 in Body Dia, Cobalt Steel

KEO Four-Flute Machine Countersinks.

SKU 3G-OTH-185899

Also listed as: 919000521 · 919 000 521

Brand
KEO
Item
60° Four-Flute Machine Countersink, 5/8 in Body Dia, Cobalt Steel
Part Number
919-000-521
Category
Four-Flute Machine Countersinks
Available to Order
Also known as:919-000-521KEO
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Local availability & support — Singapore

Local office
20 Woodlands Link #09-05, Singapore 738733
Phone
+65 8878 8355
Payment
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Technical Specifications

KEO
Manufacturer Part Number
919-000-521

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3G Electric (S) Pte. Ltd. — Singapore

Product Description

KEO Four-Flute Machine Countersinks.

Frequently Asked Questions

What is the KEO 60° countersink used for?

The KEO 60° countersink is used for deburring and countersinking holes in metal workpieces. Its 4-flute design provides smooth cutting action, making it suitable for machining operations in industrial manufacturing, automotive, and aerospace applications where precise 60° chamfers are required.

What are the specifications of the KEO 919-000-521 countersink?

The KEO 919-000-521 is a 60° four-flute machine countersink with a 5/8 in body diameter, made from cobalt steel. It is designed for use in drill presses and milling machines to create clean, accurate chamfers. The cobalt material offers heat resistance for extended tool life in ferrous materials.

Where to buy KEO countersinks worldwide?

3G Electric supplies KEO countersinks worldwide, handling full logistics and customs clearance for international orders. As a global industrial equipment distributor since 1990, we source and deliver the KEO 919-000-521 and other cutting tools to your facility. Contact us for availability and lead time.

How to select the right KEO countersink for your application?

Select a KEO countersink based on the required chamfer angle (e.g., 60°), body diameter matching your hole size, and material compatibility. For hard metals, choose cobalt or HSS variants. Ensure the shank fits your tool holder. 3G Electric can help match the correct KEO part number to your machining needs.

Used in

Common applications for KEO
General machining — KEO single-flute countersinks for deburring and chamfering holes in steel and aluminum.
Automotive repair — KEO 82° countersinks for creating seats for flathead screws in engine and chassis components.
Aerospace manufacturing — KEO TiAlN-coated carbide countersinks for precision chamfering of fastener holes in hard alloys.
MRO operations — KEO left-hand keyseat cutters for milling keyways in shafts during equipment repair.
Metal fabrication — KEO 90° countersinks for chamfering plate and structural steel before welding.
Machine shop — KEO 100° countersinks for deburring cross-drilled holes in hydraulic manifolds.
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KEO Products

3G Electric supplies KEO four-flute machine countersinks. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.

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