We ship worldwide — Singapore, Australia, Malaysia, Indonesia, Philippines, India, Middle East & more

KEO Countersink: 60°, 4 Flute, 1 1/4 in Body Dia - Four-Flute Machine Countersinks
KEOFour-Flute Machine Countersinks

KEO Countersink: 60°, 4 Flute, 1 1/4 in Body Dia

KEO Four-Flute Machine Countersinks.

SKU 3G-OTH-185944

Also listed as: 917000278 · 917 000 278

Brand
KEO
Item
Countersink: 60°, 4 Flute, 1 1/4 in Body Dia
Category
Four-Flute Machine Countersinks
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

Delivery
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

KEO
Manufacturer Part Number
917-000-278

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

KEO Products
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 designed for deburring and countersinking holes in metal, plastic, and composite materials. Its 60-degree angle and four-flute design provide smooth, chatter-free operation, making it ideal for precision machining in aerospace, automotive, and general manufacturing applications.

What are the specifications of the KEO 917-000-278 countersink?

The KEO 917-000-278 is a 60° countersink with four flutes and a 1 1/4 in body diameter. It features a TiN-coated cobalt construction for enhanced wear resistance and heat dissipation. The manufacturer part number is 917-000-278, and it is designed for use in industrial machining operations.

Where to buy the KEO 60° countersink worldwide?

3G Electric supplies the KEO 60° countersink worldwide. As a global industrial equipment distributor, we handle full logistics, customs clearance, and delivery to your location. Contact us for availability and lead time; we source and deliver this TiN-coated cobalt countersink to meet your production needs.

How to select the right KEO countersink for my application?

Select the KEO countersink based on the required angle (60° for standard countersinking), material (TiN-coated cobalt for hard metals), and body diameter (1 1/4 in for larger holes). Match the flute count to your material—four flutes reduce vibration. Consult your machining parameters for optimal feed and speed.

Used in

Common applications for KEO
Metalworking — KEO plain-tip center drills for creating accurate starting points in lathe operations
Automotive manufacturing — KEO bell-tip center drills for countersinking holes in engine components
Aerospace machining — KEO radius-tip center drills for reducing stress risers in critical parts
General machining — KEO keyseat cutters for milling keyways in shafts and gears
Tool and die making — KEO TiN-coated center drills for extended tool life in hardened steels
Precision engineering — KEO cobalt center drills for high-temperature alloy applications

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.

You might also need

Burners & Combustion Pumps & Compressors Spare Parts All Products

Compatible alternatives & equivalents

Cross-referenced by specification & description
KEO Countersink: 60°, 4 Flute, 1 1/2 in Body Dia, 3/4 in Shank, TiN Coated Cobalt (MPN 917-000-280)
KEO
KEO Countersink: 60°, 4 Flute, 1 1/2 in Body Dia, 3/4 in Shank, TiN Coated Cobalt (MPN 917-000-280)
KEO Countersink: 60°, 4 Flute, 1 3/4 in Body Dia, 3/4 in Shank, TiN Coated Cobalt (MPN 917-000-282)
KEO
KEO Countersink: 60°, 4 Flute, 1 3/4 in Body Dia, 3/4 in Shank, TiN Coated Cobalt (MPN 917-000-282)
KEO Countersink: 60°, 4 Flute, 2 in Body Dia, 3/4 in Shank, TiN Coated Cobalt (MPN 917-000-284)
KEO
KEO Countersink: 60°, 4 Flute, 2 in Body Dia, 3/4 in Shank, TiN Coated Cobalt (MPN 917-000-284)
KEO Countersink: 90°, 4 Flute, 1 1/4 in Body Dia, TiN Coated Cobalt (MPN 917-000-294)
KEO
KEO Countersink: 90°, 4 Flute, 1 1/4 in Body Dia, TiN Coated Cobalt (MPN 917-000-294)
KEO Countersink: 82°, 4 Flute, 1 3/4 in Body Dia, 3/4 in Shank, TiN Coated Cobalt (MPN 917-000-290)
KEO
KEO Countersink: 82°, 4 Flute, 1 3/4 in Body Dia, 3/4 in Shank, TiN Coated Cobalt (MPN 917-000-290)
KEO Countersink: 90°, 4 Flute, 2 in Body Dia, 3/4 in Shank, TiN Coated Cobalt (MPN 917-000-300)
KEO
KEO Countersink: 90°, 4 Flute, 2 in Body Dia, 3/4 in Shank, TiN Coated Cobalt (MPN 917-000-300)

More from KEO

View all KEO parts
KEO Countersink: 82°, 4 Flute, 1 in Body Dia, TiN Coated Cobalt (MPN 919-000-538)
KEO
KEO Countersink: 82°, 4 Flute, 1 in Body Dia, TiN Coated Cobalt (MPN 919-000-538)
KEO Countersink: 60°, 4 Flute, 1 3/4 in Body Dia, 3/4 in Shank, TiN Coated High Speed Steel (MPN 917-000-110)
KEO
KEO Countersink: 60°, 4 Flute, 1 3/4 in Body Dia, 3/4 in Shank, TiN Coated High Speed Steel (MPN 917-000-110)
KEO Countersink: 60°, 4 Flute, 1 1/2 in Body Dia, 3/4 in Shank, AlTiN Coated Cobalt (MPN 917-000-840)
KEO
KEO Countersink: 60°, 4 Flute, 1 1/2 in Body Dia, 3/4 in Shank, AlTiN Coated Cobalt (MPN 917-000-840)
KEO Countersink: 82°, 4 Flute, 1 3/4 in Body Dia, 3/4 in Shank, AlTiN Coated Cobalt (MPN 917-000-835)
KEO
KEO Countersink: 82°, 4 Flute, 1 3/4 in Body Dia, 3/4 in Shank, AlTiN Coated Cobalt (MPN 917-000-835)
KEO Countersink: 82°, 4 Flute, 1 1/2 in Body Dia, 3/4 in Shank, TiN Coated Cobalt (MPN 917-000-288)
KEO
KEO Countersink: 82°, 4 Flute, 1 1/2 in Body Dia, 3/4 in Shank, TiN Coated Cobalt (MPN 917-000-288)
KEO Countersink: 82°, 4 Flute, 2 in Body Dia, 3/4 in Shank, AlTiN Coated High Speed Steel (MPN 917-000-909)
KEO
KEO Countersink: 82°, 4 Flute, 2 in Body Dia, 3/4 in Shank, AlTiN Coated High Speed Steel (MPN 917-000-909)
KEO Countersink: 90°, 4 Flute, 1 1/2 in Body Dia, 3/4 in Shank, AlTiN Coated Cobalt (MPN 917-000-832)
KEO
KEO Countersink: 90°, 4 Flute, 1 1/2 in Body Dia, 3/4 in Shank, AlTiN Coated Cobalt (MPN 917-000-832)
KEO Countersink: 82°, 4 Flute, 2 in Body Dia, 3/4 in Shank, TiN Coated High Speed Steel (MPN 917-000-142)
KEO
KEO Countersink: 82°, 4 Flute, 2 in Body Dia, 3/4 in Shank, TiN Coated High Speed Steel (MPN 917-000-142)