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

KEO Countersink: 90°, 1 Flute, 1 1/4 in Body Dia, 3/4 in Shank - Fast-Cutting Single-Flute Countersinks
KEOFast-Cutting Single-Flute Countersinks

KEO Countersink: 90°, 1 Flute, 1 1/4 in Body Dia, 3/4 in Shank

The KEO Countersink: 90° is a fast-cutting single-flute countersink, type TiN Coated Carbide, with a 1 1/4 in body diameter and 3/4 in shank. This KEO tool is designed for efficient deburring and countersinking…

SKU 3G-OTH-185458

Also listed as: 919002978 · 919 002 978

Brand
KEO
Item
Countersink: 90°, 1 Flute, 1 1/4 in Body Dia, 3/4 in Shank
Category
Fast-Cutting Single-Flute 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
919-002-978
Type
TiN Coated Carbide
Flute
1
Shank
3/4 in
Body Dia
1 1/4 in

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

The KEO Countersink: 90° is a fast-cutting single-flute countersink, type TiN Coated Carbide, with a 1 1/4 in body diameter and 3/4 in shank. This KEO tool is designed for efficient deburring and countersinking operations.

Frequently Asked Questions

What is the KEO 1-flute countersink used for?

The KEO 90° single-flute countersink is designed for deburring and countersinking holes in metal, plastic, and composite materials. Its TiN-coated carbide construction provides wear resistance for high-speed machining. Common applications include aerospace, automotive, and general fabrication where precise 90° chamfers are required.

What are the specifications of the KEO countersink 919-002-978?

This KEO countersink has a 90° included angle, 1 flute, 1 1/4 in body diameter, and 3/4 in shank. It is made from TiN-coated carbide for extended tool life. The manufacturer part number is 919-002-978. It is designed for fast cutting in CNC and manual milling operations.

Where to buy KEO countersinks worldwide?

3G Electric supplies KEO countersinks worldwide. As a global industrial distributor, we handle full logistics, customs clearance, and delivery to your facility. Contact our team for pricing and lead time on the KEO 919-002-978 or other single-flute countersink sizes. We source and deliver to any country.

How to select the right KEO countersink for my application?

Select a KEO countersink based on hole size and material. The 90° angle is standard for flat-head screws. For harder materials like stainless steel, choose TiN-coated carbide for heat resistance. Match the shank diameter (3/4 in) to your tool holder. Single-flute designs provide fast chip evacuation for production work.

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 fast-cutting single-flute 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: 90°, 1 Flute, 5/8 in Body Dia, TiN Coated Carbide (MPN 919-002-976)
KEO
KEO Countersink: 90°, 1 Flute, 5/8 in Body Dia, TiN Coated Carbide (MPN 919-002-976)
KEO Countersink: 90°, 1 Flute, 1/4 in Body Dia, TiN Coated Carbide (MPN 919-002-973)
KEO
KEO Countersink: 90°, 1 Flute, 1/4 in Body Dia, TiN Coated Carbide (MPN 919-002-973)
KEO Countersink: 90°, 1 Flute, 3/8 in Body Dia, TiN Coated Carbide (MPN 919-002-974)
KEO
KEO Countersink: 90°, 1 Flute, 3/8 in Body Dia, TiN Coated Carbide (MPN 919-002-974)
KEO Countersink: 90°, 1 Flute, 3/4 in Body Dia, TiN Coated Carbide (MPN 919-002-977)
KEO
KEO Countersink: 90°, 1 Flute, 3/4 in Body Dia, TiN Coated Carbide (MPN 919-002-977)
KEO Countersink: 90°, 1 Flute, 3/16 in Body Dia, 3/16 in Shank, TiN Coated Carbide (MPN 919-002-972)
KEO
KEO Countersink: 90°, 1 Flute, 3/16 in Body Dia, 3/16 in Shank, TiN Coated Carbide (MPN 919-002-972)
KEO Countersink: 90°, 1 Flute, 1/2 in Body Dia, TiN Coated Carbide (MPN 919-002-975)
KEO
KEO Countersink: 90°, 1 Flute, 1/2 in Body Dia, TiN Coated Carbide (MPN 919-002-975)

More from KEO

View all KEO parts
KEO Countersink: 120°, 1 Flute, 5/8 in Body Dia, Cobalt (MPN 919-000-679)
KEO
KEO Countersink: 120°, 1 Flute, 5/8 in Body Dia, Cobalt (MPN 919-000-679)
KEO Countersink: 100°, 1 Flute, 3/16 in Body Dia, 3/16 in Shank, Cobalt (MPN 919-000-623)
KEO
KEO Countersink: 100°, 1 Flute, 3/16 in Body Dia, 3/16 in Shank, Cobalt (MPN 919-000-623)
KEO Countersink: 82°, 1 Flute, 3/16 in Body Dia, 3/16 in Shank, TiN Coated Carbide (MPN 919-002-964)
KEO
KEO Countersink: 82°, 1 Flute, 3/16 in Body Dia, 3/16 in Shank, TiN Coated Carbide (MPN 919-002-964)
KEO Countersink: 90°, 1 Flute, 1 1/2 in Body Dia, 3/4 in Shank, AlTiN Coated High Speed Steel (MPN 919-002-872)
KEO
KEO Countersink: 90°, 1 Flute, 1 1/2 in Body Dia, 3/4 in Shank, AlTiN Coated High Speed Steel (MPN 919-002-872)
KEO Countersink: 82°, 1 Flute, 1/2 in Body Dia, AlTiN Coated High Speed Steel (MPN 919-002-904)
KEO
KEO Countersink: 82°, 1 Flute, 1/2 in Body Dia, AlTiN Coated High Speed Steel (MPN 919-002-904)
KEO Countersink: 82°, 1 Flute, 5/8 in Body Dia, AlTiN Coated Carbide (MPN 919-002-324)
KEO
KEO Countersink: 82°, 1 Flute, 5/8 in Body Dia, AlTiN Coated Carbide (MPN 919-002-324)
KEO Countersink: 82°, 1 Flute, 3/4 in Body Dia, AlTiN Coated Carbide (MPN 919-002-326)
KEO
KEO Countersink: 82°, 1 Flute, 3/4 in Body Dia, AlTiN Coated Carbide (MPN 919-002-326)
KEO Countersink: 110°, 1 Flute, 1 3/4 in Body Dia, 3/4 in Shank, High Speed Steel (MPN 53441)
KEO
KEO Countersink: 110°, 1 Flute, 1 3/4 in Body Dia, 3/4 in Shank, High Speed Steel (MPN 53441)