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KEO Counterbore: For M4 Screw, 8 mm Bore Dia, 3.3 mm Pilot Dia - Built-in-Pilot Counterbores
KEOBuilt-in-Pilot Counterbores

KEO Counterbore: For M4 Screw, 8 mm Bore Dia, 3.3 mm Pilot Dia

The KEO Counterbore: For M4 Screw is a built-in-pilot counterbore from KEO, designed for M4 screws. It features an 8 mm bore diameter, a 3.3 mm pilot diameter, and a TiN coated cobalt construction, with a standard…

SKU 3G-OTH-202306

Brand
KEO
Item
Counterbore: For M4 Screw, 8 mm Bore Dia, 3.3 mm Pilot Dia
Category
Built-in-Pilot Counterbores
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Technical Specifications

KEO
Manufacturer Part Number
902-000-216
Type
TiN Coated Cobalt
Bore Dia
8 mm
Pilot Dia
3.3 mm
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Technical Documents

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KEO Products
3G Electric (S) Pte. Ltd. — Singapore

Product Description

The KEO Counterbore: For M4 Screw is a built-in-pilot counterbore from KEO, designed for M4 screws. It features an 8 mm bore diameter, a 3.3 mm pilot diameter, and a TiN coated cobalt construction, with a standard configuration (MPN 902-000-216).

Frequently Asked Questions

What is the KEO Counterbore for M4 screw used for?

The KEO Counterbore for M4 screw is used to create a flat-bottomed recess for the head of an M4 screw, allowing it to sit flush with the workpiece surface. It is commonly applied in metalworking and machining operations where precise fastener seating is required, such as in jig and fixture assembly.

What are the specifications of the KEO Counterbore 902-000-216?

The KEO Counterbore 902-000-216 is designed for M4 screws with an 8 mm bore diameter and a 3.3 mm pilot diameter. It features a TiN coated cobalt construction for enhanced wear resistance and is built with a standard configuration. The manufacturer part number is 902-000-216.

Where to buy the KEO Counterbore 902-000-216 worldwide?

You can source the KEO Counterbore 902-000-216 worldwide through 3G Electric, a global industrial equipment distributor. We handle full logistics, customs clearance, and delivery to your location. Contact us for availability and lead time; we provide reliable sourcing for this KEO tool.

How to select the correct KEO counterbore for M4 screws?

To select the correct KEO counterbore for M4 screws, match the pilot diameter to the screw's clearance hole size (3.3 mm for M4) and ensure the bore diameter (8 mm) accommodates the screw head. Verify the coating (TiN) suits your material. Always consult the manufacturer's specifications for proper fit and application.

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 built-in-pilot counterbores. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.

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