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KEO Counterbore: For M3.5 Screw, 6.5 mm Bore Dia, 3.9 mm Pilot Dia - Built-in-Pilot Counterbores
KEOBuilt-in-Pilot Counterbores

KEO Counterbore: For M3.5 Screw, 6.5 mm Bore Dia, 3.9 mm Pilot Dia

The KEO Counterbore is a built-in-pilot counterbore designed for M3.5 screws, featuring a 6.5 mm bore diameter and a 3.9 mm pilot diameter, constructed from cobalt. This standard tool, manufactured by KEO under part…

SKU 3G-OTH-202265

Brand
KEO
Item
Counterbore: For M3.5 Screw, 6.5 mm Bore Dia, 3.9 mm Pilot Dia
Category
Built-in-Pilot Counterbores
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Technical Specifications

KEO
Manufacturer Part Number
902-000-048
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KEO Products
3G Electric (S) Pte. Ltd. — Singapore

Product Description

The KEO Counterbore is a built-in-pilot counterbore designed for M3.5 screws, featuring a 6.5 mm bore diameter and a 3.9 mm pilot diameter, constructed from cobalt. This standard tool, manufactured by KEO under part number 902-000-048, is used for creating recessed holes for screw heads in industrial applications.

Supplied to the Philippines — compatible with 60 Hz installations. DHL Express delivery to Manila, Quezon City, Cebu, customs and duties handled door-to-door.

Frequently Asked Questions

What is a KEO counterbore used for?

A KEO counterbore creates a flat-bottomed recess for a screw head, allowing it to sit flush with or below the workpiece surface. This M3.5 screw counterbore with a 6.5 mm bore and 3.9 mm pilot is used in machining and assembly applications across industrial departments.

What are the specifications of the KEO counterbore 902-000-048?

The KEO counterbore 902-000-048 is a standard built-in-pilot tool for M3.5 screws. It has a 6.5 mm bore diameter and a 3.9 mm pilot diameter, made from cobalt. This part is manufactured by KEO and is suitable for creating recessed holes in metal and other materials.

Where to buy KEO counterbore 902-000-048 worldwide?

3G Electric supplies the KEO counterbore 902-000-048 worldwide. As a global industrial solutions provider, we handle full logistics and customs clearance to deliver this cobalt counterbore to your facility. Contact us for availability and lead time on this standard built-in-pilot tool.

How to select the correct KEO counterbore for M3.5 screws?

To select the correct KEO counterbore for M3.5 screws, match the bore diameter to the screw head size and the pilot diameter to the screw's body. For M3.5, the KEO 902-000-048 uses a 6.5 mm bore and 3.9 mm pilot. Always verify the screw's head dimensions and material compatibility before ordering.

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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