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KEO Built-in-Pilot Counterbore for M3.5 Screw, 6.5 mm Bore, 3.9 mm Pilot, Cobalt - Built-in-Pilot Counterbores
KEOBuilt-in-Pilot Counterbores

KEO Built-in-Pilot Counterbore for M3.5 Screw, 6.5 mm Bore, 3.9 mm Pilot, Cobalt

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

Also listed as: 902000048 · 902 000 048

Brand
KEO
Item
Built-in-Pilot Counterbore for M3.5 Screw, 6.5 mm Bore, 3.9 mm Pilot, Cobalt
Part Number
902-000-048
Category
Built-in-Pilot Counterbores
Available to Order
Also known as:902-000-048KEO
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Technical Specifications

KEO
Manufacturer Part Number
902-000-048

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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.

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
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 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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