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KEO Oversized Built-in-Pilot Counterbore - Oversized Built-in-Pilot Counterbores
KEOOversized Built-in-Pilot Counterbores

KEO Oversized Built-in-Pilot Counterbore

The KEO Counterbore is an oversized built-in-pilot counterbore designed for 1/2" screws. It features a 1/64" oversized bore diameter of 49/64 inches and a pilot diameter of 0.515 inches, constructed from cobalt. This…

SKU 3G-OTH-184287

Also listed as: 902000029 · 902 000 029

Brand
KEO
Item
Oversized Built-in-Pilot Counterbore
Part Number
902-000-029
Category
Oversized Built-in-Pilot Counterbores
Available to Order
Also known as:902-000-029KEO
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Technical Specifications

KEO
Manufacturer Part Number
902-000-029
Type
Cobalt
Bore Dia
49/64 in
Pilot Dia
0.515 in

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

Product Description

The KEO Counterbore is an oversized built-in-pilot counterbore designed for 1/2" screws. It features a 1/64" oversized bore diameter of 49/64 inches and a pilot diameter of 0.515 inches, constructed from cobalt. This product is identified by manufacturer part number 902-000-029.

Frequently Asked Questions

What is the KEO oversized counterbore used for?

The KEO oversized counterbore is used to create a flat-bottomed recess for 1/2" screw heads in metalworking applications. Its built-in pilot aligns with an existing hole, and the 1/64" oversized bore provides clearance for screw head seating. 3G Electric supplies this cobalt tool for machining, aerospace, and industrial maintenance.

What are the specifications of the KEO counterbore 902-000-029?

This KEO counterbore has a 49/64 in bore diameter, 0.515 in pilot diameter, and is 1/64" oversized for 1/2" screws. It is made from cobalt and is identified by MPN 902-000-029. The oversized built-in-pilot design ensures precise alignment and clean counterboring in steel and alloys.

Where to buy KEO counterbore tools worldwide?

3G Electric supplies the KEO counterbore 902-000-029 to customers worldwide. We handle full logistics, customs clearance, and delivery to your facility. As a global industrial solutions provider, we source genuine KEO cutting tools and support procurement teams with technical guidance on tool selection and application.

How to select the correct KEO counterbore for a screw size?

Select a KEO counterbore where the pilot diameter matches your pre-drilled hole and the bore diameter matches the screw head plus clearance. For a 1/2" screw, this 49/64 in bore with 0.515 in pilot is designed for a 1/64" oversize fit. Always verify the screw head diameter and material hardness 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 oversized 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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This oversized built-in-pilot counterbore is made from cobalt and features a 1 13/64 in bore diameter with a 0.781 in pilot diameter. The 1/32" oversized design provides clearance for fasteners in metalworking applications, creating a flat-bottomed recess for screw heads to ensure proper seating and flush assembly
KEO
This oversized built-in-pilot counterbore is made from cobalt and features a 1 13/64 in bore diameter with a 0.781 in pilot diameter. The 1/32" oversized design provides clearance for fasteners in metalworking applications, creating a flat-bottomed recess for screw heads to ensure proper seating and flush assembly

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