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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: For #4 Screw is an oversized built-in-pilot counterbore designed for precision machining. This tool features a 7/32 in bore diameter and a 0.143 in pilot diameter, with a 1/32" oversized…

SKU 3G-OTH-184233

Also listed as: 902000078 · 902 000 078

Brand
KEO
Item
Oversized Built-in-Pilot Counterbore
Part Number
902-000-078
Category
Oversized Built-in-Pilot Counterbores
Available to Order
Also known as:902-000-078KEO
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Local availability & support — Singapore

Local office
20 Woodlands Link #09-05, Singapore 738733
Phone
+65 8878 8355
Payment
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Technical Specifications

KEO
Manufacturer Part Number
902-000-078
Bore Dia
7/32 in
Pilot Dia
0.143 in

Technical Documents

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

Product Description

The KEO Counterbore: For #4 Screw is an oversized built-in-pilot counterbore designed for precision machining. This tool features a 7/32 in bore diameter and a 0.143 in pilot diameter, with a 1/32" oversized specification. It is identified by manufacturer part number 902-000-078.

Frequently Asked Questions

What is the KEO oversized counterbore used for?

The KEO oversized counterbore is used in precision machining to create a flat-bottomed recess for a #4 screw head. Its 1/32" oversized design provides clearance for screw heads that are slightly larger than standard, ensuring proper seating in metal or plastic workpieces.

What are the specifications of the KEO counterbore 902-000-078?

The KEO counterbore 902-000-078 is an oversized built-in-pilot type for #4 screws. It has a 7/32 in bore diameter and a 0.143 in pilot diameter, with a 1/32" oversized specification. The brand is KEO and the manufacturer part number is 902-000-078.

Where to buy the KEO counterbore 902-000-078 worldwide?

3G Electric supplies the KEO counterbore 902-000-078 worldwide. As a global industrial equipment distributor, we handle full logistics, customs clearance, and delivery to your location. Contact us to source this precision tool for your machining operations.

How to select the correct KEO counterbore for a #4 screw?

Select a KEO counterbore that matches your screw size and desired fit. For a #4 screw, the oversized 902-000-078 provides extra clearance with a 7/32 in bore and 0.143 in pilot. Always verify pilot diameter matches your existing hole to ensure proper alignment during machining.

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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