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KEO Counterbore: For 3/8" Screw, 1/64" Oversized, 19/32 in Bore Dia, 0.39 in Pilot Dia - Oversized Built-in-Pilot Counterbores
KEOOversized Built-in-Pilot Counterbores

KEO Counterbore: For 3/8" Screw, 1/64" Oversized, 19/32 in Bore Dia, 0.39 in Pilot Dia

The KEO Counterbore is an oversized built-in-pilot counterbore designed for 3/8" screws. It features a 1/64" oversized bore diameter of 19/32 inches and a pilot diameter of 0.39 inches, constructed from cobalt. This…

SKU 3G-OTH-184274

Also listed as: 902000023 · 902 000 023

Brand
KEO
Item
Counterbore: For 3/8" Screw, 1/64" Oversized, 19/32 in Bore Dia, 0.39 in Pilot Dia
Category
Oversized Built-in-Pilot Counterbores
Available to Order
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Local availability & support — Singapore

Local office
20 Woodlands Link #09-05, Singapore 738733
Phone
+65 8878 8355
Delivery
Same-day or next-business-day delivery within Singapore for in-stock items; 7–14 days for factory-order parts from Europe.
Payment
Invoicing in SGD. PayNow, bank transfer, and corporate PO accepted.
Ships to
Singapore

Technical Specifications

KEO
Manufacturer Part Number
902-000-023
Type
Cobalt
Bore Dia
19/32 in
Oversized
1/64"
Pilot Dia
0.39 in
Counterbore Type
Oversized

Technical Documents

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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 3/8" screws. It features a 1/64" oversized bore diameter of 19/32 inches and a pilot diameter of 0.39 inches, constructed from cobalt. This tool is identified by manufacturer part number 902-000-023.

Frequently Asked Questions

What is a KEO oversized counterbore used for?

A KEO oversized counterbore creates a flat-bottomed recess for a 3/8" screw head, with a 1/64" oversized bore to provide clearance. It is used in machining operations where a precise, recessed fit is required, typically in metalworking and industrial manufacturing applications.

What are the specifications of the KEO counterbore 902-000-023?

The KEO counterbore 902-000-023 is an oversized built-in-pilot type for 3/8" screws. It has a 19/32 in bore diameter, 0.39 in pilot diameter, and is 1/64" oversized. The tool is made from cobalt and carries manufacturer part number 902-000-023.

Where to buy a KEO counterbore for 3/8" screws worldwide?

3G Electric supplies the KEO counterbore 902-000-023 for worldwide delivery. As a global industrial solutions provider, we handle full logistics and customs clearance to deliver this cobalt oversized counterbore to your facility, regardless of location.

How to select the correct oversized counterbore for a 3/8" screw?

Select an oversized counterbore like the KEO 902-000-023 by matching the screw size (3/8") and ensuring the bore diameter (19/32 in) provides the desired 1/64" clearance. Verify the pilot diameter (0.39 in) fits your pilot hole, and choose cobalt for heat resistance in harder materials.

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 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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Compatible alternatives & equivalents

Cross-referenced by specification & description
KEO Counterbore: For 3/8" Screw, 1/32" Oversized, 39/64 in Bore Dia, 0.406 in Pilot Dia, Cobalt (MPN 902-000-024)
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KEO Counterbore: For 3/8" Screw, 1/32" Oversized, 39/64 in Bore Dia, 0.406 in Pilot Dia, Cobalt (MPN 902-000-024)
KEO Counterbore: For 5/16" Screw, 1/32" Oversized, 1/2 in Bore Dia, 0.343 in Pilot Dia, Cobalt (MPN 902-000-021)
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KEO Counterbore: For 5/16" Screw, 1/32" Oversized, 1/2 in Bore Dia, 0.343 in Pilot Dia, Cobalt (MPN 902-000-021)
KEO Counterbore: For 5/8" Screw, 1/64" Oversized, 31/32 in Bore Dia, 0.641 in Pilot Dia, Cobalt (MPN 902-000-032)
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KEO Counterbore: For 5/8" Screw, 1/64" Oversized, 31/32 in Bore Dia, 0.641 in Pilot Dia, Cobalt (MPN 902-000-032)
KEO Counterbore: For 5/8" Screw, 1/32" Oversized, 63/64 in Bore Dia, 0.656 in Pilot Dia, Cobalt (MPN 902-000-033)
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KEO Counterbore: For 5/8" Screw, 1/32" Oversized, 63/64 in Bore Dia, 0.656 in Pilot Dia, Cobalt (MPN 902-000-033)
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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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 Counterbore: For 7/16" Screw, 1/32" Oversized, 11/16 in Bore Dia, 0.468 in Pilot Dia, Cobalt (MPN 902-000-027)
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KEO Counterbore: For 7/16" Screw, 1/32" Oversized, 11/16 in Bore Dia, 0.468 in Pilot Dia, Cobalt (MPN 902-000-027)

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