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KEO Counterbore: For 3/8" Screw, 1/32" Oversized, 39/64 in Bore Dia - Oversized Built-in-Pilot Counterbores
KEOOversized Built-in-Pilot Counterbores

KEO Counterbore: For 3/8" Screw, 1/32" Oversized, 39/64 in Bore Dia

The KEO Counterbore is an oversized built-in-pilot counterbore designed for use with a 3/8" screw. It features a 1/32" oversized design with a 39/64 in bore diameter and a 0.406 in pilot diameter, identified by…

SKU 3G-OTH-184278

Brand
KEO
Item
Counterbore: For 3/8" Screw, 1/32" Oversized, 39/64 in Bore Dia
Category
Oversized Built-in-Pilot Counterbores
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Technical Specifications

KEO
Manufacturer Part Number
902-000-310
Bore Dia
39/64 in
Oversized
1/32"
Pilot Dia
0.406 in
Counterbore Type
Oversized
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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 use with a 3/8" screw. It features a 1/32" oversized design with a 39/64 in bore diameter and a 0.406 in pilot diameter, identified by manufacturer part number 902-000-310.

Frequently Asked Questions

What is the KEO oversized counterbore used for?

The KEO oversized counterbore is used to create a flat-bottomed recess for a 3/8" screw head in metalworking applications. Its 1/32" oversized design provides clearance for screw heads that are slightly larger than standard, ensuring proper seating in precision machining and tooling operations.

What are the specifications of the KEO counterbore 902-000-310?

The KEO counterbore 902-000-310 has a 39/64 in bore diameter and a 0.406 in pilot diameter. It is an oversized built-in-pilot type designed for a 3/8" screw with a 1/32" oversize. The brand is KEO, and it is used for creating recesses in metal parts.

Where to buy KEO counterbore 902-000-310 worldwide?

You can source the KEO counterbore 902-000-310 through 3G Electric, a global industrial equipment distributor. We handle full logistics, customs clearance, and delivery to worldwide locations. Contact us for availability and lead time on this KEO tool.

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

To select the correct KEO counterbore, match the pilot diameter to the screw's body size and the bore diameter to the screw head. For a 3/8" screw, the KEO 902-000-310 uses a 0.406 in pilot and 39/64 in bore with a 1/32" oversize for clearance. Always verify the screw head dimensions 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 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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