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KEO Counterbore: For 5/16" Screw, 1/64" Oversized, 31/64 in Bore Dia, 0.328 in Pilot Dia - Oversized Built-in-Pilot Counterbores
KEOOversized Built-in-Pilot Counterbores

KEO Counterbore: For 5/16" Screw, 1/64" Oversized, 31/64 in Bore Dia, 0.328 in Pilot Dia

The KEO Counterbore is an oversized built-in-pilot counterbore designed for 5/16" screws. It features a 31/64 in bore diameter and a 0.328 in pilot diameter, with a 1/64" oversized specification. This cobalt tool…

SKU 3G-OTH-184267

Brand
KEO
Item
Counterbore: For 5/16" Screw, 1/64" Oversized, 31/64 in Bore Dia, 0.328 in Pilot Dia
Category
Oversized Built-in-Pilot Counterbores
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Technical Specifications

KEO
Manufacturer Part Number
902-000-020
Type
Cobalt
Bore Dia
31/64 in
Oversized
1/64"
Pilot Dia
0.328 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 5/16" screws. It features a 31/64 in bore diameter and a 0.328 in pilot diameter, with a 1/64" oversized specification. This cobalt tool, manufactured under part number 902-000-020, is suitable for industrial machining applications.

Frequently Asked Questions

What is the KEO Counterbore used for?

The KEO Counterbore is used in industrial machining to create a flat-bottomed recess for a 5/16" screw head. Its oversized 1/64" design provides clearance for bolt holes, and the built-in pilot ensures alignment. It is suitable for metalworking applications requiring precision counterboring.

What are the specifications of the KEO Counterbore 902-000-020?

The KEO Counterbore 902-000-020 has a 31/64 in bore diameter and a 0.328 in pilot diameter. It is oversized by 1/64" for 5/16" screws. The tool is made from cobalt and is classified as an oversized built-in-pilot counterbore. The brand is KEO.

Where to buy the KEO Counterbore 902-000-020 worldwide?

You can source the KEO Counterbore 902-000-020 worldwide through 3G Electric. As a global industrial equipment distributor, 3G Electric handles full logistics, customs clearance, and delivery to your location. Contact us to order this cobalt counterbore for your machining needs.

How to select the correct KEO Counterbore for a 5/16" screw?

To select the correct KEO Counterbore for a 5/16" screw, ensure the pilot diameter matches the screw's clearance hole. For this oversized version, the pilot is 0.328 in and bore is 31/64 in. Verify the tool is cobalt for durability. KEO manufactures this specific part number 902-000-020 for industrial use.

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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