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KEO Counterbore: For 5/16" Screw, 1/32" Oversized, 1/2 in Bore Dia - Oversized Built-in-Pilot Counterbores
KEOOversized Built-in-Pilot Counterbores

KEO Counterbore: For 5/16" Screw, 1/32" Oversized, 1/2 in Bore Dia

The KEO Counterbore is an oversized built-in-pilot counterbore designed for 5/16" screws. It features a 1/32" oversized dimension, a 1/2 in bore diameter, and a 0.343 in pilot diameter (MPN 902-000-313). This product…

SKU 3G-OTH-184321

Brand
KEO
Item
Counterbore: For 5/16" Screw, 1/32" Oversized, 1/2 in Bore Dia
Category
Oversized Built-in-Pilot Counterbores
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Technical Specifications

KEO
Manufacturer Part Number
902-000-313
Bore Dia
1/2 in
Oversized
1/32"
Pilot Dia
0.343 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 1/32" oversized dimension, a 1/2 in bore diameter, and a 0.343 in pilot diameter (MPN 902-000-313). This product is manufactured by KEO.

Frequently Asked Questions

What is the KEO Counterbore used for?

The KEO Counterbore is used to create a flat-bottomed recess for a 5/16" screw head, allowing it to sit flush with or below the workpiece surface. It is commonly applied in metalworking and machining operations where precise fastener seating is required.

What are the specifications of the KEO Counterbore 902-000-313?

The KEO Counterbore 902-000-313 is an oversized built-in-pilot type with a 1/2 in bore diameter, a 0.343 in pilot diameter, and a 1/32" oversized dimension. It is designed for 5/16" screws and manufactured by KEO.

Where to buy the KEO Counterbore 902-000-313 worldwide?

3G Electric supplies the KEO Counterbore 902-000-313 worldwide. As a global industrial equipment distributor, we handle full logistics, customs clearance, and delivery to your location. Contact us for availability and lead time.

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

Select a counterbore with a pilot diameter matching the screw's body diameter (0.343 in for 5/16" screws) and a bore diameter equal to the screw head size (1/2 in). The KEO oversized type provides extra clearance for easier assembly.

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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