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KEO Counterbore: For 7/8" Screw, 1 3/8 in Bore Dia, 0.891 in Pilot Dia - Built-in-Pilot Counterbores
KEOBuilt-in-Pilot Counterbores

KEO Counterbore: For 7/8" Screw, 1 3/8 in Bore Dia, 0.891 in Pilot Dia

The KEO Built-in-Pilot Counterbore is a standard-type tool designed for 7/8" screws, featuring a 1 3/8 in bore diameter and a 0.891 in pilot diameter. This TiN coated cobalt counterbore, manufactured by KEO under…

SKU 3G-OTH-202302

Also listed as: 902000177 · 902 000 177

Brand
KEO
Item
Counterbore: For 7/8" Screw, 1 3/8 in Bore Dia, 0.891 in Pilot Dia
Category
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
902-000-177
Type
TiN Coated Cobalt
Bore Dia
1 3/8 in
Pilot Dia
0.891 in

Technical Documents

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

Product Description

The KEO Built-in-Pilot Counterbore is a standard-type tool designed for 7/8" screws, featuring a 1 3/8 in bore diameter and a 0.891 in pilot diameter. This TiN coated cobalt counterbore, manufactured by KEO under part number 902-000-177, is engineered for precision counterboring operations.

Frequently Asked Questions

What is the KEO Counterbore 902-000-177 used for?

The KEO Counterbore 902-000-177 is used to create a flat-bottomed recess for a 7/8" screw head, allowing it to sit flush with or below the workpiece surface. It is commonly applied in metalworking and machining operations where precision counterboring is required, such as in jig and fixture building.

What are the specifications of the KEO Counterbore 902-000-177?

The KEO Counterbore 902-000-177 has a 1 3/8 in bore diameter and a 0.891 in pilot diameter. It is a standard-type, built-in-pilot counterbore made from TiN coated cobalt. The manufacturer part number is 902-000-177, and it is designed for 7/8" screws.

Where to buy the KEO Counterbore 902-000-177 worldwide?

You can source the KEO Counterbore 902-000-177 worldwide through 3G Electric, a global industrial equipment distributor. We handle full logistics, customs clearance, and delivery to your location. Contact us for availability and lead time on this KEO tool.

How to select the correct KEO counterbore for a 7/8" screw?

To select the correct KEO counterbore for a 7/8" screw, match the pilot diameter to the existing hole size and ensure the bore diameter accommodates the screw head. For the 902-000-177, the pilot is 0.891 in and the bore is 1 3/8 in. Always verify the screw head dimensions and material compatibility 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 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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