We ship to the Philippines — door-to-door, customs and logistics handled by 3G Electric

KEO Counterbore: For #4 Screw, 1/32" Oversized, 7/32 in Bore Dia - Oversized Built-in-Pilot Counterbores
KEOOversized Built-in-Pilot Counterbores

KEO Counterbore: For #4 Screw, 1/32" Oversized, 7/32 in Bore Dia

The KEO Counterbore is an oversized built-in-pilot counterbore designed for #4 screws. It features a 1/32" oversized bore with a 7/32 in bore diameter and a 0.143 in pilot diameter (MPN 902-000-331). This tool is…

SKU 3G-OTH-184329

Also listed as: 902000331 · 902 000 331

Brand
KEO
Item
Counterbore: For #4 Screw, 1/32" Oversized, 7/32 in Bore Dia
Category
Oversized Built-in-Pilot Counterbores
Available to Order
Trade pricing by quote — replies within 24h
Qty
WhatsApp an engineerMessage via Telegram
No account needed — your quote request goes straight to our engineers. A free account lets you track quotes and re-order faster.
Worldwide Shipping
Air & sea freight
Datasheet on Request
Technical specs
1-Day Quote
Replies within 24h

Local availability & support — the Philippines

Delivery
5–8 business days door-to-door; Bureau of Customs clearance typically 2–4 business days.
Payment
Invoicing in PHP or USD. Bank transfer and corporate PO accepted.
Ships to
Manila, Quezon City, Cebu, Davao, Batangas

Technical Specifications

KEO
Manufacturer Part Number
902-000-331
Bore Dia
7/32 in
Oversized
1/32"
Pilot Dia
0.143 in
Counterbore Type
Oversized

Technical Documents

No technical documents available for this product.
Request documentation
Not sure this is the right part? Get a recommendation.

Need installation or engineering help?

Installation, commissioning, maintenance plans, system design, and bundled product + service quotes — one team handles the full scope.
Talk to an engineer

Ask a question

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

Product Description

The KEO Counterbore is an oversized built-in-pilot counterbore designed for #4 screws. It features a 1/32" oversized bore with a 7/32 in bore diameter and a 0.143 in pilot diameter (MPN 902-000-331). This tool is manufactured by KEO.

Supplied to the Philippines — compatible with 60 Hz installations. DHL Express delivery to Manila, Quezon City, Cebu, customs and duties handled door-to-door.

Frequently Asked Questions

What is the KEO oversized counterbore used for?

The KEO oversized counterbore is used to create a flat-bottomed recess for #4 screw heads in metal or plastic workpieces. The 1/32" oversized bore provides clearance for screw heads that are slightly larger than standard, ensuring proper seating in industrial machining and assembly applications.

What are the specifications of the KEO counterbore 902-000-331?

The KEO counterbore 902-000-331 is an oversized built-in-pilot type for #4 screws. It has a 7/32 in bore diameter, a 0.143 in pilot diameter, and is 1/32" oversized. The tool is manufactured by KEO and is designed for precision counterboring in metalworking.

Where to buy the KEO counterbore 902-000-331 worldwide?

3G Electric supplies the KEO counterbore 902-000-331 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 on this KEO tool.

How to select the correct KEO counterbore for a #4 screw?

Select a KEO counterbore with a pilot diameter matching the screw's body diameter (0.143 in for #4) and a bore diameter that accommodates the screw head. The 1/32" oversized version provides extra clearance for slightly oversized heads. 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.

You might also need

Burners & Combustion Pumps & Compressors Spare Parts All Products

Compatible alternatives & equivalents

Cross-referenced by specification & description
KEO Counterbore: For #4 Screw, 1/64" Oversized, 13/64 in Bore Dia, 0.127 in Pilot Dia (MPN 902-000-332)
KEO
KEO Counterbore: For #4 Screw, 1/64" Oversized, 13/64 in Bore Dia, 0.127 in Pilot Dia (MPN 902-000-332)
KEO Center Drill: Plain Type, #4 1/2, 60°, 5 in Overall Lg, Cobalt (MPN 907-000-132)
KEO
KEO Center Drill: Plain Type, #4 1/2, 60°, 5 in Overall Lg, Cobalt (MPN 907-000-132)
KEO Center Drill: Plain Type, #4 1/2, 60°, 6 in Overall Lg, Cobalt (MPN 907-000-137)
KEO
KEO Center Drill: Plain Type, #4 1/2, 60°, 6 in Overall Lg, Cobalt (MPN 907-000-137)
KEO Center Drill: Plain Type, #4/0, 82°, 1 1/2 in Overall Lg, TiN Coated Carbide (MPN 906-001-580)
KEO
KEO Center Drill: Plain Type, #4/0, 82°, 1 1/2 in Overall Lg, TiN Coated Carbide (MPN 906-001-580)
KEO Center Drill: Plain Type, #4 1/2, 60°, 4 in Overall Lg, Cobalt (MPN 907-000-127)
KEO
KEO Center Drill: Plain Type, #4 1/2, 60°, 4 in Overall Lg, Cobalt (MPN 907-000-127)
KEO Center Drill: Plain Type, #4, 60°, 4 in Overall Lg, Cobalt (MPN 907-000-111)
KEO
KEO Center Drill: Plain Type, #4, 60°, 4 in Overall Lg, Cobalt (MPN 907-000-111)

More from KEO

View all KEO parts
KEO Counterbore: For 7/8" Screw, 1/32" Oversized, 1 25/64 in Bore Dia, 0.906 in Pilot Dia (MPN 902-000-180)
KEO
KEO Counterbore: For 7/8" Screw, 1/32" Oversized, 1 25/64 in Bore Dia, 0.906 in Pilot Dia (MPN 902-000-180)
KEO Counterbore: For 3/4" Screw, 1/32" Oversized, 1 13/64 in Bore Dia, 0.781 in Pilot Dia (MPN 902-000-299)
KEO
KEO Counterbore: For 3/4" Screw, 1/32" Oversized, 1 13/64 in Bore Dia, 0.781 in Pilot Dia (MPN 902-000-299)
KEO Counterbore: For #6 Screw, 1/64" Oversized, 1/4 in Bore Dia, 0.153 in Pilot Dia (MPN 902-000-326)
KEO
KEO Counterbore: For #6 Screw, 1/64" Oversized, 1/4 in Bore Dia, 0.153 in Pilot Dia (MPN 902-000-326)
KEO Counterbore: For 1" Screw, 1/32" Oversized, 1 19/32 in Bore Dia, 1.032 in Pilot Dia (MPN 902-000-186)
KEO
KEO Counterbore: For 1" Screw, 1/32" Oversized, 1 19/32 in Bore Dia, 1.032 in Pilot Dia (MPN 902-000-186)
KEO Counterbore: For #6 Screw, 1/64" Oversized, 1/4 in Bore Dia, 0.153 in Pilot Dia (MPN 902-000-093)
KEO
KEO Counterbore: For #6 Screw, 1/64" Oversized, 1/4 in Bore Dia, 0.153 in Pilot Dia (MPN 902-000-093)
KEO Counterbore: For 7/16" Screw, 1/64" Oversized, 43/64 in Bore Dia, 0.452 in Pilot Dia (MPN 902-000-308)
KEO
KEO Counterbore: For 7/16" Screw, 1/64" Oversized, 43/64 in Bore Dia, 0.452 in Pilot Dia (MPN 902-000-308)
KEO Counterbore: For #8 Screw, 1/32" Oversized, 19/64 in Bore Dia, 0.195 in Pilot Dia (MPN 902-000-105)
KEO
KEO Counterbore: For #8 Screw, 1/32" Oversized, 19/64 in Bore Dia, 0.195 in Pilot Dia (MPN 902-000-105)
KEO Counterbore: For 3/8" Screw, 1/64" Oversized, 19/32 in Bore Dia, 0.39 in Pilot Dia (MPN 902-000-311)
KEO
KEO Counterbore: For 3/8" Screw, 1/64" Oversized, 19/32 in Bore Dia, 0.39 in Pilot Dia (MPN 902-000-311)