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KEO Center Drill: Plain Type, #4 1/2, 60°, 8 in Overall Lg - Plain-Tip Center Drills
KEOPlain-Tip Center Drills

KEO Center Drill: Plain Type, #4 1/2, 60°, 8 in Overall Lg

The KEO Center Drill: Plain Type is a double-end, plain-tip center drill from KEO, model number 907-000-551. It features a #4 1/2 size, 60° angle, 8-inch overall length, and is made of TiN-coated high-speed steel.

SKU 3G-OTH-183236

Brand
KEO
Item
Center Drill: Plain Type, #4 1/2, 60°, 8 in Overall Lg
Category
Plain-Tip Center Drills
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Technical Specifications

KEO
Manufacturer Part Number
907-000-551
Type
#4 1/2, 60°, TiN Coated High Speed Steel
Overall Lg
8 in
End Type
Double End
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KEO Products
3G Electric (S) Pte. Ltd. — Singapore

Product Description

The KEO Center Drill: Plain Type is a double-end, plain-tip center drill from KEO, model number 907-000-551. It features a #4 1/2 size, 60° angle, 8-inch overall length, and is made of TiN-coated high-speed steel.

Frequently Asked Questions

What is a KEO center drill used for?

A KEO center drill creates a conical starting hole in a workpiece for lathe centers or subsequent drilling operations. This plain-type, double-end design with a 60° angle and TiN coating is common in precision machining, toolmaking, and metalworking applications.

What are the specifications of the KEO center drill 907-000-551?

The KEO center drill 907-000-551 is a plain-type, double-end tool with a #4 1/2 size, 60° included angle, and 8 in overall length. It is made of TiN-coated high-speed steel for increased wear resistance and lubricity during use.

Where to buy KEO center drills worldwide?

3G Electric supplies KEO center drills like the 907-000-551 to customers worldwide. We handle full logistics, customs clearance, and delivery to your facility. Contact us for pricing and lead time on this plain-type, double-end center drill.

How to select the right center drill size?

Select a center drill size based on the workpiece diameter and the lathe center's taper. The #4 1/2 size with a 60° angle is standard for medium-duty work. Ensure the overall length, here 8 in, provides adequate reach for your setup. Consult a machining reference for exact sizing.

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 plain-tip center drills. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.

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