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KEO High-Precision Radius-Tip Center Drill #4 1/2, 118°, HSS, 2-1/2" OAL - High-Precision Radius-Tip Center Drills
KEOHigh-Precision Radius-Tip Center Drills

KEO High-Precision Radius-Tip Center Drill #4 1/2, 118°, HSS, 2-1/2" OAL

The KEO Center Drill: Radius Type is a high-precision radius-tip center drill from KEO, model number 906-000-311. It is a double-ended tool made of high-speed steel, with a #4 1/2 size, 118° point angle, and 2 1/2…

SKU 3G-OTH-199475

Also listed as: 906000311 · 906 000 311

Brand
KEO
Item
High-Precision Radius-Tip Center Drill #4 1/2, 118°, HSS, 2-1/2" OAL
Part Number
906-000-311
Category
High-Precision Radius-Tip Center Drills
Available to Order
Also known as:906-000-311KEO
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Technical Specifications

KEO
Manufacturer Part Number
906-000-311
Type
#4 1/2, 118°, High Speed Steel
Overall Lg
2 1/2 in

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

Product Description

The KEO Center Drill: Radius Type is a high-precision radius-tip center drill from KEO, model number 906-000-311. It is a double-ended tool made of high-speed steel, with a #4 1/2 size, 118° point angle, and 2 1/2 inches overall length.

Frequently Asked Questions

What is a KEO Center Drill: Radius Type used for?

A KEO Center Drill: Radius Type creates precise conical starting holes for lathe centers or drilling operations. Its radius tip reduces stress concentration, making it ideal for high-precision machining in toolrooms and production environments.

What are the specifications of the KEO Center Drill 906-000-311?

The KEO Center Drill 906-000-311 is a double-ended high-speed steel tool, size #4 1/2, with a 118° point angle and 2 1/2 inches overall length. It is designed for radius-type center drilling applications requiring durability and accuracy.

Where to buy KEO Center Drills worldwide?

3G Electric supplies KEO Center Drills worldwide, handling full logistics and customs clearance. As a global industrial solutions provider, we source and deliver genuine KEO tools like the 906-000-311 to support your precision machining needs across industries.

How to select the right KEO Center Drill size?

Select a KEO Center Drill size based on the workpiece diameter and required center hole dimensions. For radius-type drills like the #4 1/2, match the drill size to the lathe center's taper. Consult machining guidelines to ensure proper fit and avoid tool breakage.

Used in

Common applications for KEO
General machining — KEO single-flute countersinks for deburring and chamfering holes in steel and aluminum.
Automotive repair — KEO 82° countersinks for creating seats for flathead screws in engine and chassis components.
Aerospace manufacturing — KEO TiAlN-coated carbide countersinks for precision chamfering of fastener holes in hard alloys.
MRO operations — KEO left-hand keyseat cutters for milling keyways in shafts during equipment repair.
Metal fabrication — KEO 90° countersinks for chamfering plate and structural steel before welding.
Machine shop — KEO 100° countersinks for deburring cross-drilled holes in hydraulic manifolds.
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KEO Products

3G Electric supplies KEO high-precision radius-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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