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OSG Countersink: 90°, 6 Flute, 5/8 in Body Dia - Smooth-Finish Six-Flute Countersinks
OSGSmooth-Finish Six-Flute Countersinks

OSG Countersink: 90°, 6 Flute, 5/8 in Body Dia

OSG Smooth-Finish Six-Flute Countersinks.

SKU 3G-OTH-188425

Also listed as: 7066250090 · 706 6250 090

Brand
OSG
Item
Countersink: 90°, 6 Flute, 5/8 in Body Dia
Category
Smooth-Finish Six-Flute Countersinks
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Worldwide DHL shipping from Singapore; 7–14 business days door-to-door for most destinations.
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Invoicing in USD. Bank transfer (SWIFT) and corporate PO accepted.

Technical Specifications

OSG
Manufacturer Part Number
706-6250-090

Technical Documents

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

Product Description

OSG Smooth-Finish Six-Flute Countersinks.

Frequently Asked Questions

What is the OSG 706-6250-090 countersink used for?

The OSG 706-6250-090 is a 90°, 6-flute carbide countersink used for deburring and chamfering holes in metal, plastics, and composites. Its six-flute design provides smooth finishes and reduces chatter, making it ideal for precision machining in aerospace, automotive, and general manufacturing applications.

What are the specifications of the OSG 706-6250-090 countersink?

The OSG 706-6250-090 is a 90° countersink with a 5/8 in body diameter, 6 flutes, and a carbide construction. The manufacturer part number is 706-6250-090. It is designed for smooth-finish applications and is suitable for use with various materials in industrial machining.

Where to buy the OSG 706-6250-090 countersink worldwide?

You can source the OSG 706-6250-090 countersink through 3G Electric, a global industrial equipment distributor. We handle full logistics, customs clearance, and delivery to worldwide destinations. Contact us for availability and lead times; we provide reliable sourcing for this OSG tool.

How to select the right OSG countersink for your application?

To select the right OSG countersink, match the angle (e.g., 90°) and body diameter (e.g., 5/8 in) to your hole size and material. For smooth finishes, choose a 6-flute carbide design like the 706-6250-090. Consider material hardness and required chamfer depth; OSG offers various flute counts and coatings for specific applications.

Used in

Common applications for OSG
Automotive engine block production — OSG micro drill bits for oil gallery and coolant passage drilling in cast iron
Medical device manufacturing — OSG micro drill bits for drilling bone screw pilot holes in stainless steel implants
Aerospace component machining — OSG micro drill bits for fastener holes in titanium alloy structural parts
Mold and die making — OSG micro drill bits for cooling channel drilling in hardened tool steel (HRC 45-50)
Electronics enclosure fabrication — OSG micro drill bits for precision holes in aluminum alloy housings (with appropriate coating selection)
General engineering job shops — OSG micro drill bits for small-diameter hole drilling in mild steel and alloy steel parts

OSG Products

3G Electric supplies OSG smooth-finish six-flute countersinks. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.

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Compatible alternatives & equivalents

Cross-referenced by specification & description
OSG Straight Flute Tap: M10x1.5 Metric, D6 / 4H-6H, 4 Flute, Bottoming Chamfer, Carbide (MPN 1006102000)
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OSG Straight Flute Tap: M10x1.5 Metric, D6 / 4H-6H, 4 Flute, Bottoming Chamfer, Carbide (MPN 1006102000)
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OSG Straight Flute Tap: M10x1.25 Metric, OH4 / 6H, 4 Flute, Bottoming Chamfer, Carbide (MPN 22834)
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OSG Straight Flute Tap: M10x1.25 Metric, OH4 / 6H, 4 Flute, Bottoming Chamfer, Carbide (MPN 22834)
OSG Straight Flute Tap: M10x1.5 Metric, D6 / 4H-6H, 4 Flute, Plug Chamfer, Carbide (MPN 1006101000)
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OSG Straight Flute Tap: M10x1.5 Metric, D6 / 4H-6H, 4 Flute, Plug Chamfer, Carbide (MPN 1006101000)
OSG Straight Flute Tap: M10x1.25 Metric, OH4 / 6H, 4 Flute, Modified Bottoming Chamfer, Carbide (MPN 24034)
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OSG Straight Flute Tap: M10x1.25 Metric, OH4 / 6H, 4 Flute, Modified Bottoming Chamfer, Carbide (MPN 24034)
This straight-flute machine tap is designed for threading aluminum and non-ferrous materials. It features a metric M6x1 thread size, D5 / 4H-6H tolerance class, 4 flutes, and a plug chamfer. The carbide construction supports high-speed threading in through-hole applications
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This straight-flute machine tap is designed for threading aluminum and non-ferrous materials. It features a metric M6x1 thread size, D5 / 4H-6H tolerance class, 4 flutes, and a plug chamfer. The carbide construction supports high-speed threading in through-hole applications

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This OSG countersink features a six-flute carbide design for reduced chatter and a smooth finish. The 82° included angle is suited for creating chamfered holes in metal and composite materials. Common applications include deburring and countersinking in machining operations
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OSG Countersink: 82°, 6 Flute, 5/8 in Body Dia, Carbide (MPN 706-6250-082)
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OSG Countersink: 90°, 6 Flute, 3/8 in Body Dia, Carbide (MPN 706-3750-090)
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