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OSG Spiral Flute Tap: 7/16"-14 UNC, 2B, 3 Flute, Bottoming Chamfer - General Purpose Spiral-Flute Taps
OSGGeneral Purpose Spiral-Flute Taps

OSG Spiral Flute Tap: 7/16"-14 UNC, 2B, 3 Flute, Bottoming Chamfer

The OSG Spiral Flute Tap (7/16"-14 UNC, MPN 2986901) is a general-purpose spiral-flute tap with a 2B thread class, bottoming chamfer, and black oxide high-speed steel construction. It features 3 flutes for efficient…

SKU 3G-OTH-230061

Brand
OSG
Item
Spiral Flute Tap: 7/16"-14 UNC, 2B, 3 Flute, Bottoming Chamfer
Category
General Purpose Spiral-Flute Taps
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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

OSG
Manufacturer Part Number
2986901
Type
2B, Bottoming Chamfer, Black Oxide High Speed Steel
Flute
3

Technical Documents

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

Product Description

The OSG Spiral Flute Tap (7/16"-14 UNC, MPN 2986901) is a general-purpose spiral-flute tap with a 2B thread class, bottoming chamfer, and black oxide high-speed steel construction. It features 3 flutes for efficient chip evacuation in through-hole and blind-hole threading applications.

Frequently Asked Questions

What is the OSG spiral flute tap 2986901 used for?

The OSG spiral flute tap 2986901 is designed for threading blind holes in ferrous and non-ferrous materials. Its spiral flute design evacuates chips upward, preventing clogging and ensuring clean threads. It is commonly used in automotive, aerospace, and general manufacturing applications where precise internal threading is required.

What are the specifications of the OSG spiral flute tap 2986901?

The OSG spiral flute tap 2986901 has a thread size of 7/16"-14 UNC, a 2B class of fit, 3 flutes, and a bottoming chamfer. It is made from black oxide high-speed steel (HSS) for wear resistance and reduced friction. The manufacturer part number is 2986901.

Where to buy the OSG spiral flute tap 2986901 worldwide?

You can source the OSG spiral flute tap 2986901 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 time; we supply this tap to procurement teams and engineers globally.

How to select the correct OSG spiral flute tap for blind holes?

For blind holes, choose a bottoming chamfer tap like the OSG 2986901, which threads to the bottom. Ensure the tap size matches the required thread (e.g., 7/16"-14 UNC) and class of fit (2B). Use spiral flute taps for chip evacuation. Always match the tap material to the workpiece—HSS for general use.

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 general purpose spiral-flute taps. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.

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Cross-referenced by specification & description
OSG Spiral Flute Tap: 7/16"-14 UNC, 2B, 3 Flute, Bottoming Chamfer, High Speed Steel (MPN 2986900)
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General purpose spiral-flute tap for threading blind holes in ferrous and non-ferrous materials. Features a bottoming chamfer for threading to the bottom of blind holes, and TiN coating to reduce friction. Suitable for applications in automotive, aerospace, and general manufacturing
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General purpose spiral-flute tap for threading blind holes in ferrous and non-ferrous materials. Features a bottoming chamfer for threading to the bottom of blind holes, and TiN coating to reduce friction. Suitable for applications in automotive, aerospace, and general manufacturing

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