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OSG #4-40 UNC General Purpose Spiral-Flute Tap - General Purpose Spiral-Flute Taps
OSGGeneral Purpose Spiral-Flute Taps

OSG #4-40 UNC General Purpose Spiral-Flute Tap

The OSG Spiral Flute Tap (#4-40 UNC, MPN 1406500) is a general-purpose spiral-flute tap with a bottoming chamfer, 2 flutes, and H2 / 2B-3B tolerance, made from high-speed steel. 3G Electric interprets your demand for…

SKU 3G-OTH-230274

Brand
OSG
Item
#4-40 UNC General Purpose Spiral-Flute Tap
Part Number
1406500
Category
General Purpose Spiral-Flute Taps
Available to Order
Also known as:1406500OSG
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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
1406500
Type
H2 / 2B-3B, Bottoming Chamfer, High Speed Steel
Flute
2

Technical Documents

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

Product Description

The OSG Spiral Flute Tap (#4-40 UNC, MPN 1406500) is a general-purpose spiral-flute tap with a bottoming chamfer, 2 flutes, and H2 / 2B-3B tolerance, made from high-speed steel. 3G Electric interprets your demand for this OEM-specified tool and delivers it across 14 industrial departments — with specialist depth in combustion, pumps, and controls as a trust anchor, not a limit.

Frequently Asked Questions

What is the OSG spiral flute tap #4-40 UNC used for?

The OSG spiral flute tap #4-40 UNC is designed for threading blind holes in materials like steel and aluminum. Its spiral flute design lifts 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 #4-40 UNC?

The OSG spiral flute tap has a #4-40 UNC thread size, H2 / 2B-3B tolerance, 2 flutes, and a bottoming chamfer. It is made from high-speed steel (HSS) and has manufacturer part number 1406500. This tap is suitable for threading blind holes in various materials, providing accurate and consistent thread formation.

Where to buy OSG spiral flute taps in worldwide?

You can source OSG spiral flute taps worldwide through 3G Electric, a global industrial equipment distributor. We handle full logistics, customs clearance, and delivery to your location. Contact us for availability and lead times. 3G Electric supplies genuine OSG taps, including the #4-40 UNC model (MPN 1406500), to customers worldwide.

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

To select the right OSG spiral flute tap for blind holes, match the thread size (e.g., #4-40 UNC) and tolerance (H2 / 2B-3B) to your application. Choose a bottoming chamfer for threading to the bottom of the hole. Ensure the tap material (HSS) suits your workpiece. OSG taps are designed for efficient chip evacuation in blind-hole threading.

Used in

Common applications for OSG
Aerospace — OSG STI taps for installing helical wire thread inserts in aluminum components
Automotive — OSG spiral-point taps for through-hole threading in engine blocks and transmission cases
General machining — OSG spiral-flute taps for blind-hole threading in steel and stainless steel parts
Heavy equipment repair — OSG thread-forming taps for creating threads in ductile iron and steel castings
Precision manufacturing — OSG solid carbide chucking reamers for finishing holes in hydraulic manifolds
Die and mold — OSG coolant-through solid carbide drills for deep-hole drilling in tool steels
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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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