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OSG Oversized Spiral-Flute Tap: 1/2"-20 UNF - Oversized Spiral-Flute Taps
OSGOversized Spiral-Flute Taps

OSG Oversized Spiral-Flute Tap: 1/2"-20 UNF

OSG Oversized Spiral-Flute Taps.

SKU 3G-OTH-211302

Brand
OSG
Item
Oversized Spiral-Flute Tap: 1/2"-20 UNF
Category
Oversized 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
2943001

Technical Documents

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

Product Description

OSG Oversized Spiral-Flute Taps.

Frequently Asked Questions

What is an OSG spiral flute tap used for?

An OSG spiral flute tap is used for threading blind holes in materials like steel and aluminum. Its spiral design pushes chips upward, preventing clogging and ensuring clean threads. This 1/2"-20 UNF tap with modified bottoming chamfer is ideal for applications requiring threads close to the hole bottom.

What are the specifications of the OSG 2943001 tap?

The OSG 2943001 is a spiral flute tap with size 1/2"-20 UNF, H11 / 2B tolerance, 3 flutes, and a modified bottoming chamfer. It is an oversized tap designed for threading blind holes in various materials. The part number is 2943001.

Where to buy OSG taps in worldwide?

3G Electric supplies OSG taps worldwide, handling logistics, customs, and delivery to your location. As a global industrial solutions provider, we source genuine OSG cutting tools like the 2943001 spiral flute tap. Contact us for pricing and lead time on this item.

How to select the right OSG tap for blind holes?

For blind holes, choose a spiral flute tap like the OSG 2943001 to evacuate chips upward. Match the tap size (e.g., 1/2"-20 UNF) and tolerance (H11 / 2B) to your thread requirements. A modified bottoming chamfer allows threading closer to the hole bottom. Consult OSG's technical data for material-specific speeds and feeds.

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 oversized 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
Oversized spiral-flute tap for threading blind holes. Features a modified bottoming chamfer for threading close to the hole bottom. Spiral flute design lifts chips upward, preventing clogging. Suitable for through-hole and blind-hole threading in general machining applications
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Oversized spiral-flute tap for threading blind holes. Features a modified bottoming chamfer for threading close to the hole bottom. Spiral flute design lifts chips upward, preventing clogging. Suitable for through-hole and blind-hole threading in general machining applications
This oversized spiral-flute tap is designed for threading blind holes in materials such as steel and aluminum. The 3-flute design and modified bottoming chamfer facilitate upward chip evacuation, making it suitable for applications requiring precise internal threads
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This oversized spiral-flute tap is designed for threading blind holes in materials such as steel and aluminum. The 3-flute design and modified bottoming chamfer facilitate upward chip evacuation, making it suitable for applications requiring precise internal threads
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Spiral-flute tap designed for threading blind holes in materials that produce stringy chips, such as steel and aluminum. The spiral flute lifts chips out of the hole to prevent clogging. Thread size: 3/8"-16 UNC, tolerance H11 / 2B, 3 flutes, modified bottoming chamfer for threading close to hole bottom
General purpose spiral-flute tap with 1/2"-20 UNF thread, H5 / 2B-3B tolerance, 3 flutes, and modified bottoming chamfer. Designed for threading blind holes in steel and aluminum; spiral flute lifts chips upward to prevent clogging
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General purpose spiral-flute tap with 1/2"-20 UNF thread, H5 / 2B-3B tolerance, 3 flutes, and modified bottoming chamfer. Designed for threading blind holes in steel and aluminum; spiral flute lifts chips upward to prevent clogging
General purpose spiral-flute tap for threading blind holes. Spiral flute design evacuates chips upward, preventing clogging. Modified bottoming chamfer allows threading close to hole bottom. Suitable for steel and aluminum
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General purpose spiral-flute tap for threading blind holes. Spiral flute design evacuates chips upward, preventing clogging. Modified bottoming chamfer allows threading close to hole bottom. Suitable for steel and aluminum
Oversized spiral-flute tap for threading blind holes. Features a modified bottoming chamfer for threading close to hole bottom. Spiral flute design lifts chips upward to prevent clogging. Thread size: 5/16"-18 UNC, H11 tolerance, 3 flutes
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Oversized spiral-flute tap for threading blind holes. Features a modified bottoming chamfer for threading close to hole bottom. Spiral flute design lifts chips upward to prevent clogging. Thread size: 5/16"-18 UNC, H11 tolerance, 3 flutes

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Oversized spiral-flute tap for threading blind holes in materials that produce stringy chips, such as steel and aluminum. The spiral flute design lifts chips out of the hole to prevent clogging. Thread size 5/16-24 UNF, H11 tolerance, 3 flutes, modified bottoming chamfer. Suitable for applications requiring a looser thread fit
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This OSG spiral-flute tap is designed for threading blind holes in materials such as steel and aluminum. The spiral flute geometry pushes chips upward, preventing clogging and ensuring clean threads. With a #10-32 UNF thread size, H11 tolerance, and modified bottoming chamfer, it is suited for precision threading applications where chip evacuation and thread accuracy are required
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This OSG spiral-flute tap is designed for threading blind holes in materials such as steel and aluminum. The spiral flute geometry pushes chips upward, preventing clogging and ensuring clean threads. With a #10-32 UNF thread size, H11 tolerance, and modified bottoming chamfer, it is suited for precision threading applications where chip evacuation and thread accuracy are required
This OSG spiral-flute tap is designed for threading blind holes in materials such as steel and aluminum. The spiral flute geometry pushes chips upward, preventing clogging and ensuring clean threads. With a modified bottoming chamfer, it is suited for applications requiring threads close to the hole bottom. Thread size: 7/16"-20 UNF, tolerance H11, 3 flutes
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This OSG spiral-flute tap is designed for threading blind holes in materials such as steel and aluminum. The spiral flute geometry pushes chips upward, preventing clogging and ensuring clean threads. With a modified bottoming chamfer, it is suited for applications requiring threads close to the hole bottom. Thread size: 7/16"-20 UNF, tolerance H11, 3 flutes
This OSG spiral-flute tap is designed for threading blind holes in ferrous and non-ferrous materials. The spiral flute geometry pushes chips upward, preventing clogging and ensuring clean threads. With a #10-24 UNC thread size, H11 tolerance, 3 flutes, and a modified bottoming chamfer, it is suited for applications requiring threads close to the hole bottom
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This OSG spiral-flute tap is designed for threading blind holes in ferrous and non-ferrous materials. The spiral flute geometry pushes chips upward, preventing clogging and ensuring clean threads. With a #10-24 UNC thread size, H11 tolerance, 3 flutes, and a modified bottoming chamfer, it is suited for applications requiring threads close to the hole bottom
This OSG spiral-flute tap is designed for threading blind holes in materials such as steel and stainless steel. The spiral flute geometry evacuates chips upward, preventing clogging and ensuring clean threads. With a modified bottoming chamfer, it allows threading close to the bottom of a hole. The D11 / 6H tolerance indicates an oversized thread suitable for use with coated or plated holes
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This OSG spiral-flute tap is designed for threading blind holes in materials such as steel and stainless steel. The spiral flute geometry evacuates chips upward, preventing clogging and ensuring clean threads. With a modified bottoming chamfer, it allows threading close to the bottom of a hole. The D11 / 6H tolerance indicates an oversized thread suitable for use with coated or plated holes
This OSG oversized spiral-flute tap features an M8x1.25 metric thread with D11 / 6H tolerance, 3 flutes, and a modified bottoming chamfer. Designed for threading blind holes, the spiral flute geometry lifts chips upward to prevent clogging and ensure clean threads. Suitable for precision threading applications in ferrous and non-ferrous materials
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This OSG oversized spiral-flute tap features an M8x1.25 metric thread with D11 / 6H tolerance, 3 flutes, and a modified bottoming chamfer. Designed for threading blind holes, the spiral flute geometry lifts chips upward to prevent clogging and ensure clean threads. Suitable for precision threading applications in ferrous and non-ferrous materials
Oversized spiral-flute tap for threading blind holes. Features a 3/8"-24 UNF thread, H11 tolerance, 3 flutes, and a modified bottoming chamfer. The spiral flute design pushes chips upward to prevent clogging, enabling clean threads near the hole bottom. Suitable for industrial machining applications
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Oversized spiral-flute tap for threading blind holes. Features a 3/8"-24 UNF thread, H11 tolerance, 3 flutes, and a modified bottoming chamfer. The spiral flute design pushes chips upward to prevent clogging, enabling clean threads near the hole bottom. Suitable for industrial machining applications