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OSG Oversized Spiral-Point Tap, 3/8"-16 UNC, 2B+ Fit, 3 Flute, Plug Chamfer, HSS - Oversized Spiral-Point Taps
OSGOversized Spiral-Point Taps

OSG Oversized Spiral-Point Tap, 3/8"-16 UNC, 2B+ Fit, 3 Flute, Plug Chamfer, HSS

OSG Oversized Spiral-Point Taps.

SKU 3G-OTH-251291

Brand
OSG
Item
Oversized Spiral-Point Tap, 3/8"-16 UNC, 2B+ Fit, 3 Flute, Plug Chamfer, HSS
Category
Oversized Spiral-Point 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
1591600

Technical Documents

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

Product Description

OSG Oversized Spiral-Point Taps.

Frequently Asked Questions

What is the OSG Spiral Point Tap 1591600 used for?

The OSG Spiral Point Tap 1591600 is used for threading through-holes in metal, primarily in automotive, aerospace, and general manufacturing. Its spiral-point design pushes chips forward, reducing clogging and improving thread quality in production environments.

What are the specifications of the OSG Spiral Point Tap 1591600?

This OSG tap has a 3/8"-16 UNC thread size, 2B+ class of fit, 3 flutes, and a plug chamfer. It is made of high-speed steel (HSS) and is an oversized spiral-point tap designed for through-hole threading. The manufacturer part number is 1591600.

Where to buy the OSG Spiral Point Tap 1591600 worldwide?

You can source the OSG Spiral Point Tap 1591600 through 3G Electric, a global industrial equipment distributor. We handle full logistics, customs clearance, and delivery to worldwide destinations, ensuring you receive the correct tap for your threading application.

How to select the correct OSG Spiral Point Tap for through-holes?

Select an OSG spiral point tap like the 1591600 for through-holes to push chips ahead and prevent packing. Match the thread size (3/8"-16 UNC), class of fit (2B+), and material (HSS) to your workpiece. For oversized threads, confirm the tap is marked oversized to achieve proper fit.

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-point taps. 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
Spiral-point tap designed for through-hole threading in metalworking. The spiral point pushes chips forward to prevent clogging, enabling efficient thread cutting. Made from high-speed steel with a plug chamfer and 2 flutes. Oversized for tighter thread fits
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Spiral-point tap designed for through-hole threading in metalworking. The spiral point pushes chips forward to prevent clogging, enabling efficient thread cutting. Made from high-speed steel with a plug chamfer and 2 flutes. Oversized for tighter thread fits
Spiral-point tap for threading through-holes in metal. Features a 5/16"-24 UNF thread size, 2B+ tolerance class, 2 flutes, plug chamfer, and high-speed steel construction. The spiral-point design pushes chips forward to reduce clogging. Suitable for production environments requiring precise UNF threads
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Spiral-point tap for threading through-holes in metal. Features a 5/16"-24 UNF thread size, 2B+ tolerance class, 2 flutes, plug chamfer, and high-speed steel construction. The spiral-point design pushes chips forward to reduce clogging. Suitable for production environments requiring precise UNF threads
This OSG oversized spiral-point tap is designed for threading through-holes in metal, with a spiral-point geometry that pushes chips forward to reduce clogging. It features a 3/8"-24 UNF thread, 2B+ tolerance class, 3 flutes, and a plug chamfer, made from high-speed steel. Suitable for production tapping in steel, aluminum, and similar materials
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This OSG oversized spiral-point tap is designed for threading through-holes in metal, with a spiral-point geometry that pushes chips forward to reduce clogging. It features a 3/8"-24 UNF thread, 2B+ tolerance class, 3 flutes, and a plug chamfer, made from high-speed steel. Suitable for production tapping in steel, aluminum, and similar materials
High-speed steel spiral-point tap with 5/8"-11 UNC thread, 2B+ tolerance, 3 flutes, and plug chamfer. The 2B+ class provides a slightly oversized pitch diameter for improved thread fit. Designed for through-hole threading, the spiral point pushes chips forward to prevent clogging and enable faster cycles in materials such as steel and aluminum
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High-speed steel spiral-point tap with 5/8"-11 UNC thread, 2B+ tolerance, 3 flutes, and plug chamfer. The 2B+ class provides a slightly oversized pitch diameter for improved thread fit. Designed for through-hole threading, the spiral point pushes chips forward to prevent clogging and enable faster cycles in materials such as steel and aluminum
This OSG oversized spiral-point tap is designed for through-hole threading in ferrous and non-ferrous materials. It features a 1/2"-13 UNC thread size, 2B+ tolerance class, 3 flutes, and a plug chamfer. Constructed from high-speed steel, the spiral-point design pushes chips ahead to reduce clogging and breakage. Common applications include automotive, aerospace, and general manufacturing where precise UNC threads are required
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This OSG oversized spiral-point tap is designed for through-hole threading in ferrous and non-ferrous materials. It features a 1/2"-13 UNC thread size, 2B+ tolerance class, 3 flutes, and a plug chamfer. Constructed from high-speed steel, the spiral-point design pushes chips ahead to reduce clogging and breakage. Common applications include automotive, aerospace, and general manufacturing where precise UNC threads are required
This OSG spiral-point tap is designed for through-hole threading in metal, steel, and alloys. The #8-32 UNC thread size with 2B+ tolerance provides a tighter fit for plated or coated holes. Its 2-flute, plug chamfer design and high-speed steel construction enable efficient chip evacuation and clean thread formation
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This OSG spiral-point tap is designed for through-hole threading in metal, steel, and alloys. The #8-32 UNC thread size with 2B+ tolerance provides a tighter fit for plated or coated holes. Its 2-flute, plug chamfer design and high-speed steel construction enable efficient chip evacuation and clean thread formation

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Oversized spiral-point tap for through-hole threading, with 2B+ tolerance for tighter thread fit. Constructed from black oxide high-speed steel with a plug chamfer and 3 flutes. The spiral-point geometry pushes chips forward, reducing clogging in production tapping of steel and aluminum
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This OSG spiral-point tap is designed for through-hole threading in production machining. It features a #10-32 UNF thread size with a 2B+ oversized thread class, 2 flutes, and a plug chamfer. Made from high-speed steel (HSS), it pushes chips forward during tapping to prevent clogging and enable faster cycles in materials such as steel and aluminum
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This OSG spiral-point tap is designed for through-hole threading in production machining. It features a #10-32 UNF thread size with a 2B+ oversized thread class, 2 flutes, and a plug chamfer. Made from high-speed steel (HSS), it pushes chips forward during tapping to prevent clogging and enable faster cycles in materials such as steel and aluminum
Oversized spiral-point tap for through-hole threading. H11 tolerance, plug chamfer, black oxide vanadium high-speed steel, 3 flutes. Designed to push chips ahead, reducing clogging in production threading applications
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Oversized spiral-point tap for through-hole threading. H11 tolerance, plug chamfer, black oxide vanadium high-speed steel, 3 flutes. Designed to push chips ahead, reducing clogging in production threading applications
Oversized spiral-point tap for through-hole threading, with 2B+ tolerance for slightly larger thread diameter. Features TiCN-coated high-speed steel, plug chamfer, and 3-flute design. Suitable for production tapping in steel and alloys
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Oversized spiral-point tap for through-hole threading, with 2B+ tolerance for slightly larger thread diameter. Features TiCN-coated high-speed steel, plug chamfer, and 3-flute design. Suitable for production tapping in steel and alloys
Oversized spiral-point tap for through-hole threading. Features a 2B+ thread class to accommodate plating or coating buildup. Made from TiCN-coated high-speed steel with a plug chamfer and 2-flute design. Suitable for production tapping in steel and aluminum
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Oversized spiral-point tap for through-hole threading. Features a 2B+ thread class to accommodate plating or coating buildup. Made from TiCN-coated high-speed steel with a plug chamfer and 2-flute design. Suitable for production tapping in steel and aluminum
This OSG spiral-point tap is designed for through-hole threading in metalworking. It features a 1/2"-20 UNF thread with 2B+ tolerance for slightly oversized threads, 3 flutes, and a plug chamfer. Made from high-speed steel, it is suited for high-speed production tapping in materials such as steel and aluminum
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This OSG spiral-point tap is designed for through-hole threading in metalworking. It features a 1/2"-20 UNF thread with 2B+ tolerance for slightly oversized threads, 3 flutes, and a plug chamfer. Made from high-speed steel, it is suited for high-speed production tapping in materials such as steel and aluminum
OSG oversized spiral-point tap with M7x1 metric thread, D11 oversize, plug chamfer, and 3 flutes. Constructed from black oxide vanadium high-speed steel. Designed for through-hole threading in production environments, the spiral point pushes chips ahead to prevent clogging and enable efficient thread formation in materials such as steel and aluminum
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OSG oversized spiral-point tap with M7x1 metric thread, D11 oversize, plug chamfer, and 3 flutes. Constructed from black oxide vanadium high-speed steel. Designed for through-hole threading in production environments, the spiral point pushes chips ahead to prevent clogging and enable efficient thread formation in materials such as steel and aluminum
This OSG oversized spiral-point tap features 5/16"-18 UNC thread, H11 tolerance, 3 flutes, and a plug chamfer. Designed for through-hole threading, its spiral point pushes chips ahead to prevent clogging, enabling efficient tapping in materials such as steel, aluminum, and cast iron. Suitable for production machining in general manufacturing applications
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This OSG oversized spiral-point tap features 5/16"-18 UNC thread, H11 tolerance, 3 flutes, and a plug chamfer. Designed for through-hole threading, its spiral point pushes chips ahead to prevent clogging, enabling efficient tapping in materials such as steel, aluminum, and cast iron. Suitable for production machining in general manufacturing applications