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OSG Spiral Flute Tap: 1/2"-20 UNF, H5 / 2B-3B, 3 Flute, Bottoming Chamfer - Spiral-Flute Taps for Steel & Stainless Steel
OSGSpiral-Flute Taps for Steel & Stainless Steel

OSG Spiral Flute Tap: 1/2"-20 UNF, H5 / 2B-3B, 3 Flute, Bottoming Chamfer

The OSG Spiral Flute Tap (1/2"-20 UNF) is a bottoming-chamfer, 3-flute tap made from V-coated powdered metal, rated H5 / 2B-3B (MPN 0143608). Designed for threading steel and stainless steel, it is one of thousands…

SKU 3G-OTH-217876

Brand
OSG
Item
Spiral Flute Tap: 1/2"-20 UNF, H5 / 2B-3B, 3 Flute, Bottoming Chamfer
Category
Spiral-Flute Taps for Steel & Stainless Steel
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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
0143608
Type
H5 / 2B-3B, Bottoming Chamfer, V Coated Powdered Metal
Flute
3

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

Product Description

The OSG Spiral Flute Tap (1/2"-20 UNF) is a bottoming-chamfer, 3-flute tap made from V-coated powdered metal, rated H5 / 2B-3B (MPN 0143608). Designed for threading steel and stainless steel, it is one of thousands of industrial consumables 3G Electric sources and supports across 14 departments, with specialist expertise in combustion, pumps, and controls.

Frequently Asked Questions

What is the OSG spiral flute tap 0143608 used for?

The OSG spiral flute tap 0143608 is designed for threading blind holes in steel and stainless steel. Its V coated powdered metal construction and bottoming chamfer allow it to cut threads close to the bottom of the hole, making it ideal for automotive, aerospace, and general manufacturing applications.

What are the specifications of the OSG 1/2-20 UNF spiral flute tap?

This OSG tap has a 1/2-20 UNF thread size, H5 / 2B-3B tolerance, 3 flutes, and a bottoming chamfer. It is made from V coated powdered metal, part number 0143608. The spiral flute design efficiently evacuates chips upward, preventing clogging in blind-hole threading operations.

Where to buy OSG taps in worldwide?

3G Electric supplies OSG taps like the 0143608 to customers worldwide. As a global industrial solutions provider, we handle full logistics, customs clearance, and delivery to your facility. Contact us for pricing and lead time on this and other OSG cutting tools.

How to select the right spiral flute tap for steel?

For steel, choose a spiral flute tap with a coating like V coated powdered metal to reduce friction and extend tool life. Match the thread size (e.g., 1/2-20 UNF) and chamfer type (bottoming for blind holes) to your application. OSG taps are a reliable choice for consistent thread quality in hardened materials.

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 spiral-flute taps for steel & stainless steel. 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 Spiral Flute Tap: 7/16"-20 UNF, H5 / 2B-3B, 3 Flute, Bottoming Chamfer, V Coated Powdered Metal (MPN 0143408)
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OSG Spiral Flute Tap: 7/16"-20 UNF, H5 / 2B-3B, 3 Flute, Bottoming Chamfer, V Coated Powdered Metal (MPN 0143408)
OSG Spiral Flute Tap: 1/2"-20 UNF, H3 / 2B-3B, 3 Flute, Bottoming Chamfer, V Coated Powdered Metal (MPN 0143508)
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OSG Spiral Flute Tap: 1/2"-20 UNF, H3 / 2B-3B, 3 Flute, Bottoming Chamfer, V Coated Powdered Metal (MPN 0143508)
OSG Spiral Flute Tap: 5/16"-24 UNF, H3 / 2B-3B, 3 Flute, Bottoming Chamfer, V Coated Powdered Metal (MPN 0142908)
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OSG Spiral Flute Tap: 5/16"-24 UNF, H3 / 2B-3B, 3 Flute, Bottoming Chamfer, V Coated Powdered Metal (MPN 0142908)
OSG Spiral Flute Tap: 5/16"-24 UNF, H4 / 2B-3B, 3 Flute, Bottoming Chamfer, V Coated Powdered Metal (MPN 0143008)
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OSG Spiral Flute Tap: 5/16"-24 UNF, H4 / 2B-3B, 3 Flute, Bottoming Chamfer, V Coated Powdered Metal (MPN 0143008)
OSG Spiral Flute Tap: 7/16"-20 UNF, H3 / 2B-3B, 3 Flute, Bottoming Chamfer, V Coated Powdered Metal (MPN 0143308)
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OSG Spiral Flute Tap: 7/16"-20 UNF, H3 / 2B-3B, 3 Flute, Bottoming Chamfer, V Coated Powdered Metal (MPN 0143308)
OSG Spiral Flute Tap: 3/8"-24 UNF, H4 / 2B-3B, 3 Flute, Bottoming Chamfer, V Coated Powdered Metal (MPN 0143208)
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OSG Spiral Flute Tap: 3/8"-24 UNF, H4 / 2B-3B, 3 Flute, Bottoming Chamfer, V Coated Powdered Metal (MPN 0143208)

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