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OSG Spiral Flute Tap: 1/4"-28 UNF, H4 / 2B-3B, 3 Flute - Spiral-Flute Taps for Steel & Stainless Steel
OSGSpiral-Flute Taps for Steel & Stainless Steel

OSG Spiral Flute Tap: 1/4"-28 UNF, H4 / 2B-3B, 3 Flute

SKU 3G-OTH-218538

Brand
OSG
Item
Spiral Flute Tap: 1/4"-28 UNF, H4 / 2B-3B, 3 Flute
Category
Spiral-Flute Taps for Steel & Stainless Steel
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Technical Specifications

OSG
Manufacturer Part Number
0137408
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OSG Products
3G Electric (S) Pte. Ltd. — Singapore

Frequently Asked Questions

What is the OSG spiral flute tap 0137408 used for?

The OSG spiral flute tap 0137408 is designed for threading blind holes in steel and stainless steel. Its spiral flute design lifts chips upward, preventing clogging and ensuring clean threads. It is commonly used in automotive, aerospace, and general manufacturing applications requiring precise internal threads.

What are the specifications of the OSG spiral flute tap 0137408?

This OSG tap has a thread size of 1/4"-28 UNF, with a H4 / 2B-3B tolerance class. It features 3 flutes and a bottoming chamfer for threading to the bottom of blind holes. The manufacturer part number is 0137408, and it is designed for steel and stainless steel materials.

Where to buy the OSG spiral flute tap 0137408 worldwide?

You can source the OSG spiral flute tap 0137408 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 genuine OSG cutting tools for your manufacturing needs.

How to select the correct OSG tap for steel threading?

For threading steel, select an OSG spiral flute tap with the correct thread size and pitch, such as 1/4"-28 UNF. Ensure the tap has a H4 / 2B-3B tolerance for proper fit. Use a bottoming chamfer for blind holes. Always match the tap material and coating to the workpiece hardness for optimal tool life.

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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