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OSG Spiral Flute Tap: #12-28 UNF, H3 / 2B-3B, 2 Flute - Spiral-Flute Taps for Steel & Stainless Steel
OSGSpiral-Flute Taps for Steel & Stainless Steel

OSG Spiral Flute Tap: #12-28 UNF, H3 / 2B-3B, 2 Flute

The OSG Spiral Flute Tap (#12-28 UNF, MPN 1650501508) is a spiral-flute tap for steel and stainless steel, featuring a H3 / 2B-3B tolerance, 2-flute design, and modified bottoming chamfer. 3G Electric interprets this…

SKU 3G-OTH-218701

Brand
OSG
Item
Spiral Flute Tap: #12-28 UNF, H3 / 2B-3B, 2 Flute
Category
Spiral-Flute Taps for Steel & Stainless Steel
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Technical Specifications

OSG
Manufacturer Part Number
1650501508
Type
H3 / 2B-3B, Modified Bottoming Chamfer
Flute
2
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OSG Products
3G Electric (S) Pte. Ltd. — Singapore

Product Description

The OSG Spiral Flute Tap (#12-28 UNF, MPN 1650501508) is a spiral-flute tap for steel and stainless steel, featuring a H3 / 2B-3B tolerance, 2-flute design, and modified bottoming chamfer. 3G Electric interprets this demand and sources the genuine OSG product, backed by specialist expertise across 14 industrial departments.

Frequently Asked Questions

What is the OSG Spiral Flute Tap #12-28 UNF used for?

The OSG Spiral Flute Tap #12-28 UNF is designed for threading blind holes in steel and stainless steel. Its spiral flute design evacuates chips upward, preventing clogging, making it ideal for automotive, aerospace, and general manufacturing applications where clean, accurate threads are required.

What are the specifications of the OSG Spiral Flute Tap #12-28 UNF?

This OSG tap has a #12-28 UNF thread size, H3 / 2B-3B tolerance, 2 flutes, and a modified bottoming chamfer. The manufacturer part number is 1650501508. It is designed for threading steel and stainless steel, providing precise thread formation in blind-hole applications.

Where to buy the OSG Spiral Flute Tap #12-28 UNF worldwide?

You can source the OSG Spiral Flute Tap #12-28 UNF through 3G Electric, a global industrial equipment distributor. We handle full logistics, customs clearance, and delivery to worldwide destinations, ensuring you receive genuine OSG tooling for your manufacturing operations.

How to select the correct OSG Spiral Flute Tap for steel?

Select an OSG spiral flute tap based on thread size, tolerance class, and material. For steel and stainless steel blind holes, use a tap with a modified bottoming chamfer and H3 / 2B-3B tolerance. Ensure the tap matches your hole depth and thread requirements for optimal chip evacuation and thread quality.

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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