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OSG Spiral Flute Tap: 3/8"-16 UNC, H3 / 2B-3B, 3 Flute - Spiral-Flute Taps for Steel & Stainless Steel
OSGSpiral-Flute Taps for Steel & Stainless Steel

OSG Spiral Flute Tap: 3/8"-16 UNC, H3 / 2B-3B, 3 Flute

The OSG Spiral Flute Tap (3/8"-16 UNC, MPN 1645038163) is a 3-flute, modified bottoming chamfer tap with H3 / 2B-3B tolerance, designed for threading steel and stainless steel. 3G Electric interprets your demand for…

SKU 3G-OTH-217842

Brand
OSG
Item
Spiral Flute Tap: 3/8"-16 UNC, H3 / 2B-3B, 3 Flute
Category
Spiral-Flute Taps for Steel & Stainless Steel
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Technical Specifications

OSG
Manufacturer Part Number
1645038163
Type
H3 / 2B-3B, Modified Bottoming Chamfer
Flute
3
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OSG Products
3G Electric (S) Pte. Ltd. — Singapore

Product Description

The OSG Spiral Flute Tap (3/8"-16 UNC, MPN 1645038163) is a 3-flute, modified bottoming chamfer tap with H3 / 2B-3B tolerance, designed for threading steel and stainless steel. 3G Electric interprets your demand for this OEM-specified tool, sources it, and supports your application with specialist expertise across 14 industrial departments.

Frequently Asked Questions

What is the OSG spiral flute tap 3/8"-16 UNC used for?

This OSG spiral flute tap is designed for threading blind holes in steel and stainless steel. Its modified bottoming chamfer and 3-flute design efficiently evacuate chips upward, making it ideal for automotive, aerospace, and general manufacturing applications where clean, accurate threads are required.

What are the specifications of the OSG 1645038163 tap?

The OSG 1645038163 is a spiral flute tap with a 3/8"-16 UNC thread, H3 / 2B-3B tolerance, 3 flutes, and a modified bottoming chamfer. It is designed for threading steel and stainless steel. The H3 / 2B-3B designation ensures precise fit for class 2B and 3B thread classes.

Where to buy OSG taps in worldwide?

You can source the OSG 1645038163 spiral flute tap 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 tooling for your manufacturing needs.

How to select the correct OSG tap for steel threading?

For threading blind holes in steel, choose a spiral flute tap like the OSG 1645038163 with a modified bottoming chamfer. Ensure the tap size matches your thread specification (e.g., 3/8"-16 UNC) and tolerance class (H3 / 2B-3B). Use appropriate cutting fluid and follow manufacturer speed/feed recommendations for optimal 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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