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OSG 3/8"-16 UNC Spiral-Flute Extension Tap - Spiral-Flute Extension Taps for Steel & Stainless Steel
OSGSpiral-Flute Extension Taps for Steel & Stainless Steel

OSG 3/8"-16 UNC Spiral-Flute Extension Tap

OSG Spiral-Flute Extension Taps for Steel & Stainless Steel.

SKU 3G-OTH-315325

Brand
OSG
Item
3/8"-16 UNC Spiral-Flute Extension Tap
Category
Spiral-Flute Extension 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
0144401

Technical Documents

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

Product Description

OSG Spiral-Flute Extension Taps for Steel & Stainless Steel.

Frequently Asked Questions

What is OSG Extension Tap 0144401 used for?

The OSG Extension Tap 0144401 is a spiral-flute tap designed for threading blind holes in steel and stainless steel. Its extended length reaches deep cavities, while the bottoming chamfer and H3 / 2B-3B tolerance ensure precise thread fit in demanding industrial applications.

What are the specifications of OSG Extension Tap 0144401?

This OSG tap has a 3/8"-16 UNC thread, H3 / 2B-3B tolerance, 3 flutes, and a bottoming chamfer. It is a spiral-flute extension tap for steel and stainless steel, with manufacturer part number 0144401. These specs define its threading capability and material suitability.

Where to buy OSG Extension Tap 0144401 worldwide?

3G Electric supplies the OSG Extension Tap 0144401 to customers worldwide. We handle full logistics, customs clearance, and delivery to your site. Contact us for pricing and lead time on this precision threading tool for steel and stainless steel.

How to select the right OSG extension tap for steel?

Select an OSG extension tap based on thread size (e.g., 3/8"-16 UNC), chamfer type (bottoming for blind holes), flute design (spiral for chip evacuation), and material (steel or stainless steel). The H3 / 2B-3B tolerance ensures proper thread class. Consult OSG's technical data for optimal performance.

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 extension 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
Spiral-flute extension tap for threading blind holes in steel and stainless steel. Thread size 5/16"-18 UNC with H3 / 2B-3B tolerance class. Three flutes and bottoming chamfer enable threading to the bottom of blind holes while evacuating chips upward. Extended length provides access to deep or recessed areas
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Spiral-flute extension tap for threading blind holes in steel and stainless steel. Thread size 5/16"-18 UNC with H3 / 2B-3B tolerance class. Three flutes and bottoming chamfer enable threading to the bottom of blind holes while evacuating chips upward. Extended length provides access to deep or recessed areas
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Spiral-flute extension tap designed for threading blind holes in steel and stainless steel. The spiral-flute design evacuates chips upward, preventing clogging, while the bottoming chamfer allows threading close to the hole bottom. Thread size: 3/8"-24 UNF, tolerance H3 / 2B-3B, 3 flutes
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Spiral-flute extension tap designed for threading blind holes in steel and stainless steel. The spiral-flute design evacuates chips upward, preventing clogging, while the bottoming chamfer allows threading close to the hole bottom. Thread size: 3/8"-24 UNF, tolerance H3 / 2B-3B, 3 flutes
This OSG extension tap is designed for threading #6-32 UNC holes in steel and stainless steel. Its spiral-flute design and bottoming chamfer make it suitable for through-hole or blind-hole applications where chip evacuation is critical
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This OSG extension tap is designed for threading #6-32 UNC holes in steel and stainless steel. Its spiral-flute design and bottoming chamfer make it suitable for through-hole or blind-hole applications where chip evacuation is critical
Spiral-flute extension tap for threading blind holes in steel and stainless steel. Features a #8-32 UNC thread size, H3 / 2B-3B thread class, 3 flutes, and a bottoming chamfer. The spiral-flute design evacuates chips upward, enabling deep-hole tapping and threading close to the hole bottom
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Spiral-flute extension tap for threading blind holes in steel and stainless steel. Features a #8-32 UNC thread size, H3 / 2B-3B thread class, 3 flutes, and a bottoming chamfer. The spiral-flute design evacuates chips upward, enabling deep-hole tapping and threading close to the hole bottom
This spiral-flute extension tap is designed for threading blind holes in steel and stainless steel. The spiral-flute design evacuates chips upward, enabling deep-hole tapping. The bottoming chamfer allows threading close to the hole bottom. Thread size: 1/4"-28 UNF, tolerance H3 / 2B-3B, 3 flutes
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This spiral-flute extension tap is designed for threading blind holes in steel and stainless steel. The spiral-flute design evacuates chips upward, enabling deep-hole tapping. The bottoming chamfer allows threading close to the hole bottom. Thread size: 1/4"-28 UNF, tolerance H3 / 2B-3B, 3 flutes

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Spiral-flute extension tap for threading blind holes in steel and stainless steel. The spiral-flute design evacuates chips upward, and the modified bottoming chamfer allows threading close to the hole bottom. Thread size #10-24 UNC, tolerance H3 / 2B-3B, 3 flutes
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Spiral-flute extension tap for threading blind holes in steel and stainless steel. The spiral-flute design evacuates chips upward, and the modified bottoming chamfer allows threading close to the hole bottom. Thread size #10-24 UNC, tolerance H3 / 2B-3B, 3 flutes
This spiral-flute extension tap is designed for cutting internal threads in deep or hard-to-reach holes in steel and stainless steel. The extended reach and spiral-flute geometry provide efficient chip evacuation, making it suitable for applications where standard taps cannot access the workpiece
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This spiral-flute extension tap is designed for cutting internal threads in deep or hard-to-reach holes in steel and stainless steel. The extended reach and spiral-flute geometry provide efficient chip evacuation, making it suitable for applications where standard taps cannot access the workpiece
This spiral-flute extension tap is designed for threading blind holes in steel and stainless steel. The spiral-flute design evacuates chips upward, while the modified bottoming chamfer allows threading close to the hole bottom. It features a #6-32 UNC thread size, H3 tolerance for 2B or 3B thread classes, and 3 flutes
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This spiral-flute extension tap is designed for threading blind holes in steel and stainless steel. The spiral-flute design evacuates chips upward, while the modified bottoming chamfer allows threading close to the hole bottom. It features a #6-32 UNC thread size, H3 tolerance for 2B or 3B thread classes, and 3 flutes
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This OSG spiral-flute extension tap is designed for threading deep or hard-to-reach holes in steel and stainless steel. It features a #4-40 UNC thread size, H2 / 2B-3B thread limit, 3 flutes, and a modified bottoming chamfer. The extended reach and spiral-flute design facilitate chip evacuation in demanding threading applications
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This OSG spiral-flute extension tap is designed for threading deep or hard-to-reach holes in steel and stainless steel. It features a #4-40 UNC thread size, H2 / 2B-3B thread limit, 3 flutes, and a modified bottoming chamfer. The extended reach and spiral-flute design facilitate chip evacuation in demanding threading applications