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OSG Spiral Flute Tap: 7/16"-14 UNC, H3 / 2B-3B, 3 Flute - Spiral-Flute Taps for Steel & Stainless Steel
OSGSpiral-Flute Taps for Steel & Stainless Steel

OSG Spiral Flute Tap: 7/16"-14 UNC, H3 / 2B-3B, 3 Flute

OSG Spiral-Flute Taps for Steel & Stainless Steel.

SKU 3G-OTH-218561

Brand
OSG
Item
Spiral Flute Tap: 7/16"-14 UNC, H3 / 2B-3B, 3 Flute
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
0138301

Technical Documents

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

Product Description

OSG Spiral-Flute Taps for Steel & Stainless Steel.

Frequently Asked Questions

What is the OSG spiral flute tap 0138301 used for?

The OSG spiral flute tap 0138301 is designed for threading blind holes in steel and stainless steel. Its spiral flute design evacuates chips upward, preventing clogging and ensuring clean threads. It is commonly used in automotive, aerospace, and general machining applications where reliable thread quality is critical.

What are the specifications of the OSG 0138301 tap?

The OSG 0138301 is a 7/16"-14 UNC spiral flute tap with a H3 / 2B-3B tolerance class. It has 3 flutes and a bottoming chamfer, making it suitable for threading to the bottom of blind holes. It is manufactured by OSG, a leading cutting tool brand, and is intended for steel and stainless steel workpieces.

Where to buy OSG taps like 0138301 worldwide?

3G Electric supplies OSG taps including model 0138301 to customers worldwide. As a global industrial solutions provider, we handle full logistics, customs clearance, and delivery to your location. Contact us for pricing and lead time on this spiral flute tap for steel and stainless steel threading.

How to select the correct OSG tap for blind holes?

For blind holes in steel or stainless steel, choose a spiral flute tap like the OSG 0138301 with a bottoming chamfer. The spiral flutes push chips out of the hole, preventing breakage. Ensure the tap size matches your thread specification (e.g., 7/16"-14 UNC) and tolerance class (H3 / 2B-3B) for proper fit.

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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