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OSG Spiral Flute Tap: 5/16"-24 UNF, H4 / 2B-3B, 3 Flute - Spiral-Flute Taps for Steel & Stainless Steel
OSGSpiral-Flute Taps for Steel & Stainless Steel

OSG Spiral Flute Tap: 5/16"-24 UNF, H4 / 2B-3B, 3 Flute

SKU 3G-OTH-218916

Brand
OSG
Item
Spiral Flute Tap: 5/16"-24 UNF, H4 / 2B-3B, 3 Flute
Category
Spiral-Flute Taps for Steel & Stainless Steel
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Technical Specifications

OSG
Manufacturer Part Number
0137801
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OSG Products
3G Electric (S) Pte. Ltd. — Singapore

Frequently Asked Questions

What is the OSG Spiral Flute Tap 5/16"-24 UNF used for?

This OSG spiral flute tap is designed for threading blind holes in steel and stainless steel. Its spiral flute design evacuates chips upward, making it ideal for bottoming chamfer applications where chips must not pack at the hole bottom.

What are the specifications of the OSG Spiral Flute Tap 5/16"-24 UNF?

The tap has a 5/16"-24 UNF thread size, H4 / 2B-3B tolerance, 3 flutes, and a bottoming chamfer. The OSG part number is 0137801. It is designed for threading steel and stainless steel in blind-hole applications.

Where to buy the OSG Spiral Flute Tap 5/16"-24 UNF worldwide?

3G Electric supplies the OSG spiral flute tap 5/16"-24 UNF (MPN 0137801) worldwide. We handle full logistics, customs clearance, and delivery to your location. Contact us for availability and lead time.

How to select the correct OSG spiral flute tap for steel?

For steel and stainless steel blind holes, choose a spiral flute tap with a bottoming chamfer like this OSG model. Ensure thread size (5/16"-24 UNF) and tolerance class (H4 / 2B-3B) match your application. Use proper cutting fluid and speed for material hardness.

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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