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OSG Spiral Flute Tap: #4-40 UNC, H2 / 2B-3B, 3 Flute - Spiral-Flute Taps for Steel & Stainless Steel
OSGSpiral-Flute Taps for Steel & Stainless Steel

OSG Spiral Flute Tap: #4-40 UNC, H2 / 2B-3B, 3 Flute

SKU 3G-OTH-218588

Brand
OSG
Item
Spiral Flute Tap: #4-40 UNC, H2 / 2B-3B, 3 Flute
Category
Spiral-Flute Taps for Steel & Stainless Steel
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Technical Specifications

OSG
Manufacturer Part Number
0135608
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OSG Products
3G Electric (S) Pte. Ltd. — Singapore

Frequently Asked Questions

What is the OSG spiral flute tap #4-40 UNC used for?

The OSG spiral flute tap #4-40 UNC is designed for threading blind holes in steel and stainless steel. Its spiral flute design lifts chips upward, preventing clogging in deep holes. It is commonly used in automotive, aerospace, and general manufacturing for creating precise internal threads in ferrous materials.

What are the specifications of the OSG spiral flute tap #4-40 UNC?

The OSG spiral flute tap #4-40 UNC has a thread size of #4-40 UNC, a H2 / 2B-3B tolerance class, 3 flutes, and a bottoming chamfer. The manufacturer part number is 0135608. It is designed for threading steel and stainless steel, ensuring accurate thread fit and chip evacuation.

Where to buy the OSG spiral flute tap #4-40 UNC worldwide?

You can source the OSG spiral flute tap #4-40 UNC (MPN 0135608) through 3G Electric, a global industrial equipment distributor. We handle full logistics, customs clearance, and delivery to worldwide locations. Contact us for availability and lead time; we supply genuine OSG taps for your threading applications.

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

To select the correct OSG spiral flute tap for steel, match the thread size (e.g., #4-40 UNC), chamfer type (bottoming for blind holes), and tolerance class (H2 / 2B-3B) to your application. Ensure the tap is rated for steel and stainless steel. OSG taps are engineered for chip evacuation and thread accuracy in ferrous materials.

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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