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

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

The OSG Spiral Flute Tap (#4-40 UNC, MPN 1650508908) is a spiral-flute tap for steel and stainless steel, featuring a bottoming chamfer, 2 flutes, and V coated powdered metal construction with H2 / 2B-3B tolerance…

SKU 3G-OTH-218822

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

OSG
Manufacturer Part Number
1650508908
Type
H2 / 2B-3B, Bottoming Chamfer, V Coated Powdered Metal
Flute
2
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OSG Products
3G Electric (S) Pte. Ltd. — Singapore

Product Description

The OSG Spiral Flute Tap (#4-40 UNC, MPN 1650508908) is a spiral-flute tap for steel and stainless steel, featuring a bottoming chamfer, 2 flutes, and V coated powdered metal construction with H2 / 2B-3B tolerance class. 3G Electric interprets your demand, sources this genuine OSG tap, and supports your threading operations across 14 industrial departments — with specialist depth in combustion, pumps, and controls as an authorised distributor.

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 evacuates chips upward, preventing clogging. The V coated powdered metal construction provides wear resistance for production tapping. It is commonly used in automotive, aerospace, and general manufacturing applications.

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

This OSG tap has a #4-40 UNC thread size, H2 / 2B-3B tolerance, 2 flutes, and a bottoming chamfer. It is made of V coated powdered metal. The manufacturer part number is 1650508908. It is designed for tapping blind holes in steel and stainless steel materials.

Where to buy OSG spiral flute taps in worldwide?

You can source OSG spiral flute taps worldwide through 3G Electric, a global industrial equipment distributor. We handle full logistics, customs clearance, and delivery to your location. Contact us for availability and lead time. We supply genuine OSG cutting tools for manufacturing operations globally.

How to select the correct OSG tap for steel tapping?

Select an OSG tap based on thread size, hole type, and material. For blind holes in steel, use a spiral flute tap with bottoming chamfer. The #4-40 UNC with H2 tolerance suits general production. Ensure the tap coating matches the material; V coated powdered metal works for steel and stainless steel. Consult OSG technical data for feed and speed recommendations.

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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