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OSG Spiral Flute Tap: #4-40 UNC, H4 / 2B-3B, 3 Flute - General Purpose Spiral-Flute Taps
OSGGeneral Purpose Spiral-Flute Taps

OSG Spiral Flute Tap: #4-40 UNC, H4 / 2B-3B, 3 Flute

SKU 3G-OTH-231171

Brand
OSG
Item
Spiral Flute Tap: #4-40 UNC, H4 / 2B-3B, 3 Flute
Category
General Purpose Spiral-Flute Taps
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Technical Specifications

OSG
Manufacturer Part Number
2916501
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OSG Products
3G Electric (S) Pte. Ltd. — Singapore

Frequently Asked Questions

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

OSG spiral flute taps are designed for threading blind holes in materials like steel and aluminum. The #4-40 UNC size with modified bottoming chamfer allows threading close to the hole bottom, making it ideal for automotive and general manufacturing applications.

What are the specifications of OSG tap 2916501?

The OSG tap 2916501 is a #4-40 UNC spiral flute tap with H4 / 2B-3B tolerance, 3 flutes, and a modified bottoming chamfer. It is designed for general purpose threading in blind holes, providing chip evacuation and thread accuracy.

Where to buy OSG 2916501 tap worldwide?

3G Electric supplies OSG 2916501 spiral flute taps worldwide. As a global industrial solutions provider, we handle logistics, customs, and delivery to your location. Contact us for pricing and lead time on this precision threading tool.

How to select the right OSG tap for blind holes?

For blind holes, choose a spiral flute tap like OSG #4-40 UNC to pull chips upward. Ensure the chamfer type (modified bottoming) matches your thread depth requirement. Match tap tolerance (H4 / 2B-3B) to your desired thread class 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 general purpose spiral-flute taps. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.

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