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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

OSG General Purpose Spiral-Flute Taps.

SKU 3G-OTH-230493

Brand
OSG
Item
Spiral Flute Tap: #4-40 UNC, H4 / 2B-3B, 3 Flute
Category
General Purpose Spiral-Flute Taps
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Invoicing in USD. Bank transfer (SWIFT) and corporate PO accepted.

Technical Specifications

OSG
Manufacturer Part Number
2916500

Technical Documents

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

Product Description

OSG General Purpose Spiral-Flute Taps.

Frequently Asked Questions

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

This OSG spiral flute tap is designed for threading blind holes in ferrous and non-ferrous materials. Its spiral flute design evacuates chips upward, making it ideal for general-purpose tapping in machining, automotive, and industrial maintenance applications.

What are the specifications of the OSG 2916500 tap?

The OSG 2916500 is a #4-40 UNC spiral flute tap with a H4 / 2B-3B tolerance class, 3 flutes, and a modified bottoming chamfer. It is designed for threading blind holes and is suitable for general-purpose tapping in a range of materials.

Where to buy OSG taps in worldwide?

3G Electric supplies OSG taps like the 2916500 to customers worldwide. We handle full logistics, customs clearance, and delivery to your facility. Contact us for pricing and lead time on this and other OSG cutting tools.

How to select the right tap for a blind hole?

For blind holes, choose a spiral flute tap like this OSG #4-40 UNC, which pushes chips out of the hole. Ensure the chamfer type (modified bottoming) matches your thread depth requirements. Always match tap tolerance (H4 / 2B-3B) to your desired thread class.

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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Compatible alternatives & equivalents

Cross-referenced by specification & description
OSG Spiral Flute Tap: #4-40 UNC, H3 / 2B-3B, 3 Flute, Modified Bottoming Chamfer (MPN 2911408)
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OSG Spiral Flute Tap: #6-32 UNC, H3 / 2B-3B, 3 Flute, Modified Bottoming Chamfer (MPN 2912408)
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OSG Spiral Flute Tap: #10-24 UNC, H3 / 2B-3B, 3 Flute, Modified Bottoming Chamfer (MPN 2913408)
OSG Spiral Flute Tap: #8-32 UNC, H3 / 2B-3B, 3 Flute, Modified Bottoming Chamfer (MPN 2912808)
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OSG Spiral Flute Tap: #8-32 UNC, H3 / 2B-3B, 3 Flute, Modified Bottoming Chamfer (MPN 2912808)
OSG Spiral Flute Tap: #10-32 UNF, H3 / 2B-3B, 3 Flute, Modified Bottoming Chamfer (MPN 2913808)
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OSG Spiral Flute Tap: #10-32 UNF, H3 / 2B-3B, 3 Flute, Modified Bottoming Chamfer (MPN 2913808)
OSG Spiral Flute Tap: #8-32 UNC, H2 / 2B-3B, 3 Flute, Modified Bottoming Chamfer (MPN 2907808)
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OSG Spiral Flute Tap: #8-32 UNC, H2 / 2B-3B, 3 Flute, Modified Bottoming Chamfer (MPN 2907808)

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