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OSG Spiral Flute Tap: 1/4"-28 UNF, H5 / 2B-3B, 3 Flute - General Purpose Spiral-Flute Taps
OSGGeneral Purpose Spiral-Flute Taps

OSG Spiral Flute Tap: 1/4"-28 UNF, H5 / 2B-3B, 3 Flute

The OSG Spiral Flute Tap (1/4"-28 UNF) is a general-purpose spiral-flute tap with an H5 / 2B-3B tolerance, 3 flutes, and a modified bottoming chamfer (MPN 2940408). 3G Electric interprets demand and sources this…

SKU 3G-OTH-230477

Brand
OSG
Item
Spiral Flute Tap: 1/4"-28 UNF, H5 / 2B-3B, 3 Flute
Category
General Purpose Spiral-Flute Taps
Available to Order
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Technical specs
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Local availability & support — the Philippines

Delivery
5–8 business days door-to-door; Bureau of Customs clearance typically 2–4 business days.
Payment
Invoicing in PHP or USD. Bank transfer and corporate PO accepted.
Ships to
Manila, Quezon City, Cebu, Davao, Batangas

Technical Specifications

OSG
Manufacturer Part Number
2940408
Type
H5 / 2B-3B, Modified Bottoming Chamfer
Flute
3

Technical Documents

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

Product Description

The OSG Spiral Flute Tap (1/4"-28 UNF) is a general-purpose spiral-flute tap with an H5 / 2B-3B tolerance, 3 flutes, and a modified bottoming chamfer (MPN 2940408). 3G Electric interprets demand and sources this genuine OSG tap across 14 industrial departments — with specialist depth in combustion, pumps and controls — ensuring you get the right answer, not just a catalog.

Supplied to the Philippines — compatible with 60 Hz installations. DHL Express delivery to Manila, Quezon City, Cebu, customs and duties handled door-to-door.

Frequently Asked Questions

What is the OSG spiral flute tap 2940408 used for?

The OSG spiral flute tap 2940408 is used for threading blind holes in materials such as steel and aluminum. Its spiral flute design lifts chips upward, preventing clogging and ensuring clean threads. It is ideal for general-purpose tapping in manufacturing and maintenance applications.

What are the specifications of the OSG spiral flute tap 2940408?

The OSG spiral flute tap 2940408 has a thread size of 1/4"-28 UNF, with an H5 tolerance class for 2B-3B fit. It features 3 flutes and a modified bottoming chamfer. The manufacturer part number is 2940408. This tap is designed for precise threading in blind holes.

Where to buy the OSG spiral flute tap 2940408 worldwide?

You can source the OSG spiral flute tap 2940408 through 3G Electric, a global industrial equipment distributor. We handle full logistics, customs clearance, and delivery to worldwide destinations. Contact us for availability and lead time; we provide reliable sourcing for this and other OSG taps.

How to select the correct OSG spiral flute tap for blind holes?

To select the correct OSG spiral flute tap for blind holes, match the thread size (e.g., 1/4"-28 UNF) and tolerance class (H5 for 2B-3B fit) to your application. Choose a modified bottoming chamfer for threading close to the hole bottom. OSG taps are designed for efficient chip evacuation in blind-hole tapping.

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: 1/4"-28 UNF, H5 / 2B-3B, 3 Flute, Modified Bottoming Chamfer (MPN 2940400)
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OSG Spiral Flute Tap: 1/4"-28 UNF, H5 / 2B-3B, 3 Flute, Modified Bottoming Chamfer (MPN 2940400)
OSG Spiral Flute Tap: 5/16"-24 UNF, H5 / 2B-3B, 3 Flute, Modified Bottoming Chamfer (MPN 2941200)
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OSG Spiral Flute Tap: 5/16"-24 UNF, H5 / 2B-3B, 3 Flute, Modified Bottoming Chamfer (MPN 2941200)
OSG Spiral Flute Tap: 5/16"-24 UNF, H5 / 2B-3B, 3 Flute, Modified Bottoming Chamfer (MPN 2941208)
OSG
OSG Spiral Flute Tap: 5/16"-24 UNF, H5 / 2B-3B, 3 Flute, Modified Bottoming Chamfer (MPN 2941208)
OSG Spiral Flute Tap: 5/16"-18 UNC, H5 / 2B-3B, 3 Flute, Modified Bottoming Chamfer (MPN 2940808)
OSG
OSG Spiral Flute Tap: 5/16"-18 UNC, H5 / 2B-3B, 3 Flute, Modified Bottoming Chamfer (MPN 2940808)
OSG Spiral Flute Tap: 5/16"-18 UNC, H5 / 2B-3B, 3 Flute, Modified Bottoming Chamfer (MPN 2940800)
OSG
OSG Spiral Flute Tap: 5/16"-18 UNC, H5 / 2B-3B, 3 Flute, Modified Bottoming Chamfer (MPN 2940800)
OSG Spiral Flute Tap: 1/4"-20 UNC, H5 / 2B-3B, 3 Flute, Modified Bottoming Chamfer (MPN 2940008)
OSG
OSG Spiral Flute Tap: 1/4"-20 UNC, H5 / 2B-3B, 3 Flute, Modified Bottoming Chamfer (MPN 2940008)

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