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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
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Local availability & support — Singapore

Local office
20 Woodlands Link #09-05, Singapore 738733
Phone
+65 8878 8355
Delivery
Same-day or next-business-day delivery within Singapore for in-stock items; 7–14 days for factory-order parts from Europe.
Payment
Invoicing in SGD. PayNow, bank transfer, and corporate PO accepted.
Ships to
Singapore

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.

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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This OSG spiral-flute tap is designed for threading blind holes in materials such as steel and aluminum. The spiral flute design evacuates chips upward, preventing clogging and ensuring clean threads. It features a modified bottoming chamfer for threading close to the bottom of the hole. With an H5 tolerance class for 2B-3B fit, it is suitable for general manufacturing applications
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This OSG spiral-flute tap is designed for threading blind holes in materials such as steel and aluminum. The spiral flute design evacuates chips upward, preventing clogging and ensuring clean threads. It features a modified bottoming chamfer for threading close to the bottom of the hole. With an H5 tolerance class for 2B-3B fit, it is suitable for general manufacturing applications
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General purpose spiral-flute tap for threading blind holes in ferrous and non-ferrous materials. Features a modified bottoming chamfer for threading close to the bottom of holes. Spiral flute design evacuates chips upward, preventing clogging. Thread size 5/16"-18 UNC, tolerance H5 for 2B-3B fit, 3 flutes
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