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OSG Spiral Flute Tap: 1/4"-28 UNF, H4 / 2B-3B, 3 Flute - General Purpose Spiral-Flute Taps
OSGGeneral Purpose Spiral-Flute Taps

OSG Spiral Flute Tap: 1/4"-28 UNF, H4 / 2B-3B, 3 Flute

The OSG Spiral Flute Tap (1/4"-28 UNF, MPN 2935401) is a general-purpose spiral-flute tap with a modified bottoming chamfer, 3 flutes, and H4 / 2B-3B tolerance class. 3G Electric sources this genuine OSG tool as part…

SKU 3G-OTH-230182

Brand
OSG
Item
Spiral Flute Tap: 1/4"-28 UNF, H4 / 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
2935401
Type
H4 / 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, MPN 2935401) is a general-purpose spiral-flute tap with a modified bottoming chamfer, 3 flutes, and H4 / 2B-3B tolerance class. 3G Electric sources this genuine OSG tool as part of our industrial supply across 14 departments, with specialist expertise in combustion, pumps, and controls.

Frequently Asked Questions

What is the OSG spiral flute tap 2935401 used for?

The OSG spiral flute tap 2935401 is used for threading blind holes in materials such as steel and aluminum. Its spiral flute design evacuates chips upward, preventing clogging. The modified bottoming chamfer allows threading close to the hole bottom, making it ideal for general-purpose tapping in manufacturing and maintenance applications.

What are the specifications of the OSG tap 2935401?

The OSG tap 2935401 has a 1/4"-28 UNF thread size, H4 / 2B-3B tolerance, 3 flutes, and a modified bottoming chamfer. It is a general-purpose spiral flute tap designed for blind hole threading. The H4 tolerance ensures precise fit for class 2B and 3B threads in unified fine thread applications.

Where to buy the OSG spiral flute tap 2935401 worldwide?

You can source the OSG spiral flute tap 2935401 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 (H4 / 2B-3B) to your application. Choose a modified bottoming chamfer for threading near the hole bottom. Ensure the tap material suits your workpiece—OSG taps are available for steel, aluminum, and other materials.

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 spiral-flute tap is designed for threading blind holes in a variety of materials. Its spiral flute design evacuates chips upward, preventing clogging and ensuring clean threads. The modified bottoming chamfer allows threading close to the bottom of the hole. Suitable for general manufacturing applications requiring precise internal threading
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This spiral-flute tap is designed for threading blind holes in a variety of materials. Its spiral flute design evacuates chips upward, preventing clogging and ensuring clean threads. The modified bottoming chamfer allows threading close to the bottom of the hole. Suitable for general manufacturing applications requiring precise internal threading
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This spiral-flute tap is designed for threading blind holes in materials such as steel and stainless steel. The spiral flute lifts chips upward, preventing clogging and ensuring clean threads. It features a modified bottoming chamfer for threading close to the bottom of blind holes. Suitable for general-purpose tapping in manufacturing and maintenance applications
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This spiral-flute tap is designed for threading blind holes in materials such as steel and stainless steel. The spiral flute design evacuates chips upward, preventing clogging. The modified bottoming chamfer allows threading close to the bottom of the hole. Suitable for general manufacturing applications
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This spiral-flute tap is designed for threading blind holes in materials such as steel and stainless steel. The spiral flute design evacuates chips upward, preventing clogging. The modified bottoming chamfer allows threading close to the bottom of the hole. Suitable for general manufacturing applications

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