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OSG 1/4"-28 UNF General Purpose Spiral-Point Tap - General Purpose Spiral-Point Taps
OSGGeneral Purpose Spiral-Point Taps

OSG 1/4"-28 UNF General Purpose Spiral-Point Tap

OSG General Purpose Spiral-Point Taps.

SKU 3G-OTH-215546

Brand
OSG
Item
1/4"-28 UNF General Purpose Spiral-Point Tap
Category
General Purpose Spiral-Point Taps
Available to Order
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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
2840400

Technical Documents

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

Product Description

OSG General Purpose Spiral-Point Taps.

Frequently Asked Questions

What is the OSG spiral point tap 1/4"-28 UNF used for?

This OSG spiral point tap is used for through-hole threading in metals, pushing chips ahead to prevent clogging. It is ideal for general-purpose tapping in production and maintenance across machining, automotive, and industrial equipment applications.

What are the specifications of the OSG 2840400 tap?

The OSG 2840400 is a spiral point tap with 1/4"-28 UNF thread, H5 tolerance, 3 flutes, and plug chamfer. It is designed for 2B-3B class fit in through holes, providing efficient chip evacuation and consistent thread quality in ferrous and non-ferrous materials.

Where to buy OSG taps in worldwide?

3G Electric supplies OSG taps like the 2840400 to worldwide locations. We handle full logistics, customs clearance, and delivery, ensuring you receive genuine OSG cutting tools for your industrial threading needs, regardless of your region.

How to select the right OSG tap for a threading job?

Select an OSG tap based on thread size (e.g., 1/4"-28 UNF), material type, and hole configuration. Spiral point taps suit through holes; spiral flute taps work for blind holes. Match tolerance (H5) to required class fit (2B-3B) for accurate threads.

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-point 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

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Spiral-point tap designed for through-hole threading. Pushes chips forward to reduce congestion and breakage. Suitable for ferrous and non-ferrous materials in general manufacturing applications
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Spiral-point tap designed for through-hole threading. Pushes chips forward to reduce congestion and breakage. Suitable for ferrous and non-ferrous materials in general manufacturing applications
Spiral-point tap designed for through-hole threading in metals. The spiral point pushes chips forward, preventing clogging and ensuring clean threads. Suitable for general machining applications requiring efficient chip evacuation
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Spiral-point tap designed for through-hole threading in metals. The spiral point pushes chips forward, preventing clogging and ensuring clean threads. Suitable for general machining applications requiring efficient chip evacuation
Spiral-point tap designed for through-hole threading in metals and alloys. Features a 1/4"-28 UNF thread size, H4 tolerance for 2B-3B class threads, 3 flutes, and a plug chamfer. The spiral point design pushes chips forward to prevent clogging and ensure clean threads
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Spiral-point tap designed for through-hole threading in metals and alloys. Features a 1/4"-28 UNF thread size, H4 tolerance for 2B-3B class threads, 3 flutes, and a plug chamfer. The spiral point design pushes chips forward to prevent clogging and ensure clean threads
OSG Spiral Point Tap: 1/4"-28 UNF, H3 / 2B-3B, 3 Flute, Plug Chamfer (MPN 2830400)
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OSG Spiral Point Tap: 1/4"-28 UNF, H3 / 2B-3B, 3 Flute, Plug Chamfer (MPN 2830400)
General purpose spiral-point tap with 5/8"-18 UNF thread, H5 tolerance, and 3-flute design. Plug chamfer configuration pushes chips forward during through-hole threading, reducing clogging. Suitable for 2B-3B class fit in ferrous and non-ferrous materials
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General purpose spiral-point tap with 5/8"-18 UNF thread, H5 tolerance, and 3-flute design. Plug chamfer configuration pushes chips forward during through-hole threading, reducing clogging. Suitable for 2B-3B class fit in ferrous and non-ferrous materials
This spiral-point tap is designed for through-hole threading in general-purpose industrial applications. Its geometry pushes chips forward to reduce clogging and enable faster cycles in materials such as steel, aluminum, and cast iron. Thread size: 7/8"-14 UNF, tolerance class H4 / 2B-3B, 3 flutes, plug chamfer
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This spiral-point tap is designed for through-hole threading in general-purpose industrial applications. Its geometry pushes chips forward to reduce clogging and enable faster cycles in materials such as steel, aluminum, and cast iron. Thread size: 7/8"-14 UNF, tolerance class H4 / 2B-3B, 3 flutes, plug chamfer

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