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OSG 1/4"-28 UNF Oversized Spiral-Point Tap - Oversized Spiral-Point Taps
OSGOversized Spiral-Point Taps

OSG 1/4"-28 UNF Oversized Spiral-Point Tap

The OSG Spiral Point Tap (1/4"-28 UNF) is an oversized spiral-point tap, model H11 with a plug chamfer and TiCN-coated vanadium high-speed steel construction. It features 3 flutes and is identified by manufacturer…

SKU 3G-OTH-251271

Brand
OSG
Item
1/4"-28 UNF Oversized Spiral-Point Tap
Part Number
2840708
Category
Oversized Spiral-Point Taps
Available to Order
Also known as:2840708OSG
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Technical Specifications

OSG
Manufacturer Part Number
2840708
Type
H11, Plug Chamfer, TiCN Coated Vanadium High Speed Steel
Flute
3

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

Product Description

The OSG Spiral Point Tap (1/4"-28 UNF) is an oversized spiral-point tap, model H11 with a plug chamfer and TiCN-coated vanadium high-speed steel construction. It features 3 flutes and is identified by manufacturer part number 2840708.

Frequently Asked Questions

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

This OSG spiral point tap is designed for threading blind holes in production environments. Its TiCN coating and vanadium high-speed steel construction suit ferrous materials, stainless steel, and high-tensile alloys. The plug chamfer and 3-flute geometry enable efficient chip evacuation, making it ideal for automotive, aerospace, and general manufacturing applications.

What are the specifications of the OSG spiral point tap MPN 2840708?

The OSG spiral point tap MPN 2840708 has a thread size of 1/4"-28 UNF, H11 tolerance, 3 flutes, and a plug chamfer. It is made from TiCN-coated vanadium high-speed steel. This oversized tap is designed for precision threading in demanding materials. 3G Electric supplies this OSG tap globally.

Where to buy OSG spiral point taps worldwide?

3G Electric supplies OSG spiral point taps, including MPN 2840708, to customers worldwide. As a global industrial equipment distributor since 1990, we handle full logistics, customs clearance, and delivery to your location. Contact us for availability and lead time on this OSG tap.

How to select the correct OSG spiral point tap for my application?

Select an OSG spiral point tap based on thread size, tolerance, and material. For 1/4"-28 UNF threads in hard materials, the TiCN-coated vanadium HSS tap with H11 tolerance is suitable. Ensure the tap matches your hole type—plug chamfer for blind holes. 3G Electric can help you source the right OSG tap for your needs.

Used in

Common applications for OSG
Aerospace — OSG STI taps for installing helical wire thread inserts in aluminum components
Automotive — OSG spiral-point taps for through-hole threading in engine blocks and transmission cases
General machining — OSG spiral-flute taps for blind-hole threading in steel and stainless steel parts
Heavy equipment repair — OSG thread-forming taps for creating threads in ductile iron and steel castings
Precision manufacturing — OSG solid carbide chucking reamers for finishing holes in hydraulic manifolds
Die and mold — OSG coolant-through solid carbide drills for deep-hole drilling in tool steels
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OSG Products

3G Electric supplies OSG oversized 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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