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OSG Straight Flute Tap: 1/4"-28 UNF, 2B+, 4 Flute, Plug Chamfer - Oversized Hand Taps
OSGOversized Hand Taps

OSG Straight Flute Tap: 1/4"-28 UNF, 2B+, 4 Flute, Plug Chamfer

The OSG Straight Flute Tap (MPN 1590300) is an oversized hand tap with a 1/4"-28 UNF thread, designed as a 2B+ tolerance, plug chamfer, high-speed steel tool with 4 flutes. 3G Electric interprets this demand and…

SKU 3G-OTH-272782

Brand
OSG
Item
Straight Flute Tap: 1/4"-28 UNF, 2B+, 4 Flute, Plug Chamfer
Category
Oversized Hand Taps
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Technical Specifications

OSG
Manufacturer Part Number
1590300
Type
2B+, Plug Chamfer, High Speed Steel
Flute
4
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OSG Products
3G Electric (S) Pte. Ltd. — Singapore

Product Description

The OSG Straight Flute Tap (MPN 1590300) is an oversized hand tap with a 1/4"-28 UNF thread, designed as a 2B+ tolerance, plug chamfer, high-speed steel tool with 4 flutes. 3G Electric interprets this demand and sources the genuine OSG product, providing it across 14 industrial departments—with specialist depth in combustion, pumps, and controls as an authorized distributor for brands like FBR, Interpump, and others.

Frequently Asked Questions

What is the OSG Straight Flute Tap 1/4"-28 UNF used for?

This OSG tap is used for threading internal threads in metal components, specifically for 1/4"-28 UNF applications. It is ideal for precision machining in automotive, aerospace, and general manufacturing where tight tolerances and clean thread profiles are required.

What are the specifications of the OSG Straight Flute Tap 1/4"-28 UNF?

This OSG tap has a 1/4"-28 UNF thread size, 2B+ tolerance, 4 flutes, plug chamfer, and is made from high-speed steel. The manufacturer part number is 1590300. It is an oversized hand tap designed for creating threads in ferrous and non-ferrous materials.

Where to buy the OSG Straight Flute Tap 1/4"-28 UNF worldwide?

You can source the OSG Straight Flute Tap 1/4"-28 UNF from 3G Electric, a global industrial equipment distributor. We handle full logistics, customs clearance, and delivery to worldwide destinations, ensuring your order arrives reliably. Contact us for availability and lead times.

How to select the correct OSG tap for UNF threads?

To select the correct OSG tap, match the thread size (e.g., 1/4"-28 UNF) and tolerance class (e.g., 2B+) to your application. Consider material type and tap style—straight flute taps are suitable for through holes. OSG high-speed steel taps offer durability for general-purpose threading.

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 oversized hand taps. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.

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