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OSG Oversized Hand Tap 1/4-20 UNC 2B+ Plug Chamfer Black Oxide - Oversized Hand Taps
OSGOversized Hand Taps

OSG Oversized Hand Tap 1/4-20 UNC 2B+ Plug Chamfer Black Oxide

The OSG Straight Flute Tap (1/4"-20 UNC) is an oversized hand tap with a 2B+ tolerance, plug chamfer, and black oxide high-speed steel construction. It features 4 flutes (MPN 1590101). 3G Electric interprets your…

SKU 3G-OTH-272761

Brand
OSG
Item
Oversized Hand Tap 1/4-20 UNC 2B+ Plug Chamfer Black Oxide
Part Number
1590101
Category
Oversized Hand Taps
Available to Order
Also known as:1590101OSG
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Worldwide DHL shipping from Singapore; 7–14 business days door-to-door for most destinations.
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Invoicing in USD. Bank transfer (SWIFT) and corporate PO accepted.

Technical Specifications

OSG
Manufacturer Part Number
1590101
Type
2B+, Plug Chamfer, Black Oxide High Speed Steel
Flute
4

Technical Documents

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

Product Description

The OSG Straight Flute Tap (1/4"-20 UNC) is an oversized hand tap with a 2B+ tolerance, plug chamfer, and black oxide high-speed steel construction. It features 4 flutes (MPN 1590101). 3G Electric interprets your demand for this OEM-specified tool and delivers it across 14 industrial departments, with specialist depth in combustion, pumps, and controls as a trust anchor.

Frequently Asked Questions

What is the OSG Straight Flute Tap 1590101 used for?

The OSG Straight Flute Tap 1590101 is used for cutting internal threads in metal components. It is designed for through-hole or blind-hole tapping in materials such as steel, stainless steel, and aluminum. The 4-flute design and plug chamfer make it suitable for general-purpose threading in manufacturing and maintenance applications.

What are the specifications of the OSG Straight Flute Tap 1590101?

The OSG Straight Flute Tap 1590101 has a thread size of 1/4"-20 UNC, a 2B+ tolerance class, 4 flutes, and a plug chamfer. It is made from black oxide high-speed steel (HSS) for wear resistance and reduced friction. The manufacturer part number is 1590101.

Where to buy the OSG Straight Flute Tap 1590101 worldwide?

You can source the OSG Straight Flute Tap 1590101 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 supply this tap to procurement teams and engineers globally.

How to select the correct OSG Straight Flute Tap for UNC threads?

To select the correct OSG Straight Flute Tap for UNC threads, match the thread size (e.g., 1/4"-20 UNC) and tolerance class (e.g., 2B+) to your application. Consider material hardness: black oxide HSS taps suit general-purpose steel. For blind holes, use a plug chamfer; for through-holes, a bottoming chamfer may be preferred. Always verify the tap's flute count and coating for chip evacuation.

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
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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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