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OSG Straight Flute Tap: 1/2"-20 UNF, H3 / 2B-3B, 3 Flute, Plug Chamfer - General Purpose Hand Taps
OSGGeneral Purpose Hand Taps

OSG Straight Flute Tap: 1/2"-20 UNF, H3 / 2B-3B, 3 Flute, Plug Chamfer

The OSG Straight Flute Tap (MPN 1172800) is a 1/2"-20 UNF general-purpose hand tap made from high-speed steel with a plug chamfer. It features 3 flutes and is rated H3 / 2B-3B, designed for threading applications…

SKU 3G-OTH-221747

Brand
OSG
Item
Straight Flute Tap: 1/2"-20 UNF, H3 / 2B-3B, 3 Flute, Plug Chamfer
Category
General Purpose Hand Taps
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Technical Specifications

OSG
Manufacturer Part Number
1172800
Type
H3 / 2B-3B, Plug Chamfer, High Speed Steel
Flute
3

Technical Documents

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

Product Description

The OSG Straight Flute Tap (MPN 1172800) is a 1/2"-20 UNF general-purpose hand tap made from high-speed steel with a plug chamfer. It features 3 flutes and is rated H3 / 2B-3B, designed for threading applications across 14 industrial departments — and we supply far more than is listed. Our specialist depth in combustion, pumps and controls serves as a trust anchor, but we are a curated partner that gets you the right answer, not an infinite warehouse.

Frequently Asked Questions

What is OSG Straight Flute Tap 1172800 used for?

The OSG Straight Flute Tap 1172800 is a general-purpose hand tap designed for cutting internal threads in metal. It is commonly used in automotive, aerospace, and general manufacturing for creating UNF threads in through or blind holes, with a plug chamfer for versatile entry.

What are the specifications of OSG Straight Flute Tap 1172800?

The OSG Straight Flute Tap 1172800 has a thread size of 1/2"-20 UNF, with H3 tolerance for 2B-3B class fit. It features 3 flutes, a plug chamfer, and is made from high-speed steel. The manufacturer part number is 1172800, and it is designed for general-purpose hand tapping.

Where to buy OSG Straight Flute Tap 1172800 worldwide?

You can source the OSG Straight Flute Tap 1172800 through 3G Electric, a global industrial equipment distributor. We handle full logistics, customs clearance, and delivery to worldwide destinations, ensuring reliable supply for your manufacturing needs.

How to select the right OSG straight flute tap for UNF threads?

To select the correct OSG straight flute tap, match the thread size (e.g., 1/2"-20 UNF) and class fit (e.g., H3 for 2B-3B). Consider material and hole type: plug chamfer suits blind holes, while taper chamfer is for through holes. OSG taps are precision-ground for consistent thread quality.

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 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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Cross-referenced by specification & description
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OSG Straight Flute Tap: 3/8"-24 UNF, H2 / 2B-3B, 4 Flute, Plug Chamfer, TiCN Coated High Speed Steel (MPN 1111608)
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OSG Straight Flute Tap: 7/8"-14 UNF, H2 / 2B-3B, 4 Flute, Plug Chamfer, High Speed Steel (MPN 1115800)

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