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
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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.
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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.















