OSG Straight Flute Tap: 1/2"-20 UNF, H3 / 2B-3B, 4 Flute, Plug Chamfer, LH
The OSG Straight Flute Tap (MPN 1661900) is a 1/2"-20 UNF left-hand thread tap, type H3 / 2B-3B with a plug chamfer, made from high-speed steel and featuring 4 flutes. 3G Electric sources this genuine industrial…
SKU 3G-OTH-265153
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Product Description
The OSG Straight Flute Tap (MPN 1661900) is a 1/2"-20 UNF left-hand thread tap, type H3 / 2B-3B with a plug chamfer, made from high-speed steel and featuring 4 flutes. 3G Electric sources this genuine industrial threading tool as part of our broader capability to interpret demand and deliver 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 1/2"-20 UNF used for?
This OSG left-hand tap is used for cutting internal UNF threads in through or blind holes. It is ideal for automotive, aerospace, and general manufacturing applications requiring precise thread forming in ferrous and non-ferrous materials.
What are the specifications of the OSG Straight Flute Tap 1/2"-20 UNF?
This tap has a 1/2"-20 UNF thread size, H3 / 2B-3B tolerance, 4 flutes, plug chamfer, left-hand (LH) spiral, and is made of high-speed steel. The manufacturer part number is 1661900.
Where to buy OSG Straight Flute Tap 1/2"-20 UNF worldwide?
You can source the OSG Straight Flute Tap 1/2"-20 UNF (MPN 1661900) from 3G Electric. We handle full logistics, customs clearance, and delivery to worldwide destinations as a global industrial equipment supplier.
How to select the correct OSG Straight Flute Tap for UNF threads?
Select based on thread size (1/2"-20 UNF), tolerance class (H3 for 2B-3B fit), flute count (4 for balanced chip evacuation), chamfer type (plug for general use), and hand direction (LH for left-hand threads). OSG taps are precision-ground for consistent performance.
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Common applications for OSGOSG Products
3G Electric supplies OSG left-hand thread taps. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.
