OSG Spiral Flute Tap: 1/2"-20 UNF, H7 / 2B-3B, 3 Flute
The OSG Spiral Flute Tap (1/2"-20 UNF) is a general-purpose spiral-flute tap with a modified bottoming chamfer, 3 flutes, and H7 / 2B-3B tolerance class (MPN 2942908). 3G Electric interprets customer demand and…
SKU 3G-OTH-230901
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Product Description
The OSG Spiral Flute Tap (1/2"-20 UNF) is a general-purpose spiral-flute tap with a modified bottoming chamfer, 3 flutes, and H7 / 2B-3B tolerance class (MPN 2942908). 3G Electric interprets customer demand and delivers this genuine industrial tool across 14 departments — and far more — with specialist depth in combustion, pumps and controls as an authorised distributor for brands including OSG, Schneider, ABB, Siemens, SKF, Festo, Fluke, Interpump and FBR.
Supplied to the Philippines — compatible with 60 Hz installations. DHL Express delivery to Manila, Quezon City, Cebu, customs and duties handled door-to-door.
Frequently Asked Questions
What is the OSG spiral flute tap 1/2"-20 UNF used for?
This OSG spiral flute tap is designed for threading blind holes in materials such as steel and stainless steel. Its spiral flute design evacuates chips upward, preventing clogging. It is commonly used in automotive, aerospace, and general manufacturing applications requiring precise UNF threads.
What are the specifications of the OSG spiral flute tap MPN 2942908?
The OSG spiral flute tap has a thread size of 1/2"-20 UNF, with a tolerance class of H7 / 2B-3B. It features 3 flutes and a modified bottoming chamfer for threading close to the bottom of blind holes. The manufacturer part number is 2942908.
Where to buy OSG taps in worldwide?
You can source OSG taps worldwide through 3G Electric, a global industrial equipment distributor. We handle full logistics, customs clearance, and delivery to your location. Contact us for availability and lead time on the OSG spiral flute tap MPN 2942908.
How to select the correct OSG tap for UNF threads?
To select the correct OSG tap, match the thread size (e.g., 1/2"-20 UNF) and tolerance class (e.g., H7 / 2B-3B) to your application. For blind holes, use a spiral flute tap with a modified bottoming chamfer. OSG taps are precision-ground for consistent thread quality.
Used in
Common applications for OSGOSG Products
3G Electric supplies OSG general purpose spiral-flute taps. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.















