OSG Spiral Flute Tap: 3/8"-24 UNF, H3 / 2B-3B, 3 Flute
The OSG Spiral Flute Tap (3/8"-24 UNF, MPN 2931808) is a general-purpose spiral-flute tap with a modified bottoming chamfer, featuring an H3 / 2B-3B tolerance class and 3 flutes. 3G Electric interprets demand and…
SKU 3G-OTH-230676
Need installation or engineering help?
Ask a question
Product Description
The OSG Spiral Flute Tap (3/8"-24 UNF, MPN 2931808) is a general-purpose spiral-flute tap with a modified bottoming chamfer, featuring an H3 / 2B-3B tolerance class and 3 flutes. 3G Electric interprets demand and delivers this genuine OSG tap across 14 industrial departments — and we supply far more than is listed. Our specialist depth in combustion, pumps and controls (as an authorised distributor) anchors trust, but our breadth spans brands like Schneider, ABB, Siemens, SKF, Festo, Fluke, Interpump and FBR.
Frequently Asked Questions
What is the OSG spiral flute tap 3/8-24 UNF used for?
This OSG spiral flute tap is designed for threading blind holes in materials such as steel and aluminum. The spiral flute design evacuates chips upward, preventing clogging. It is commonly used in automotive, aerospace, and general manufacturing applications where precise internal threads are required.
What are the specifications of the OSG spiral flute tap 2931808?
The OSG spiral flute tap has a thread size of 3/8-24 UNF, with a H3 / 2B-3B tolerance class. It features 3 flutes and a modified bottoming chamfer, allowing threading close to the bottom of blind holes. The manufacturer part number is 2931808.
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 2931808.
How to select the correct OSG tap for blind holes?
For blind holes, choose a spiral flute tap like this OSG model, as it pushes chips out of the hole. Ensure the thread size (3/8-24 UNF) and tolerance (H3 / 2B-3B) match your requirements. A modified bottoming chamfer allows threading closer to the hole bottom. Consult OSG's technical data for material-specific recommendations.
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.















