OSG Spiral Flute Tap: 5/16"-24 UNF, H3 / 2B-3B, 3 Flute
SKU 3G-OTH-231127
Need installation or engineering help?
Ask a question
Frequently Asked Questions
What is the OSG spiral flute tap 5/16-24 UNF used for?
This OSG spiral flute tap is designed for threading blind holes in materials like steel and aluminum. Its spiral flute design evacuates chips upward, preventing clogging and ensuring clean threads. It is commonly used in automotive, aerospace, and general machining applications.
What are the specifications of the OSG tap MPN 1430705?
The OSG tap MPN 1430705 is a 5/16-24 UNF spiral flute tap with a H3 / 2B-3B tolerance class. It has 3 flutes and a bottoming chamfer, making it suitable for threading to the bottom of blind holes. It is a general-purpose tap for precision threading.
Where to buy OSG taps in worldwide?
3G Electric supplies OSG taps like the 5/16-24 UNF spiral flute tap to customers worldwide. We handle full logistics, customs clearance, and delivery to your location. Contact us for pricing and lead time on this and other OSG threading tools.
How to select the right OSG tap for blind holes?
For blind holes, choose a spiral flute tap like this OSG 5/16-24 UNF model. The spiral flutes push chips out of the hole, preventing breakage. Ensure the chamfer type (bottoming) matches your thread depth requirement. Always match the tap tolerance (H3) to your desired thread class (2B-3B).
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.















