OSG Spiral Flute Tap: 5/8"-18 UNF, H3 / 2B-3B, 4 Flute
The OSG Spiral Flute Tap (5/8"-18 UNF, MPN 2933401) is a general purpose spiral-flute tap with an H3 / 2B-3B tolerance and a modified bottoming chamfer. It features 4 flutes for efficient chip evacuation in…
SKU 3G-OTH-229944
Need installation or engineering help?
Ask a question
Product Description
The OSG Spiral Flute Tap (5/8"-18 UNF, MPN 2933401) is a general purpose spiral-flute tap with an H3 / 2B-3B tolerance and a modified bottoming chamfer. It features 4 flutes for efficient chip evacuation in through-hole threading applications.
Frequently Asked Questions
What is the OSG spiral flute tap 5/8"-18 UNF used for?
This OSG spiral flute tap is designed for threading blind holes in ferrous and non-ferrous materials. The spiral flute design evacuates chips upward, making it ideal for deep-hole tapping. It is commonly used in automotive, aerospace, and general manufacturing applications where precise UNF threads are required.
What are the specifications of the OSG spiral flute tap MPN 2933401?
The OSG spiral flute tap has a thread size of 5/8"-18 UNF, with a H3 / 2B-3B tolerance class. It features 4 flutes and a modified bottoming chamfer. The manufacturer part number is 2933401. This tap is suitable for producing threads in blind holes with high accuracy.
Where to buy OSG spiral flute taps worldwide?
You can source OSG spiral flute 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 times. We supply genuine OSG cutting tools for industrial applications.
How to select the correct OSG tap for UNF threads?
Select an OSG tap based on thread size, pitch, and tolerance class. For 5/8"-18 UNF, use a tap with H3 / 2B-3B tolerance for medium-fit applications. Consider material type and hole configuration: spiral flute taps are best for blind holes. Always match the tap chamfer to the hole depth requirement.
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.















