OSG Spiral Point Tap: 1/4"-28 UNF, H6 / 2B-3B, 3 Flute
SKU 3G-OTH-215166
Need installation or engineering help?
Ask a question
Frequently Asked Questions
What is an OSG spiral point tap used for?
An OSG spiral point tap is designed for through-hole threading in metals. Its spiral point pushes chips ahead, preventing clogging and ensuring clean threads. It is commonly used in automotive, aerospace, and general machining applications where efficient chip evacuation is critical.
What are the specifications of the OSG 1/4"-28 UNF spiral point tap?
This OSG tap has a 1/4"-28 UNF thread size, H6 / 2B-3B tolerance, 3 flutes, and a plug chamfer. It is a general-purpose spiral-point tap for through-hole threading. The manufacturer part number is 2840500.
Where to buy OSG taps in worldwide?
3G Electric supplies and delivers OSG taps worldwide. As a global industrial solutions provider, we handle full logistics and customs clearance to ensure your order arrives at your facility. Contact us for availability and lead time on this OSG spiral point tap.
How to select the correct OSG tap for a threading application?
Select an OSG tap based on thread size (e.g., 1/4"-28 UNF), tolerance class (H6 for precision), material type, and hole configuration (through or blind). For through holes, a spiral point tap like this one is ideal. Always match the tap to your workpiece hardness and machine setup.
Used in
Common applications for OSGOSG Products
3G Electric supplies OSG general purpose spiral-point taps. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.















