OSG Spiral Point Tap: 1 1/4"-7 UNC, H6 / 2B-3B, 4 Flute
SKU 3G-OTH-214377
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Frequently Asked Questions
What is the OSG spiral point tap 2850401 used for?
This OSG spiral point tap is designed for through-hole threading in industrial machining. Its 1 1/4"-7 UNC size and plug chamfer make it suitable for general-purpose tapping in steel, cast iron, and non-ferrous materials across manufacturing and maintenance operations.
What are the specifications of the OSG 2850401 tap?
The OSG 2850401 is a spiral point tap with 1 1/4"-7 UNC thread, H6 / 2B-3B tolerance, 4 flutes, and a plug chamfer. It is a general-purpose tap for through-hole applications, manufactured by OSG under MPN 2850401.
Where to buy OSG taps like 2850401 worldwide?
3G Electric supplies OSG taps including the 2850401 model to customers worldwide. We handle full logistics, customs clearance, and delivery to your facility. Contact us for pricing and lead time on this general-purpose spiral point tap.
How to select the correct OSG tap for UNC threads?
Select an OSG tap by matching thread size (e.g., 1 1/4"-7 UNC), chamfer type (plug for through-holes), and tolerance class (H6 for 2B-3B fit). Spiral point taps push chips forward, ideal for through-holes. Confirm material compatibility with OSG's recommendations.
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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.















