OSG Spiral Point Tap: #4-40 UNC, H4 / 2B-3B, 2 Flute
SKU 3G-OTH-215544
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Frequently Asked Questions
What is the OSG spiral point tap #4-40 UNC used for?
The OSG spiral point tap #4-40 UNC is designed for through-hole threading in ferrous and non-ferrous materials. Its spiral-point geometry pushes chips forward, reducing chip clogging and enabling faster tapping cycles in production environments.
What are the specifications of the OSG spiral point tap #4-40 UNC?
This OSG tap has a #4-40 UNC thread size, H4 / 2B-3B tolerance class, 2-flute design, and plug chamfer. The manufacturer part number is 2816308. It is a general-purpose spiral-point tap suitable for through-hole applications.
Where to buy OSG spiral point taps in worldwide?
3G Electric supplies OSG spiral point taps worldwide. As a global industrial distributor, we handle full logistics, customs clearance, and delivery to your location. Contact us for availability and lead time on the OSG #4-40 UNC tap MPN 2816308.
How to select the correct OSG spiral point tap for my application?
Select the OSG spiral point tap based on thread size (e.g., #4-40 UNC), material type, and hole configuration. For through-holes, spiral-point taps are ideal. Match the tolerance class (H4 / 2B-3B) to your required thread fit. Consult OSG's technical data for optimal speeds and feeds.
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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.















