OSG Spiral Flute Tap: #4-40 UNC, 2B, 2 Flute, Bottoming Chamfer
SKU 3G-OTH-229842
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Frequently Asked Questions
What is OSG spiral flute tap #4-40 UNC used for?
This OSG spiral flute tap is used for threading blind holes in materials like steel and aluminum. Its bottoming chamfer and 2-flute design efficiently evacuate chips upward, making it ideal for general-purpose tapping in machining and maintenance applications.
What are the specifications of OSG spiral flute tap #4-40 UNC?
This OSG tap has a #4-40 UNC thread size, 2B class of fit, 2 flutes, a bottoming chamfer, and is made of high-speed steel. The manufacturer part number is 2985000. It is designed for threading blind holes in general-purpose industrial applications.
Where to buy OSG spiral flute tap #4-40 UNC worldwide?
3G Electric supplies and delivers this OSG spiral flute tap worldwide. We handle full logistics and customs clearance to ensure your order arrives at your facility. Contact us for availability and lead time on this and other cutting tools across 14 industrial departments.
How to select the right spiral flute tap for blind holes?
For blind holes, choose a spiral flute tap with a bottoming chamfer to thread close to the hole bottom. Ensure the tap size matches your thread specification, like #4-40 UNC. Use high-speed steel for general-purpose materials. OSG taps are a reliable choice for consistent thread quality.
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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.















