OSG Thread Forming Tap: #4-40 UNC, 2B, Bottoming Chamfer, High Speed Steel (MPN 2864800)
SKU 3G-OTH-238324
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Frequently Asked Questions
What is the OSG Thread Forming Tap #4-40 UNC used for?
The OSG Thread Forming Tap #4-40 UNC is used to create internal threads in metal or plastic workpieces without cutting material. It is ideal for applications requiring strong, burr-free threads in automotive, aerospace, and general manufacturing. The bottoming chamfer allows threading close to the bottom of blind holes.
What are the specifications of the OSG Thread Forming Tap #4-40 UNC?
The OSG Thread Forming Tap has a #4-40 UNC thread size, 2B class of fit, and a bottoming chamfer. It is made from high-speed steel (HSS) for durability. The manufacturer part number is 2864800. This tap is designed for general-purpose thread forming in a variety of materials.
Where to buy OSG Thread Forming Tap #4-40 UNC worldwide?
You can source the OSG Thread Forming Tap #4-40 UNC (MPN 2864800) through 3G Electric, a global industrial equipment distributor. We handle full logistics, customs clearance, and delivery to worldwide destinations. Contact us for availability and lead time; we supply this tap to procurement teams and engineers globally.
How to select the correct OSG Thread Forming Tap for your application?
To select the correct OSG Thread Forming Tap, match the thread size (e.g., #4-40 UNC), class of fit (2B), and chamfer type (bottoming for blind holes) to your workpiece material and hole depth. High-speed steel taps suit general-purpose use. For best results, ensure proper lubrication and alignment during tapping.
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3G Electric supplies OSG general purpose thread-forming taps. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.















