OSG Spiral Flute Tap: 5/16"-18 UNC, H11, 3 Flute, Modified Bottoming Chamfer (MPN 2941108)
SKU 3G-OTH-211278
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Frequently Asked Questions
What is the OSG spiral flute tap 5/16"-18 UNC used for?
This OSG spiral flute tap is designed for threading blind holes in materials such as steel and stainless steel. Its spiral flute design evacuates chips upward, preventing clogging and ensuring clean threads. The modified bottoming chamfer allows threading close to the bottom of the hole, making it ideal for automotive, aerospace, and general manufacturing applications.
What are the specifications of the OSG spiral flute tap 5/16"-18 UNC?
The OSG spiral flute tap has a thread size of 5/16"-18 UNC, an H11 tolerance, 3 flutes, and a modified bottoming chamfer. The manufacturer part number is 2941108. It is an oversized tap designed for producing threads in blind holes, with chip evacuation facilitated by the spiral flute geometry.
Where to buy the OSG spiral flute tap 5/16"-18 UNC worldwide?
You can source the OSG spiral flute tap 5/16"-18 UNC (MPN 2941108) from 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 source and deliver this tap to your location.
How to select the correct OSG spiral flute tap for blind holes?
To select the correct OSG spiral flute tap for blind holes, match the thread size (e.g., 5/16"-18 UNC), tolerance (H11), and chamfer type (modified bottoming) to your application. Consider material hardness and hole depth. OSG taps are designed for efficient chip evacuation; consult technical data for optimal cutting speed and lubrication.
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3G Electric supplies OSG oversized spiral-flute taps. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.















