OSG Straight Flute Tap: 5/16"-18 UNC, H3 / 2B-3B, 3 Flute, Plug Chamfer
The OSG Straight Flute Tap (5/16"-18 UNC) is a general-purpose hand tap with a plug chamfer, 3 flutes, and TiN-coated high-speed steel construction. It is manufactured to H3 / 2B-3B tolerance specifications (MPN…
SKU 3G-OTH-221662
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Product Description
The OSG Straight Flute Tap (5/16"-18 UNC) is a general-purpose hand tap with a plug chamfer, 3 flutes, and TiN-coated high-speed steel construction. It is manufactured to H3 / 2B-3B tolerance specifications (MPN 1170705). 3G Electric interprets your demand for this OEM threading tool, sources it across our 14 industrial departments, and provides specialist support to ensure you get the right solution.
Frequently Asked Questions
What is OSG Straight Flute Tap 5/16"-18 UNC used for?
This OSG tap is used for cutting internal threads in through or blind holes in a wide range of materials. Its TiN coating reduces friction and extends tool life, making it suitable for general-purpose tapping in machining, automotive, and industrial maintenance applications.
What are the specifications of OSG Straight Flute Tap 5/16"-18 UNC?
This OSG tap has a 5/16"-18 UNC thread, H3 / 2B-3B tolerance, 3 flutes, and a plug chamfer. It is made of TiN coated high speed steel. The manufacturer part number is 1170705. It is designed for general purpose hand tapping.
Where to buy OSG Straight Flute Tap 5/16"-18 UNC worldwide?
3G Electric supplies and delivers OSG taps 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 OSG cutting tools.
How to select the correct tap for a 5/16"-18 UNC thread?
Select a tap with the same thread size and pitch as your hole, such as this OSG 5/16"-18 UNC. Choose a plug chamfer for most blind holes. For harder materials, consider a TiN coated high speed steel tap like this one to improve wear resistance and thread quality.
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Common applications for OSGOSG Products
3G Electric supplies OSG general purpose hand taps. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.















