OSG Spiral Point Tap: 5/16"-18 UNC, H5 / 2B-3B, 3 Flute, Plug Chamfer
The OSG Spiral Point Tap (5/16"-18 UNC, MPN 1241000) is a general-purpose spiral-point tap with an H5 / 2B-3B tolerance, 3-flute design, plug chamfer, and high-speed steel construction. 3G Electric interprets this…
SKU 3G-OTH-215674
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Product Description
The OSG Spiral Point Tap (5/16"-18 UNC, MPN 1241000) is a general-purpose spiral-point tap with an H5 / 2B-3B tolerance, 3-flute design, plug chamfer, and high-speed steel construction. 3G Electric interprets this demand and sources the genuine OSG tap, supporting your machining operations across 14 industrial departments with specialist depth in cutting tools and controls.
Frequently Asked Questions
What is the OSG spiral point tap 5/16-18 UNC used for?
The OSG spiral point tap (MPN 1241000) is used for threading blind or through holes in ferrous and non-ferrous materials. Its spiral point design pushes chips forward, reducing clogging and breakage, making it ideal for production tapping in automotive, aerospace, and general manufacturing applications.
What are the specifications of the OSG 5/16-18 UNC spiral point tap?
This OSG tap has a 5/16-18 UNC thread size, H5 / 2B-3B tolerance, 3 flutes, plug chamfer, and is made of high-speed steel. The manufacturer part number is 1241000. It is designed for general-purpose tapping in materials up to 850 °C hardness, with a 24 VDC compatible coating option.
Where to buy OSG taps in worldwide?
You can source OSG taps, including the 5/16-18 UNC spiral point tap (MPN 1241000), through 3G Electric. As a global industrial equipment distributor since 1990, we handle full logistics, customs clearance, and delivery to worldwide destinations. Contact us for availability and lead time.
How to select the correct OSG tap for a threading application?
Select an OSG tap based on thread size (e.g., 5/16-18 UNC), material type, and hole configuration. For blind holes, use spiral point taps to push chips forward. Match the tap tolerance (H5 for 2B-3B class) to your required fit. Consult OSG's technical data for speed and feed recommendations.
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Common applications for OSGOSG Products
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.














