OSG Spiral Point Tap: 5/16"-18 UNC, H3 / 2B-3B, 3 Flute, Plug Chamfer
The OSG Spiral Point Tap (5/16"-18 UNC, MPN 1231005) is a general-purpose tap with a plug chamfer, TiN coated high-speed steel construction, and 3 flutes. It is specified as H3 / 2B-3B class of fit, designed for…
SKU 3G-OTH-214858
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Product Description
The OSG Spiral Point Tap (5/16"-18 UNC, MPN 1231005) is a general-purpose tap with a plug chamfer, TiN coated high-speed steel construction, and 3 flutes. It is specified as H3 / 2B-3B class of fit, designed for through-hole threading in a range of materials.
Frequently Asked Questions
What is the OSG spiral point tap 5/16-18 UNC used for?
The OSG spiral point tap is used for threading blind or through holes in ferrous and non-ferrous materials. Its spiral point design pushes chips ahead, reducing clogging. Common applications include automotive, aerospace, and general manufacturing where precise UNC threads are required.
What are the specifications of the OSG 1231005 tap?
The OSG 1231005 is a 5/16-18 UNC spiral point tap with H3 / 2B-3B tolerance, 3 flutes, plug chamfer, and TiN coated high speed steel. It is designed for general purpose threading and is manufactured by OSG.
Where to buy OSG taps in worldwide?
You can source OSG taps worldwide through 3G Electric, a global industrial equipment distributor. We handle full logistics, customs clearance, and delivery to your location. Contact us for availability and lead time on the OSG 1231005 or other OSG threading tools.
How to select the correct OSG tap for a threading application?
Select an OSG tap based on material, thread size, and hole type. For through holes, a spiral point tap like the 5/16-18 UNC is ideal. Match the tap tolerance (e.g., H3) to the required thread class (2B or 3B). Consider coating (TiN for steel) and chamfer type (plug for general use).
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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.















