OSG Spiral Flute Tap: 7/16"-20 UNF, H3 / 2B-3B, 3 Flute, Bottoming Chamfer
The OSG Spiral Flute Tap (7/16"-20 UNF) is a bottoming-chamfer, 3-flute tap made from V-coated powdered metal, with an H3 / 2B-3B tolerance class (MPN 0143308). Designed for threading steel and stainless steel, it is…
SKU 3G-OTH-218625
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Product Description
The OSG Spiral Flute Tap (7/16"-20 UNF) is a bottoming-chamfer, 3-flute tap made from V-coated powdered metal, with an H3 / 2B-3B tolerance class (MPN 0143308). Designed for threading steel and stainless steel, it is supplied by 3G Electric, a global industrial solutions provider that interprets customer demand and delivers genuine equipment across 14 departments, with specialist depth in combustion, pumps, and controls.
Frequently Asked Questions
What is the OSG spiral flute tap 0143308 used for?
The OSG spiral flute tap 0143308 is designed for threading blind holes in steel and stainless steel. Its spiral flute design evacuates chips upward, preventing clogging. The V coating and powdered metal construction provide wear resistance for production tapping. It is commonly used in automotive, aerospace, and general manufacturing applications.
What are the specifications of the OSG 7/16-20 UNF spiral flute tap?
This OSG tap has a thread size of 7/16-20 UNF, with a H3 / 2B-3B tolerance class. It features 3 flutes, a bottoming chamfer, and a V coating on powdered metal. The manufacturer part number is 0143308. It is designed for tapping blind holes in steel and stainless steel.
Where to buy OSG taps in worldwide?
You can source OSG taps, including the 0143308 spiral flute tap, through 3G Electric. As a global industrial equipment distributor, 3G Electric handles full logistics, customs clearance, and delivery to worldwide destinations. Contact 3G Electric for availability and lead time on this and other OSG tooling.
How to select the correct OSG tap for stainless steel?
For stainless steel, choose a tap with a spiral flute design for chip evacuation, a V or TiCN coating for heat resistance, and a powdered metal substrate for toughness. The OSG 0143308 meets these criteria with its V coating and powdered metal construction. Ensure the thread class (H3 / 2B-3B) matches your hole tolerance.
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3G Electric supplies OSG spiral-flute taps for steel & stainless steel. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.
