OSG Spiral Flute Tap: 9/16"-18 UNF, H3 / 2B-3B, 3 Flute
The OSG Spiral Flute Tap (9/16"-18 UNF) is a 3-flute, modified bottoming chamfer tap with H3 / 2B-3B tolerance, designed for threading steel and stainless steel. This OSG tap, MPN 1645096183, is a spiral-flute type…
SKU 3G-OTH-217887
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Product Description
The OSG Spiral Flute Tap (9/16"-18 UNF) is a 3-flute, modified bottoming chamfer tap with H3 / 2B-3B tolerance, designed for threading steel and stainless steel. This OSG tap, MPN 1645096183, is a spiral-flute type for chip evacuation in through-hole applications.
Frequently Asked Questions
What is the OSG spiral flute tap 9/16"-18 UNF used for?
This OSG spiral flute tap is designed for threading blind holes in steel and stainless steel. Its spiral flute design evacuates chips upward, preventing clogging, while the modified bottoming chamfer allows threading close to the hole bottom. It is commonly used in automotive, aerospace, and general manufacturing applications.
What are the specifications of the OSG spiral flute tap 9/16"-18 UNF?
The OSG spiral flute tap has a thread size of 9/16"-18 UNF, with a H3 / 2B-3B tolerance class. It features 3 flutes and a modified bottoming chamfer. The manufacturer part number is 1645096183. This tap is intended for threading steel and stainless steel materials in blind hole applications.
Where to buy OSG spiral flute taps worldwide?
3G Electric supplies OSG spiral flute taps worldwide. As a global industrial equipment distributor since 1990, we handle full logistics, customs clearance, and delivery to your location. Contact us for availability and lead time on the OSG spiral flute tap 9/16"-18 UNF (MPN 1645096183). We source and deliver to meet your production needs.
How to select the correct OSG spiral flute tap for steel?
Select an OSG spiral flute tap based on thread size, tolerance class, and material. For steel and stainless steel blind holes, use a tap with a modified bottoming chamfer to thread close to the hole bottom. The H3 / 2B-3B tolerance ensures proper fit. Always match the tap to the specific material hardness and thread depth required.
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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.















