OSG Screw Thread Insert STI Tap: Spiral Fute, 1"-12 UNF, H4 / 2B-3B, 4 Flute
The OSG Screw Thread Insert STI Tap (SKU 33ZF35, MPN 10802600) is a spiral-flute tap for 1"-12 UNF threads, featuring an H4 / 2B-3B tolerance and a bottoming chamfer with 4 flutes. 3G Electric interprets this demand…
SKU 3G-OTH-273375
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Product Description
The OSG Screw Thread Insert STI Tap (SKU 33ZF35, MPN 10802600) is a spiral-flute tap for 1"-12 UNF threads, featuring an H4 / 2B-3B tolerance and a bottoming chamfer with 4 flutes. 3G Electric interprets this demand and sources the genuine OSG tool, backed by our specialist expertise across 14 industrial departments — including cutting tools — to ensure you get the right thread insert tap for your application.
Frequently Asked Questions
What is an OSG spiral-flute STI tap used for?
An OSG spiral-flute STI tap is used to cut internal threads for screw thread inserts in materials that produce stringy chips, such as aluminum or low-carbon steel. The spiral flute design evacuates chips upward, making it ideal for blind-hole applications. This specific tap cuts 1"-12 UNF threads with a bottoming chamfer for threads close to the hole bottom.
What are the specifications of the OSG STI tap MPN 10802600?
The OSG STI tap MPN 10802600 has a 1"-12 UNF thread size, H4 / 2B-3B tolerance, 4 flutes, and a bottoming chamfer. It is a spiral-flute tap designed for screw thread inserts. The H4 tolerance ensures proper fit for insert installation, while the 2B-3B class covers both standard and tighter thread classes.
Where to buy OSG taps in worldwide?
You can source OSG taps, including the spiral-flute STI tap MPN 10802600, through 3G Electric. As a global industrial equipment distributor since 1990, 3G Electric handles full logistics, customs clearance, and delivery to worldwide destinations. Contact us for availability and lead time on this and other OSG tooling.
How to select the correct OSG STI tap for an application?
To select the correct OSG STI tap, match the thread size and pitch to the insert requirements—here 1"-12 UNF. Choose a spiral-flute design for blind holes and chip evacuation. The H4 / 2B-3B tolerance ensures compatibility with standard insert threads. Verify the chamfer type: bottoming for threads near hole bottoms, or plug for general use.
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Common applications for OSGOSG Products
3G Electric supplies OSG spiral-flute sti taps. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.
