OSG Screw Thread Insert STI Tap: Spiral Fute, 9/16"-12 UNC, H4 / 2B-3B, 4 Flute
The OSG Screw Thread Insert STI Tap (MPN 30203208) is a spiral-flute tap for steel and stainless steel, sized 9/16"-12 UNC with a bottoming chamfer. It features an H4 / 2B-3B tolerance class and 4 flutes, designed…
SKU 3G-OTH-244264
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Product Description
The OSG Screw Thread Insert STI Tap (MPN 30203208) is a spiral-flute tap for steel and stainless steel, sized 9/16"-12 UNC with a bottoming chamfer. It features an H4 / 2B-3B tolerance class and 4 flutes, designed for threading holes that accept screw thread inserts. 3G Electric sources this genuine OSG tool as part of our industrial supply across 14 departments, with specialist expertise in cutting tools and precision threading.
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 in steel and stainless steel for screw thread inserts. It creates threads that accept a helically coiled insert, commonly used in aerospace, automotive, and industrial repair applications where stronger or replaceable threads are needed.
What are the specifications of the OSG STI tap 30203208?
The OSG STI tap model 30203208 has a thread size of 9/16"-12 UNC, a thread limit of H4 / 2B-3B, 4 flutes, and a bottoming chamfer. It is a spiral-flute tap designed for steel and stainless steel. The H4 tolerance ensures precise fit for insert installation.
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 spiral-flute STI tap model 30203208.
How to select the correct STI tap for a repair job?
To select the correct STI tap, match the thread size and pitch to the insert you plan to use. For steel or stainless steel, choose a spiral-flute tap like this OSG model for chip evacuation. Verify the thread tolerance (e.g., H4 / 2B-3B) matches your required fit class. Always use proper cutting fluid.
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3G Electric supplies OSG spiral-flute sti taps for steel & stainless steel. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.
