OSG Screw Thread Insert STI Tap: Straight Fute, 1/2"-20 UNF, H3 / 2B-3B, 4 Flute

The OSG Screw Thread Insert STI Tap is used to cut internal threads in metal or plastic for installing helical wire thread inserts. It is commonly applied in automotive, aerospace, and general manufacturing to repair or reinforce threaded holes, ensuring strong, wear-resistant connections.

The OSG STI Tap 1813800 is a general-purpose tap with a 1/2"-20 UNF thread, H3 / 2B-3B tolerance, 4 flutes, and a plug chamfer. It has a straight flute design for chip evacuation. The H3 / 2B-3B specification ensures compatibility with standard thread insert classes.

You can source the OSG STI Tap 1813800 through 3G Electric, a global industrial equipment distributor. We handle full logistics, customs clearance, and delivery to worldwide destinations. Contact us for availability and lead time; we supply genuine OSG tooling for your manufacturing needs.

Select an OSG STI tap based on the thread size and class of the insert. For a 1/2"-20 UNF insert, use a tap with matching pitch and H3 / 2B-3B tolerance. Ensure the tap has a plug chamfer for through-hole applications. Always match the tap to the insert manufacturer's specifications for proper fit.