OSG Screw Thread Insert STI Tap: Straight Fute, #10-32 UNF, H2 / 2B-3B, 3 Flute
The OSG Screw Thread Insert STI Tap (SKU 33ZK79, MPN 1805900) is a general-purpose STI tap with a straight flute design, sized #10-32 UNF. It features a bottoming chamfer, 3 flutes, and an H2 / 2B-3B tolerance class…
SKU 3G-OTH-262062
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Product Description
The OSG Screw Thread Insert STI Tap (SKU 33ZK79, MPN 1805900) is a general-purpose STI tap with a straight flute design, sized #10-32 UNF. It features a bottoming chamfer, 3 flutes, and an H2 / 2B-3B tolerance class, suitable for threading insert-ready holes.
Frequently Asked Questions
What is OSG Screw Thread Insert STI Tap used for?
This OSG STI tap cuts internal threads for helical coil inserts in metal parts. It is used in automotive, aerospace, and general manufacturing to restore or reinforce threads in aluminum, steel, and cast iron. The bottoming chamfer allows threading to the bottom of blind holes.
What are the specifications of the OSG STI Tap #10-32 UNF?
This OSG STI tap has a #10-32 UNF thread size, H2 / 2B-3B tolerance, 3 straight flutes, and a bottoming chamfer. It is designed for general purpose tapping of screw thread inserts. The manufacturer part number is 1805900.
Where to buy OSG STI Tap #10-32 UNF worldwide?
3G Electric supplies the OSG STI Tap #10-32 UNF worldwide. As a global industrial distributor, we handle full logistics, customs clearance, and delivery to your location. Contact us for availability and lead time on this OSG tap.
How to select the correct STI tap for a thread insert?
Select an STI tap that matches the thread size and pitch of the insert, such as #10-32 UNF. Use a bottoming chamfer for blind holes or a plug chamfer for through holes. The H2 tolerance suits 2B-3B class threads. Always refer to the insert manufacturer's recommendations.
Used in
Common applications for OSGOSG Products
3G Electric supplies OSG general purpose sti taps. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.















