OSG Screw Thread Insert STI Tap: Spiral Fute, 1/2"-13 UNC, H3 / 2B-3B, 4 Flute
The OSG Screw Thread Insert STI Tap (MPN 8018000) is a spiral-flute tap for 1/2"-13 UNC threads, with an H3 / 2B-3B tolerance and a bottoming chamfer. It features 4 flutes and is designed for thread-locking insert…
SKU 3G-OTH-273408
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Product Description
The OSG Screw Thread Insert STI Tap (MPN 8018000) is a spiral-flute tap for 1/2"-13 UNC threads, with an H3 / 2B-3B tolerance and a bottoming chamfer. It features 4 flutes and is designed for thread-locking insert installation. 3G Electric sources this genuine OSG tool as part of our industrial supply across 14 departments, with specialist expertise in combustion, pumps, and controls.
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 metalwork. It is designed for bottoming chamfer applications, producing threads to H3 / 2B-3B class tolerances. Common in automotive, aerospace, and general manufacturing where strong, wear-resistant threads are required.
What are the specifications of the OSG 8018000 STI tap?
The OSG 8018000 is a spiral-flute STI tap with a 1/2"-13 UNC thread size, H3 / 2B-3B tolerance class, 4 flutes, and a bottoming chamfer. It is designed for cutting threads in materials where chip evacuation is critical. The tap is made by OSG, a leading cutting tool manufacturer.
Where to buy OSG STI taps worldwide?
You can source OSG STI 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 times. 3G Electric supplies genuine OSG cutting tools for manufacturing applications.
How to select the correct STI tap for a screw thread insert?
Select an STI tap based on the insert's thread size and class. For a 1/2"-13 UNC insert, use a tap with matching thread dimensions and H3 / 2B-3B tolerance. OSG spiral-flute taps are ideal for through or blind holes. Always match the tap chamfer type (bottoming or plug) to your hole depth.
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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.
