OSG Screw Thread Insert STI Tap: Spiral Fute, 9/16"-12 UNC, H4 / 2B-3B
SKU 3G-OTH-281147
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Frequently Asked Questions
What is an OSG Screw Thread Insert STI Tap used for?
An OSG Screw Thread Insert STI Tap is used to cut internal threads in multiple materials for installing screw thread inserts. It is commonly applied in aerospace, automotive, and general manufacturing where strong, wear-resistant threads are required in softer base materials.
What are the specifications of the OSG 31502501 STI Tap?
The OSG 31502501 is a spiral-flute STI tap with a thread size of 9/16"-12 UNC, a thread limit of H4 / 2B-3B, and 4 flutes. It is designed for tapping holes that will accept screw thread inserts, providing accurate thread geometry in multiple materials.
Where to buy OSG STI taps in 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 time on the OSG 31502501 spiral-flute tap.
How to select the correct OSG STI tap for an application?
Select an OSG STI tap by matching the thread size, pitch, and class of fit (e.g., H4 / 2B-3B) to your insert requirements. Spiral-flute taps are ideal for blind holes as they evacuate chips upward. Always verify material compatibility and use appropriate cutting fluid for best results.
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Common applications for OSGOSG Products
3G Electric supplies OSG spiral-flute sti taps for multiple materials. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.















