OSG Screw Thread Insert STI Tap: Spiral Fute, 9/16"-18 UNF, H4 / 2B-3B
SKU 3G-OTH-281141
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Frequently Asked Questions
What is the OSG Screw Thread Insert STI Tap used for?
The 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, replaceable threads are required in aluminum, steel, or cast iron.
What are the specifications of the OSG Screw Thread Insert STI Tap 31502708?
The OSG Screw Thread Insert STI Tap has a thread size of 9/16"-18 UNF, a thread limit of H4 / 2B-3B, and a 4-flute spiral-flute design. The manufacturer part number is 31502708. It is designed for multiple materials and provides accurate thread forming for insert installation.
Where to buy OSG Screw Thread Insert STI Tap 31502708 worldwide?
You can source the OSG Screw Thread Insert STI Tap 31502708 worldwide through 3G Electric. We handle full logistics, customs clearance, and delivery to global destinations as an industrial equipment distributor. Contact us for availability and lead time.
How to select the correct OSG STI tap for thread inserts?
To select the correct OSG STI tap, match the thread size and pitch to the insert requirements—here 9/16"-18 UNF. Use the H4 / 2B-3B tolerance for standard fit. Ensure the tap is designed for the base material (e.g., aluminum or steel) and use proper tapping fluid for best results.
Used in
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.















