OSG Screw Thread Insert STI Tap: Spiral Fute, 3/4"-16 UNF, H4 / 2B-3B
SKU 3G-OTH-281140
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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 before installing helical wire thread inserts. It is commonly applied in aerospace, automotive, and general manufacturing where strong, wear-resistant threads are required in aluminum, steel, or cast iron.
What are the specifications of the OSG STI Tap 31503508?
The OSG STI Tap 31503508 has a 3/4"-16 UNF thread size, H4 / 2B-3B tolerance, and a spiral flute design with 4 flutes. It is designed for tapping multiple materials and is manufactured by OSG. The H4 tolerance ensures proper fit for STI inserts in 2B or 3B class threads.
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 time on the OSG 31503508 or other STI tap sizes.
How to select the correct OSG STI Tap for an application?
To select the correct OSG STI Tap, match the tap thread size and pitch to the insert you plan to install. The H4 / 2B-3B tolerance on this 3/4"-16 UNF tap accommodates both 2B and 3B class threads. Use spiral flute taps for through-hole applications in materials like steel or aluminum.
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.
