OSG Screw Thread Insert STI Tap: Spiral Fute, 3/8"-16 UNC, H3 / 2B-3B
SKU 3G-OTH-262345
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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 aluminum and other materials for installing helical wire thread inserts. It is commonly applied in aerospace, automotive, and general manufacturing where strong, wear-resistant threads are needed in softer base materials.
What are the specifications of the OSG STI Tap 1303901008?
The OSG STI Tap 1303901008 is a spiral-flute tap for aluminum, sized 3/8"-16 UNC with a thread class of H3 / 2B-3B. It has 2 flutes and is designed for through-hole threading. The manufacturer part number is 1303901008, and it is optimized for thread insert installation.
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 this and other OSG cutting tools.
How to select the correct OSG STI Tap for aluminum?
To select the correct OSG STI Tap for aluminum, match the thread size and pitch (e.g., 3/8"-16 UNC) to your insert requirements. Choose a spiral-flute design for through holes and ensure the thread class (H3 / 2B-3B) aligns with your tolerance needs. Always verify the tap is rated for aluminum to prevent galling.
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Common applications for OSGOSG Products
3G Electric supplies OSG spiral-flute sti taps for aluminum. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.















