OSG Screw Thread Insert STI Tap: Thread Forming, 1/4"-28 UNF, H3 / 2B-3B
The OSG Screw Thread Insert STI Tap is a thread-forming tap for 1/4"-28 UNF applications, with an H3 / 2B-3B tolerance and a modified bottoming chamfer (MPN 1626002108). This tool is designed for forming internal…
SKU 3G-OTH-403853
Local availability & support
- Delivery
- Worldwide DHL shipping from Singapore; 7–14 business days door-to-door for most destinations.
- Payment
- Invoicing in USD. Bank transfer (SWIFT) and corporate PO accepted.
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Product Description
The OSG Screw Thread Insert STI Tap is a thread-forming tap for 1/4"-28 UNF applications, with an H3 / 2B-3B tolerance and a modified bottoming chamfer (MPN 1626002108). This tool is designed for forming internal threads in workpieces to accommodate screw thread inserts.
Frequently Asked Questions
What is an OSG Screw Thread Insert STI Tap used for?
An OSG Screw Thread Insert STI Tap is used to form internal threads in pre-drilled holes for installing helical wire thread inserts. It is ideal for aerospace, automotive, and general manufacturing applications requiring strong, wear-resistant threads in softer materials like aluminum or cast iron.
What are the specifications of the OSG STI Tap 1/4"-28 UNF?
This OSG STI Tap has a thread size of 1/4"-28 UNF, a thread class of H3 / 2B-3B, and a modified bottoming chamfer. It is a thread-forming tap designed for screw thread inserts, with manufacturer part number 1626002108. It forms threads without cutting, reducing chip debris.
Where to buy OSG STI Taps worldwide?
3G Electric supplies OSG STI Taps worldwide. We handle full logistics, customs clearance, and delivery to your facility. As a global industrial solutions provider, we source genuine OSG taps and support procurement across 14 departments. Contact us for availability and lead time.
How to select the correct OSG STI Tap for thread inserts?
Select an OSG STI Tap based on the thread size and class required for your insert. For a 1/4"-28 UNF insert, use a tap with H3 / 2B-3B tolerance and a modified bottoming chamfer for blind holes. Ensure the tap matches the insert manufacturer's specifications for proper thread engagement and strength.
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Common applications for OSGOSG Products
3G Electric supplies OSG thread-forming sti taps. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.
