OSG #4-48 UNF Thread-Forming STI Tap, H2 / 2B-3B, Modified Bottoming Chamfer
The OSG Screw Thread Insert STI Tap is a thread-forming tap designed for #4-48 UNF applications, featuring an H2 / 2B-3B tolerance class and a Modified Bottoming Chamfer (MPN 1626000508). This tool is engineered to…
SKU 3G-OTH-403927
Local availability & support
- Delivery
- Worldwide DHL shipping from Singapore; 7–14 business days door-to-door for most destinations.
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- 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 designed for #4-48 UNF applications, featuring an H2 / 2B-3B tolerance class and a Modified Bottoming Chamfer (MPN 1626000508). This tool is engineered to form internal threads for screw thread inserts, ensuring precise fit and performance in industrial machining operations.
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 commonly applied in aerospace, automotive, and industrial maintenance to repair or reinforce threads in aluminum, steel, and other materials.
What are the specifications of the OSG STI Tap #4-48 UNF?
The OSG STI Tap has a #4-48 UNF thread size, H2 / 2B-3B tolerance, and a modified bottoming chamfer. It is a thread-forming tap designed for screw thread inserts. The manufacturer part number is 1626000508. OSG is the OEM brand for this precision tool.
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 threading tools.
How to select the correct OSG STI Tap for thread inserts?
To select the correct OSG STI Tap, match the tap thread size and pitch to the insert's specifications. For a #4-48 UNF insert, use a thread-forming STI tap with H2 / 2B-3B tolerance. Ensure the tap chamfer matches the hole type—modified bottoming for blind holes. OSG taps are precision-ground for consistent results.
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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.