OSG Screw Thread Insert STI Tap: Thread Forming, #4-40 UNC, H3 / 2B-3B
The OSG Screw Thread Insert STI Tap is a thread-forming tap designed for #4-40 UNC applications, with an H3 / 2B-3B tolerance and a modified bottoming chamfer. This tool, MPN 1626000408, is engineered for forming…
SKU 3G-OTH-403866
Local availability & support — the Philippines
- Delivery
- 5–8 business days door-to-door; Bureau of Customs clearance typically 2–4 business days.
- Payment
- Invoicing in PHP or USD. Bank transfer and corporate PO accepted.
- Ships to
- Manila, Quezon City, Cebu, Davao, Batangas
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Product Description
The OSG Screw Thread Insert STI Tap is a thread-forming tap designed for #4-40 UNC applications, with an H3 / 2B-3B tolerance and a modified bottoming chamfer. This tool, MPN 1626000408, is engineered for forming threads in prepared holes to accept screw thread inserts.
Supplied to the Philippines — compatible with 60 Hz installations. DHL Express delivery to Manila, Quezon City, Cebu, customs and duties handled door-to-door.
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 screw 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 #4-40 UNC?
This OSG STI Tap is a thread-forming tap for #4-40 UNC screw thread inserts. It has an H3 / 2B-3B tolerance class and a modified bottoming chamfer. The manufacturer part number is 1626000408. It is designed to produce threads that accept standard STI inserts for repair or reinforcement.
Where to buy OSG STI Taps worldwide?
3G Electric supplies OSG STI Taps worldwide. We source genuine OSG cutting tools and handle full logistics, customs clearance, and delivery to your site. Contact us for pricing and lead time on this #4-40 UNC thread-forming tap (MPN 1626000408).
How to select the correct OSG STI Tap for thread inserts?
Select an OSG STI Tap based on the insert size (e.g., #4-40 UNC), thread class (H3 / 2B-3B), and chamfer type. A modified bottoming chamfer is used for blind holes. Always match the tap to the insert manufacturer's specifications to ensure proper thread engagement and insert retention.
Used in
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.
