OSG Screw Thread Insert STI Tap: Spiral Fute, 9/16"-18 UNF, H4 / 2B-3B, 4 Flute
The OSG Screw Thread Insert STI Tap is a spiral-flute tap for steel and stainless steel, model 30203508. It features a 9/16"-18 UNF thread, H4 / 2B-3B tolerance, 4 flutes, and a bottoming chamfer.
SKU 3G-OTH-244217
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 spiral-flute tap for steel and stainless steel, model 30203508. It features a 9/16"-18 UNF thread, H4 / 2B-3B tolerance, 4 flutes, and a bottoming chamfer.
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 cuts internal threads in steel and stainless steel to accept helical wire thread inserts. It is commonly used in aerospace, automotive, and industrial maintenance to repair or reinforce stripped threads without replacing the parent component.
What are the specifications of the OSG 30203508 STI Tap?
The OSG 30203508 is a spiral-flute STI tap with a 9/16"-18 UNF thread, H4 / 2B-3B tolerance, 4 flutes, and a bottoming chamfer. It is designed for threading holes in steel and stainless steel to accept screw thread inserts.
Where to buy OSG STI Taps worldwide?
3G Electric supplies OSG STI Taps worldwide. As a global industrial sourcing partner, we handle logistics, customs clearance, and delivery to your facility. Contact us for pricing and lead time on the OSG 30203508 or other OSG tooling.
How to select the correct STI tap size for a thread repair?
Select an STI tap that matches the original thread size and pitch, such as 9/16"-18 UNF, and the required tolerance class (e.g., H4 / 2B-3B). Use a bottoming chamfer for blind holes. Always follow the thread insert manufacturer's drill size and installation instructions.
Used in
Common applications for OSGOSG Products
3G Electric supplies OSG spiral-flute sti taps for steel & stainless steel. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.
