OSG Screw Thread Insert STI Tap: Spiral Fute, 7/8"-14 UNF, H3 / 2B-3B, 4 Flute
The OSG Screw Thread Insert STI Tap (MPN 30205708) is a spiral-flute tap for steel and stainless steel, sized 7/8"-14 UNF with an H3 / 2B-3B tolerance and a bottoming chamfer. It features 4 flutes, designed for…
SKU 3G-OTH-244363
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 (MPN 30205708) is a spiral-flute tap for steel and stainless steel, sized 7/8"-14 UNF with an H3 / 2B-3B tolerance and a bottoming chamfer. It features 4 flutes, designed for threading holes to accept 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 cut internal threads in steel and stainless steel for installing helical wire thread inserts. It is ideal for repairing or reinforcing threads in industrial applications like machining, automotive, and heavy equipment maintenance.
What are the specifications of the OSG 30205708 STI Tap?
The OSG 30205708 STI Tap has a 7/8"-14 UNF thread, H3 / 2B-3B tolerance, 4 flutes, and a bottoming chamfer. It is a spiral-flute tap designed for steel and stainless steel. The manufacturer part number is 30205708.
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. Contact us for pricing and lead time on the OSG 30205708 7/8"-14 UNF spiral-flute tap.
How to select the correct STI tap size for a thread insert?
Select an STI tap that matches the thread insert's nominal size and pitch, such as 7/8"-14 UNF. Use a bottoming chamfer for blind holes and a spiral-flute design for steel or stainless steel to clear chips. Always verify the tap tolerance (e.g., H3 / 2B-3B) matches your required thread class.
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.
