OSG Screw Thread Insert STI Tap: Straight Fute, 3/8"-16 UNC, H3 / 2B-3B, 4 Flute
The OSG Screw Thread Insert STI Tap (MPN 1812900) is a general-purpose STI tap with a straight flute design, sized 3/8"-16 UNC. It features a bottoming chamfer, 4 flutes, and an H3 / 2B-3B tolerance class, making it…
SKU 3G-OTH-262020
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 1812900) is a general-purpose STI tap with a straight flute design, sized 3/8"-16 UNC. It features a bottoming chamfer, 4 flutes, and an H3 / 2B-3B tolerance class, making it suitable for threading applications requiring 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 a pre-drilled hole before installing a helical wire thread insert. This 3/8"-16 UNC tap with a bottoming chamfer is ideal for general-purpose thread repair and reinforcement in metalworking and industrial maintenance applications.
What are the specifications of the OSG STI Tap 1812900?
The OSG STI Tap 1812900 has a UNC thread size of 3/8"-16, a thread class of H3 / 2B-3B, 4 flutes, and a bottoming chamfer. It is designed for cutting threads that accept screw thread inserts, ensuring proper fit and strength in the host material.
Where to buy OSG STI Tap 1812900 worldwide?
3G Electric supplies the OSG STI Tap 1812900 to customers worldwide. We handle full logistics, customs clearance, and delivery to your facility. Contact us for a quote and lead time on this general-purpose STI tap for thread insert applications.
How to select the correct STI tap size for a thread insert?
To select the correct STI tap, match the tap's thread size and pitch to the thread insert's internal thread specification. For a 3/8"-16 UNC insert, use an STI tap with the same designation. The H3 / 2B-3B class ensures proper tolerance for the insert's external threads. Always verify the insert manufacturer's recommendations.
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3G Electric supplies OSG general purpose sti taps. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.
