OSG Screw Thread Insert STI Tap: Spiral Point, 5/16"-24 UNF, H2 / 2B-3B, 3 Flute
The OSG Screw Thread Insert STI Tap is a spiral-point tap for multiple materials, specified as 5/16"-24 UNF with H2 / 2B-3B tolerance, 3 flutes, and a plug chamfer (MPN 31401108). 3G Electric interprets this demand…
SKU 3G-OTH-284641
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 is a spiral-point tap for multiple materials, specified as 5/16"-24 UNF with H2 / 2B-3B tolerance, 3 flutes, and a plug chamfer (MPN 31401108). 3G Electric interprets this demand and sources the genuine OSG tap, backed by specialist expertise in cutting tools across 14 industrial departments.
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 multiple materials to accept helical wire thread inserts. It is commonly used in aerospace, automotive, and general manufacturing to repair or reinforce tapped holes in aluminum, steel, and cast iron.
What are the specifications of the OSG STI Tap 5/16"-24 UNF?
This OSG STI Tap has a 5/16"-24 UNF thread size, H2 / 2B-3B tolerance, 3 flutes, and a plug chamfer. It is a spiral-point design for through-hole tapping. The manufacturer part number is 31401108.
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 this 5/16"-24 UNF spiral-point tap (MPN 31401108).
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 5/16"-24 UNF. The tap must have STI (Screw Thread Insert) designation to cut oversize threads for the insert. Always verify the insert manufacturer's recommended drill and tap specs.
Used in
Common applications for OSGOSG Products
3G Electric supplies OSG spiral-point sti taps for multiple materials. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.
