OSG Screw Thread Insert STI Tap: Spiral Point, 7/8"-14 UNF, H4 / 2B-3B, 4 Flute
The OSG Screw Thread Insert STI Tap is a spiral-point tap for multiple materials, featuring a 7/8"-14 UNF thread size, H4 / 2B-3B tolerance, 4 flutes, and a plug chamfer (MPN 31403901).
SKU 3G-OTH-284658
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-point tap for multiple materials, featuring a 7/8"-14 UNF thread size, H4 / 2B-3B tolerance, 4 flutes, and a plug chamfer (MPN 31403901).
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 the OSG Screw Thread Insert STI Tap used for?
The OSG Screw Thread Insert STI Tap is used to pre-tap holes for helical wire thread inserts in multiple materials. It creates threads that accept STI inserts, restoring or strengthening threads in metals and plastics. Common in automotive, aerospace, and general manufacturing where thread repair or reinforcement is needed.
What are the specifications of the OSG STI Tap 31403901?
This OSG STI tap has a UNF thread size of 7/8"-14, with a tolerance of H4 / 2B-3B. It features a spiral-point design, 4 flutes, and a plug chamfer. The manufacturer part number is 31403901. It is designed for tapping holes that will accept screw thread inserts.
Where to buy the OSG STI Tap 31403901 worldwide?
You can source the OSG STI Tap 31403901 through 3G Electric, a global industrial equipment distributor. We handle full logistics, customs clearance, and delivery to worldwide destinations. Contact us for availability and lead time; we provide competitive sourcing for this OSG tap.
How to select the correct OSG STI tap for thread inserts?
Select an OSG STI tap based on the thread size and tolerance required for your insert. For a 7/8"-14 UNF insert, use this H4 / 2B-3B tap. Ensure the tap matches the insert manufacturer's specifications. Use proper tapping speed and lubrication for the workpiece material to achieve accurate threads.
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.
