OSG Screw Thread Insert STI Tap: Spiral Point, 5/8"-18 UNF, H3 / 2B-3B, 4 Flute
The OSG Screw Thread Insert STI Tap is a spiral-point tap for multiple materials, specified as 5/8"-18 UNF with an H3 / 2B-3B tolerance, 4 flutes, and a plug chamfer (MPN 31403001). 3G Electric interprets this demand…
SKU 3G-OTH-284704
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Product Description
The OSG Screw Thread Insert STI Tap is a spiral-point tap for multiple materials, specified as 5/8"-18 UNF with an H3 / 2B-3B tolerance, 4 flutes, and a plug chamfer (MPN 31403001). 3G Electric interprets this demand and sources the genuine OSG tool, backed by specialist expertise in industrial equipment across 14 departments.
Frequently Asked Questions
What is the OSG Screw Thread Insert STI Tap used for?
The OSG Screw Thread Insert STI Tap is used to cut internal threads in multiple materials for installing screw thread inserts. It is commonly applied in aerospace, automotive, and general manufacturing where strong, replaceable threads are required in softer base materials.
What are the specifications of the OSG STI Tap 31403001?
This OSG STI Tap has a UNF thread size of 5/8"-18, a tolerance of H3 / 2B-3B, 4 flutes, and a plug chamfer. It is a spiral-point design for efficient chip evacuation. The manufacturer part number is 31403001.
Where to buy the OSG STI Tap 31403001 worldwide?
You can source the OSG STI Tap 31403001 through 3G Electric, a global industrial equipment distributor. We handle full logistics, customs clearance, and delivery to worldwide destinations, ensuring reliable supply for your operations.
How to select the correct OSG STI tap for a thread insert?
Select an OSG STI tap based on the thread size and tolerance required for the insert. For a 5/8"-18 UNF insert, use this H3 / 2B-3B tap. Ensure the tap matches the insert manufacturer's specifications and the base material to achieve proper thread fit and strength.
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.















