OSG Screw Thread Insert STI Tap: Straight Fute, 7/8"-9 UNC, H5 / 2B-3B, 4 Flute
The OSG Screw Thread Insert STI Tap is a general-purpose STI tap with a straight flute design, specified as 7/8"-9 UNC, H5 / 2B-3B tolerance, 4 flutes, and a bottoming chamfer (MPN 12604200). 3G Electric sources this…
SKU 3G-OTH-262090
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Product Description
The OSG Screw Thread Insert STI Tap is a general-purpose STI tap with a straight flute design, specified as 7/8"-9 UNC, H5 / 2B-3B tolerance, 4 flutes, and a bottoming chamfer (MPN 12604200). 3G Electric sources this genuine OSG tool as part of our industrial supply across 14 departments, with specialist expertise in combustion, pumps, and controls ensuring accurate sourcing and support for your threading applications.
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 metal or plastic for installing helical screw thread inserts. It is commonly applied in aerospace, automotive, and general manufacturing where thread repair or reinforcement is needed.
What are the specifications of the OSG STI Tap 12604200?
This OSG STI Tap has a UNC thread size of 7/8"-9, with a tolerance of H5 / 2B-3B. It features 4 flutes, a straight flute design, and a bottoming chamfer. The manufacturer part number is 12604200, and it is designed for general purpose thread cutting.
Where to buy OSG STI Tap 12604200 worldwide?
You can source the OSG STI Tap 12604200 through 3G Electric, a global industrial equipment distributor. We handle full logistics, customs clearance, and delivery to worldwide destinations, ensuring you receive the correct tap for your threading application.
How to select the correct OSG STI Tap for thread inserts?
To select the correct OSG STI Tap, match the tap thread size and pitch to the insert's specifications. For a 7/8"-9 UNC insert, use this tap with H5 tolerance for 2B-3B class threads. Ensure the chamfer type (bottoming for blind holes) and flute count suit your material and hole depth.
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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.















