OSG Screw Thread Insert STI Tap: Spiral Point, 5/8"-11 UNC, H4 / 2B-3B, 3 Flute
The OSG Screw Thread Insert STI Tap is a spiral-point tap designed for threading holes to accept screw thread inserts. This 5/8"-11 UNC tap features an H4 / 2B-3B tolerance, a plug chamfer, and 3 flutes (MPN…
SKU 3G-OTH-287000
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Product Description
The OSG Screw Thread Insert STI Tap is a spiral-point tap designed for threading holes to accept screw thread inserts. This 5/8"-11 UNC tap features an H4 / 2B-3B tolerance, a plug chamfer, and 3 flutes (MPN 12501400). 3G Electric interprets your demand for this precision threading tool, sources it from OSG, and supports your application with specialist expertise 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 is used to cut internal threads in pre-drilled holes for installing helical wire thread inserts. It is commonly applied in aerospace, automotive, and industrial maintenance to repair or reinforce threads in aluminum, cast iron, and steel components.
What are the specifications of the OSG STI Tap 12501400?
The OSG STI Tap 12501400 is a spiral-point design with a 5/8"-11 UNC thread, H4 / 2B-3B tolerance, 3 flutes, and a plug chamfer. It is designed for thread insert installation and is manufactured by OSG under MPN 12501400.
Where to buy OSG STI Tap 12501400 worldwide?
You can source the OSG STI Tap 12501400 worldwide through 3G Electric, a global industrial equipment distributor. We handle full logistics, customs clearance, and delivery to your location. Contact us for availability and lead time.
How to select the correct OSG STI tap size?
To select the correct OSG STI tap, match the tap thread size and pitch to the insert's internal thread requirement. For example, the 5/8"-11 UNC STI tap is used with corresponding thread inserts. Always verify the hole size and tolerance class (e.g., H4 / 2B-3B) per OSG recommendations.
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Common applications for OSGOSG Products
3G Electric supplies OSG spiral-point sti taps. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.















