OSG Screw Thread Insert STI Tap: Spiral Fute, 1/4"-28 UNF, H2 / 2B-3B, 3 Flute
The OSG Screw Thread Insert STI Tap is a spiral-flute tap designed for steel and stainless steel, with a 1/4"-28 UNF thread size. It features an H2 / 2B-3B tolerance, a bottoming chamfer, and 3 flutes (MPN 0146201).
SKU 3G-OTH-244282
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Product Description
The OSG Screw Thread Insert STI Tap is a spiral-flute tap designed for steel and stainless steel, with a 1/4"-28 UNF thread size. It features an H2 / 2B-3B tolerance, a bottoming chamfer, and 3 flutes (MPN 0146201).
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 an OSG spiral-flute STI tap used for?
An OSG spiral-flute STI tap is used to cut internal threads in steel and stainless steel for screw thread inserts. The spiral-flute design evacuates chips upward, making it ideal for blind-hole applications. This bottoming-chamfer tap (1/4"-28 UNF, H2 / 2B-3B) produces threads that accept STI inserts, commonly used in aerospace, automotive, and industrial maintenance.
What are the specifications of the OSG STI tap 0146201?
The OSG STI tap (MPN 0146201) has a 1/4"-28 UNF thread size, H2 / 2B-3B tolerance class, 3 flutes, and a bottoming chamfer. It is a spiral-flute type designed for steel and stainless steel. The H2 / 2B-3B designation ensures precise thread fit for screw thread inserts in demanding applications.
Where to buy OSG taps in worldwide?
You can source OSG taps worldwide through 3G Electric, a global industrial equipment distributor established in 1990. We handle full logistics, customs clearance, and delivery to any location. Contact us for availability and lead times on the OSG spiral-flute STI tap (MPN 0146201) and other OSG tooling.
How to select the correct OSG STI tap for a job?
To select the correct OSG STI tap, match the thread size (e.g., 1/4"-28 UNF) and tolerance class (H2 / 2B-3B) to your insert requirements. Choose a bottoming chamfer for blind holes or a plug chamfer for through holes. For steel or stainless steel, a spiral-flute design aids chip evacuation. Always verify the tap's material compatibility and coating.
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Common applications for OSGOSG Products
3G Electric supplies OSG spiral-flute sti taps for steel & stainless steel. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.
