OSG Screw Thread Insert STI Tap: Straight Fute, 1/4"-28 UNF, H2 / 2B-3B, 3 Flute
The OSG Screw Thread Insert STI Tap (Straight Flute) is a general-purpose STI tap for 1/4"-28 UNF threads, with an H2 / 2B-3B tolerance, 3 flutes, and a bottoming chamfer (MPN 1806700). 3G Electric sources this and…
SKU 3G-OTH-261993
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Product Description
The OSG Screw Thread Insert STI Tap (Straight Flute) is a general-purpose STI tap for 1/4"-28 UNF threads, with an H2 / 2B-3B tolerance, 3 flutes, and a bottoming chamfer (MPN 1806700). 3G Electric sources this and thousands of other industrial cutting tools across 14 departments — machining, electrical, power transmission, and more — with specialist depth in combustion, pumps, and controls as an authorised distributor for brands like OSG, Schneider, ABB, and Siemens.
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 a workpiece before installing a helical wire thread insert. It is commonly applied in aerospace, automotive, and general manufacturing where thread repair or reinforcement is needed in softer materials like aluminum or cast iron.
What are the specifications of the OSG STI Tap 1/4"-28 UNF?
This OSG STI Tap has a 1/4"-28 UNF thread size, H2 / 2B-3B tolerance, 3 flutes, and a bottoming chamfer. The manufacturer part number is 1806700. It is designed for general purpose use with screw thread inserts, producing threads that accept STI-series inserts.
Where to buy OSG STI Taps worldwide?
You can source OSG STI Taps 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 on the OSG 1/4"-28 UNF STI Tap (MPN 1806700).
How to select the correct OSG STI Tap for a thread insert?
Select an OSG STI Tap that matches the thread size and pitch of the insert you plan to install. For a 1/4"-28 UNF insert, use this STI Tap with H2 / 2B-3B tolerance. Ensure the chamfer type (bottoming for blind holes) and flute count suit your material and hole configuration.
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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.
