OSG Screw Thread Insert STI Tap: Straight Fute, 9/16"-18 UNF, H3 / 2B-3B, 4 Flute
The OSG Screw Thread Insert STI Tap (SKU 33ZK39, MPN 12602000) is a general-purpose STI tap with a straight flute design, sized 9/16"-18 UNF. It features an H3 / 2B-3B tolerance class, a bottoming chamfer, and 4…
SKU 3G-OTH-262045
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Product Description
The OSG Screw Thread Insert STI Tap (SKU 33ZK39, MPN 12602000) is a general-purpose STI tap with a straight flute design, sized 9/16"-18 UNF. It features an H3 / 2B-3B tolerance class, a bottoming chamfer, and 4 flutes, making it suitable for threading applications requiring screw thread inserts.
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 a pre-drilled hole before installing a helical wire thread insert. It is commonly applied in aerospace, automotive, and general manufacturing to repair or reinforce threads in softer materials like aluminum or cast iron.
What are the specifications of the OSG STI Tap 12602000?
The OSG STI Tap 12602000 is a straight flute, bottoming chamfer tap with a 9/16"-18 UNF thread size. It has 4 flutes and a thread class of H3 / 2B-3B. This general-purpose tap is designed for use with screw thread inserts and is manufactured by OSG.
Where to buy OSG STI Tap 12602000 worldwide?
You can source the OSG STI Tap 12602000 worldwide through 3G Electric. As a global industrial equipment distributor, 3G Electric handles full logistics, customs clearance, and delivery to your location. Contact us for availability and lead time on this OSG tap.
How to select the correct OSG STI tap for a thread repair?
To select the correct OSG STI tap, match the tap's thread size and pitch to the insert you plan to use. For a 9/16"-18 UNF insert, choose a tap with the same designation. Ensure the tap has a bottoming chamfer if you need threads close to the bottom of a blind hole.
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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.















