OSG Screw Thread Insert STI Tap: Spiral Fute, 5/16"-24 UNF, H2 / 2B-3B, 3 Flute
The OSG Screw Thread Insert STI Tap (SKU 33ZF49, MPN 8013600) is a spiral-flute tap designed for 5/16"-24 UNF threads. It features a bottoming chamfer, H2 / 2B-3B tolerance, and 3 flutes, enabling chip evacuation in…
SKU 3G-OTH-273418
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Product Description
The OSG Screw Thread Insert STI Tap (SKU 33ZF49, MPN 8013600) is a spiral-flute tap designed for 5/16"-24 UNF threads. It features a bottoming chamfer, H2 / 2B-3B tolerance, and 3 flutes, enabling chip evacuation in through-hole or blind-hole applications. 3G Electric interprets your demand for this precision threading tool, sources it as an authorised distributor, and supports your operation across 14 industrial departments — with specialist depth in combustion, pumps, and controls.
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 a pre-drilled hole for installing screw thread inserts. It is designed for bottoming chamfer applications, producing threads to H2 / 2B-3B tolerance in materials like aluminum and steel.
What are the specifications of the OSG 8013600 STI tap?
The OSG 8013600 is a spiral-flute STI tap with UNF thread size 5/16"-24, H2 / 2B-3B tolerance, 3 flutes, and a bottoming chamfer. It is designed for threading holes that will accept screw thread 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.
How to select the correct OSG STI tap for an application?
Select an OSG STI tap based on thread size, pitch, and tolerance class. For 5/16"-24 UNF threads requiring a bottoming chamfer, the OSG 8013600 with H2 / 2B-3B tolerance is suitable. Ensure the tap matches the insert manufacturer's specifications.
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3G Electric supplies OSG spiral-flute sti taps. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.















