OSG 1/4"-20 UNC Spiral-Point STI Tap, H2 / 2B-3B, Plug Chamfer, 3 Flute
The OSG Screw Thread Insert STI Tap (Spiral Point, MPN 1826400) is a 1/4"-20 UNC tap with H2 / 2B-3B tolerance, 3 flutes, and a plug chamfer. Designed for threading holes to accept screw thread inserts, it combines…
SKU 3G-OTH-286982
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Product Description
The OSG Screw Thread Insert STI Tap (Spiral Point, MPN 1826400) is a 1/4"-20 UNC tap with H2 / 2B-3B tolerance, 3 flutes, and a plug chamfer. Designed for threading holes to accept screw thread inserts, it combines OSG's cutting-tool expertise with a spiral-point geometry for efficient chip evacuation. 3G Electric sources this and thousands of other industrial consumables across 14 departments, with specialist depth in cutting tools and precision threading solutions.
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 automotive, aerospace, and general manufacturing to repair or reinforce threads in aluminum, cast iron, and steel components.
What are the specifications of the OSG STI Tap 1826400?
The OSG STI Tap 1826400 is a spiral-point, plug-chamfer tap with a 1/4"-20 UNC thread size and H2 / 2B-3B tolerance class. It has 3 flutes and is designed for through-hole threading. The H2 limit ensures a precise fit for STI inserts in medium-hard materials.
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 1826400 or other STI tap sizes.
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 thread insert you plan to install. For example, the 1/4"-20 UNC tap is for a 1/4"-20 UNC insert. Verify the tap tolerance (H2 / 2B-3B) matches your material hardness and required thread class.
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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.
