Our Slide-In Economy T-Nut with 5/16-18 Offset Thread is a cost-effective fastening option specifically designed for 15 Series aluminum profiles, such as the standard 1.5-inch based extrusions. It is officially compatible with 80/20 Part #3278 and is ideal for corner connections because its offset design allows for clean joints without extending beyond the profile length. 
 
We recommend positioning the pilot projection down into the T-slot during installation. This prevents uneven connections or "crashing" during the fastening process, ensuring the nut seats properly against the extrusion wall.
 
Product Specifications
Thread Detail: Features a 5/16-18 thread with a pilot projection that adds threading depth for increased strength.
Material & Finish: Made from carbon steel with a black zinc finish.
Installation: Must be loaded from the profile ends (slide-in) rather than dropped in from the side.
Dimensions: 0.984" (Length) x 0.638" (Width) x 0.222" (Height).
 
Key Feature: Includes a pilot thread projection that increases threading depth for extra strength and assists in alignment within the T-slot. Manufacturer recommend positioning the pilot projection down in the T-slot to avoid crashing and uneven connections.