Used with the corresponding bolt, these t-nuts are used with 80/20 aluminum joining plates and brackets and are connected to the t-slot grove of extrusions. 80/20 hardware helps to engage the two-degree lock feature on 80/20 aluminum extrusions, which enables the connections to remain vibration resistant and strong. All 8020 t-nuts offer strength and stability and are durable and can be reused many times over. Slide-in T-Nut 1/4-20 Thread (25 Pack) Compatible with 80/20 15 Series 3202 tnut 1515, 1530, 4040, 1444-25 SKU: 1444-25 Made out of 1215 steel with a black zinc finish Using 8020 t-nuts with bolts to attach your brackets and plates requires no machining to utilize, saving you time and money. Steel T-Nuts for Aluminum Extrusions 80/20 offers a myriad of options for t-nuts including different threads, finishes, and sizes. 15 SERIES | ALUMINUM T-SLOT FRAMING 80/20 Compatible Hardware 40-3202, 40 Series 1/4-20 Standard Slide-in T-Nut Steel (10 T Track Nuts