Set Of Fifteen Five Sixteenth Inch Eighteen Thread T Nuts Spring Loaded With Ball Bearings In Silver Zinc Plated Carbon Steel For 4040 Aluminum Extrusions And Slot Eight Systems Ideal For DIY Projects And Heavy Duty Aluminum Framing

15-Pack Spring-Loaded T-Nuts for 4040 Aluminum Extrusions
✔️ 15 pcs set, 5/16-18 thread, 0.83 in length, zinc plating for corrosion resistance

These spring-loaded T-nuts are designed to lock securely into 4040 Series and Slot 8 aluminum extrusions, making quick, strong frame assembly easy in DIY projects or industrial rigs.

✅ Thread size 5/16-18
✅ Material: carbon steel with silver zinc plating
✅ Fits 4040 Series and Slot 8 extrusions
✅ Spring-loaded with ball bearings for quick lock; dimensions 21 mm length, 8 mm bottom width, 13.3 mm overall width (0.83 in length, 0.32 in bottom width, 0.52 in overall width)
✅ Includes 15 pieces in a plastic storage box

💡 What is a T-nut used for in aluminum extrusion assemblies?

Here's a handy overview to help you decide if this fits your build:

- Provides a secure mounting point inside aluminum extrusion channels - Works with 5/16-18 bolts for sturdy, adjustable joints - Ideal for DIY rigs, CNC frames, machine enclosures, and heavy-duty shelving