Heavy Duty 15 Series Bolt Assembly Kit With 5/16-18 Flanged Button Head Socket Cap Screws And Slide-In Economy T Nut T Slot Hardware 0.687 Inch Length Steel With Black Zinc Finish 100 Pack

15 Series Bolt Kit with 5/16-18 screws & T nuts
✔️ 100-pack with 3330 screws and 3278 T-nuts, 0.687 in length

This heavy-duty bolt assembly kit is designed for 15 Series aluminum extrusions and standard 1.5" base tracks. It provides reliable mounting hardware to fasten brackets, plates, and accessories to T-slot tracks in DIY machines, workstations, and shop setups.

✅ 3330 - 5/16-18 x 0.687" flanged button head socket cap screws, 3/16 in hex drive
✅ 3278 - 5/16-18 slide-in economy T-nuts, offset thread, fits 15 Series tracks
✅ Steel with black zinc finish for corrosion resistance
✅ 0.66" flange head diameter; 0.687" screw length; 5/16-18 thread
✅ 100-piece pack for bulk projects

💡 What is a bolt assembly kit for aluminum extrusion used for in 15 Series systems? It's handy hardware for mounting brackets and plates to the T-slot tracks that run on extrusion profiles. - Handy for quick bracket mounting to 15 Series T-slot tracks - Includes flanged screws and slide-in T-nuts for secure assemblies - Black zinc finish resists corrosion in workshop environments