80/20 Inc., 13051, 40 Series, Self Aligning Slide-In T-Nut with Ball Spring M5 X .8
M5 x .8 thread. Easy to add to or reposition on an existing frame where t-slot ends are captivated. Ball spring holds the T-nut in position in the T-slot. Easily installed or removed from the slot saving time by avoiding dis-assembly time.