AVAILABLE IN M3, M4, M5, M6 & M8 THREAD SIZES FOR 20, 30, 40 & 45 Series Aluminium Profiles. THESE SQUARE T NUTS CAN BE USED INTO THE PROFILE SLOT ONLY PRE ASSEMBLY.OF THE BUILD. MAINLY USED FOR ALUMINIUM EXTRUSION PROFILES MAINLY USED TO BUILD CNC, 3D PRINTER AND VARIETY OF OTHER MODULAR BUILDS.
eBay