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M3 M4 M5 M6 T-shape block sliding nut hammer spring ball for 20 30 40 45 series aluminium profile extrusion slot track
About this item
- The zinc plating prevents rust and is durable.
- These nuts are used to make threaded sockets made of wood.
- The serrated design allows you to extend the surface between nut and workpiece, non-slip and easy to lock.
- Use is easy: simply hit these nuts into suitable size holes to fix the pins.
- Suitable for indoor and outdoor use. Used for wood climbing walls, plywood chipboard, speaker board, wooden furniture and other woodworking projects.