NF-004 is a type of fastener used to secure a variety of materials together. It is a metal, non-permanent clip that attaches easily without the use of tools, and can be unlocked to remove or replace components. The NF-004 clip is most commonly used to secure lighting fixtures, roof and siding panels, metal parts and mechanical components. The clip is compatible with metal, plastic and composite components, and is available in sizes ranging from 0.3mm to 6.5mm. This versatile fastening clip is strong, durable, and can be used for indoor and outdoor applications.