ITEM NAME:100pcs Choi zinc Countersunk Head Blind Rivet Nuts Rivnuts Nutserts M4/5/6/ A4F1 100pcs Choi zinc Countersunk Head Blind Rivet Nuts Rivnuts Nutserts M4/5/6/ A4F1 100% Brand New Threaded rivet nut inserts. Application : Metal, plastic and fibreglass (0.5mm-4.0 mm thick). Firm riveting and high efficiency. Large Flange, Knurled Body. Specifications: Material: Choi zinc Size: M4, M5, M6, and M8 （mixed pack） Strength: Class 4.8 Note: Each
