平头铆螺母(FLAT HEAD RIVET NUTS)产品规格SIZEDDk0.3K0.2L0.3铆接厚度t铆后长度 h(参考)NM3M35.04.97.00.88.50.51.55.0NM4M46.05.99.00.811.00.51.56.0NM5M57.06.910.01.013.00.52.07.0NM6M69.08.912.71.512.00.51.57.015.00.52.09.0NM8M811.010.915.01.517.00.82.510.5NM10M1013.012.917.01.819.80.83.012.522.80.83.013.5NM12M1215.014.918.01.822.50.