Flange Nut

GB flange nut is hex with washer side, mainly in the field of machinery and equipment, construction, automobile, railway and other industries. Nut mechanical property has grade 4, grade 6, grade 8 and grade 10. GB flange nut covers the dimensional requirments of metric series hex nut. The common standard of GB flange nut is GB/T6177.1 . Its size from M3-M64 diameter.