... internal thread1.Standards:DIN ,ANSI/ASME,BS,GB,JIS,Non-standard2.Metail:Carbon steel,stainless steel,alloy steel.3. ... etc.Professional production and processing: nut, nuts, pin shaft, stud bolt,screws, bolts, non-standard bolt, non-standard nut, non-standard screws, egg ... and hexagonal wood screws, etc. We can also process non-standardfasteners according to drawing.Since the establishment of Jinrui, ...