m8-m36,镀锌8级六角薄螺母薄螺帽,扁螺母粗牙,gb6172,gb54,din439
B-XH I-XH I-XH I-XH I-XH I-XH O O O O O O O B-HCCX I-HCCX I-HCCX B-HCCX I-HCCX I-HCCX O B-HCCX I-HCCX I-HCCX O O O B-XH I-XH I-XH I-XH I-XH I-XH O B-XH I-XH I-XH I-XH O B-XH I-XH I-XH I-XH I-XH I-XH