GB国标-螺母-非金属嵌件六角法兰面锁紧螺母 细牙
GB /T 6183.2-2000（ | ISO 12125：1997 ）
revailing torque tye hexagon nuts with flange(with non-metallic in sert)with fine itch thread
非金属嵌件六角法兰面锁紧螺母 细牙
revailing torque tye hexagon nuts with flange(with non-metallic in sert)with fine itch thread
非金属嵌件六角法兰面锁紧螺母 细牙
