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GB国标-螺母-1型非金属嵌件六角锁紧螺母

GB /T 889.1-2000( 代替 GB/T 889-1986 | ISO 7040:1997 )
revailing torque tye hexagon nuts(with non-metallic in sert),style 1
1型非金属嵌件六角锁紧螺母