螺丝头类型
平底锅, 大圆扁头, 平板型, 椭圆形, 圆形, 六角, 芝士, 包边, OEM
factory type
customization or standard hardware
various head types
hex ,hex socket,round,ball etc
Size
m1.6 m2 m3 m4 m5 m6 m8 etc
Material
carbon steel,stainless steel,brass etc
Surface treatment
zinc/nickle/brass plating,black anodizing,hardened etc