柄类型
smooth, Ring, Barbed, Fluted, 螺旋刀
螺丝头类型
平板型, Cupped, 格子交错, 双排, 布拉德, cap
Surface treatment
Zinc Plated ,Polished,hot-dip galvanizing
Material
Carbon Steel,stainless steel,iron,etc
Techology
Tail hole machine,Thread rolling machine
Color
Silvery,white,black,golden
Function
Electrical equipment,Light industry products
Line of business
screw,spring,stamping,shaft,etc