hex flat nut ,with different sizs , materials, standards and finishes .

hex  flat  nut

standard : JIS , DIN . AISI, GB .

material : carbon steel , stainless  steel , alloy steel .

class: class4 . class 8, class10.9,class12.9. grade2,grade5,grade8,

finish:plain , black oxide , blue zinc ,yellow zinc , black zinc , nickel and so on.

hex flat nut