... .1~PT.55,Surface finish:---a) White,yellow or black zinc,---b) Black or gray phosphor,---c) DAKROMET,---d) RUSPERT,---e) Geomet ... ,---f) Magni,---g) Black Oxide,---h) Nickel ---g) Head painted---h) Electrophoretic Paint6,Packing ... J78,ISO 15480, ISO 15481, ISO 15482, ISO 15483,Bi-Metal Self Drilling and Tapping Roofing Screws;DIN7504K,SAE J78,ISO ...