Modified truss washer head screw

1. Standard: EN ISO 15480(DIN7504)2. Length: 13mm-280mm1/2~113. Dia: 3.5mm-6.3mm(#6~#14)4. Points: PT. 1-PT. 55. Surface finish: A)White, yellow or black zin, B)Black or gray phosphor, C)DAKROMETD)RUSPERTE)GeometF)MagniG)Black OxideH)NickelG)Head paintedH)Electrophoretic Paint 6. Packing: Cartons, nylon boxes, wood box, small box, plastic boxDIN7504K, SAE J78, ISO15480, ISO15481, ISO15482, ISO15483, Pan Framing Head Self Drilling and Tapping Roofing Screws;