... head wood screws 1/4*2-3/4 (+3 Cr black) 1.standard:ANSI 2.material:35ACr 3.grade:5 4.finishing:+3 Cr ,black zinc ANSI ... :1/4-1''3.Standards:DIN ,ANSI/ASME,BS,GB,JIS,Non-standard,JB/T4.Surface:plain,zinc plated,black oxide,hot dip ... galv.etc.5.Packing:in bulk,15-25kgs per carton,then on ...