hexagon nut 1)Head tpye:HWH,HFH,PAN HEAD,FLAT HEAD,BUGLE HEAD ect. 2)Size:#6,#7,#8,#10,#12,#14 hexagon nut SUPPLIER:Material:carbon steel C1022 or C1018Finish:zinc plated,painting,dacromat,RuspertSize:#6,#7,#8,#10,#12,#14Length:13-240mmStandard:IFI,DIN,UNIAdvantages:good quality,large production capacity,timely delivery,competitive price hexagon nut