Description of details as below: Our main products are hex bolts ,hex nuts ,anchor bolts ,threaded rod,flat washer and spring washer. Size Standard Material Grade Surface Packing M6 DIN933 C1008 3.6 Yellow zinc In bulk M8-M20 DIN931 C1010 4.6 Blue zinc In 25kg carton M22 DIN960 C1020 4.8 White zinc In 50kg gunny sack M24 DIN961 C1035 5.6 Black Carton in pallet M27 DIN7990 C1045 5.8 Plain Bag in pallet M30 ISO Q235 6.8 H.D.G In ton bags M33 BS916 Q195 8.8 M36 ASTM 35K 10.9 1)hex bolt DIN933/DIN931 ISO4017/ISO4014,DIN960/DIN961 2)size:M6-M45,length:12mm-300mm 3)grade:4.6 4.8 5.6 5.8 6.8 8.8 10.9 4)materail:C1010, Q195,Q235,35#,45# 5)surface: plain, black, zinc plated(yellow,blue) ,HDG 6)packing:25kg/carton,bulking,36carton/pallet 4 boxes/carton,small boxes 36carton/pallet 7)details size: Product name:DIN933/DIN601/ISO4017 hex head bolt Grade:4.6 4.8 5.6 5.8 6.8 Size:M6*16-50 M8*20-100 M10*20-100 M12*20-100 M14*30-100 M16*30-100 M18*40-100 M20*40-100 M22*50-100 M27*50-100 M30*50-100 M36*50-100 Product name:DIN931/DIN960/ISO4014 hex head bolt Grade: 4.6 4.8 5.6 5.8 6.8,8.8 Finish:plain,black,zinc plated(yellow,blue ) ,HDG. Size:M8*55-120 M10*60-120 M12*60-120 MM14*55-120 M16*60-170 M18*70-160 M20*70-170 M22*80-220 M24*80-250 M27*90-270 M30*90-300 M36*90-300 8)manufacturer brief: Handan RuiQaing fasteners manufacturing Co.,Ltd. Is a private corporation,which is specialized in producing and selling fasteners. The company was established in 1999,located in the west of Yongnian-the biggest fasteners manufacturing basement in China. Our factory has passed ISO9001:2000 international quality system. Everyone in RuiQiang fasteners hold the idea that the quality of the products is the life of corporation,the service is based of corporation.We make the good quality and provide the good service.We always invest to improve the technology and the quality to meet the demand of the market WELCOME TO US!!!