we specilize in the production of hex bolts and nuts.The standards of the bolts include DIN558,DIN601,DIN931,DIN933,DIN960,DIN961,DIN7990,DIN912 ,ANSI and BS covering Gr4.8,6.8,8.8,10.9.On the other hand,the standards of the nuts include DIN934,DIN985,DIN555,DIN982,DIN6914 covering Gr2,5,8. Should you be interested in any of the items,please do not hesitate to contact us. Your any inquiry shall be given great consideration.