... DIN931,DIN934,ASTM 2.Bolt size:M3-M56 3.Bolt material:Carbon steel,iron,stainless steel 4.RoHS,SGS,Bolt We could make production ... with 24 hours.HQ double bolt clamp,bolt certificate (RoHS,SGS) Specification: Products Nam: bolt,eyelet bolt,hex bolt,flange bolt,stud bolts,u bolts, ... DIN934,--ASTM A325 A490 A449 A307 A394 etc. Material:: Stainless steel,Carbon steel,iron bolt AISI 1018 etc. Grade: 4.8-12 ...