Stainless Steel Flat Head Bolt 1)Standard:DIN931,DIN933. 2)Material:SS304,SS316. Stainless Steel Flat Head BoltFeatures:1)Standard:DIN931,DIN933,DIN EN ISO 4014,DIN ... 4017,ASME B18.2.1,JIS B 1180/1181,BS41902)Material:SS304,SS316,SS304L,SS316L,SS201,SS202,SS410,SS430,A2,A4 ... hardware, electronic and electrical appliances,automobiles and so on. stainless steel flat head bolt