... material:Carbon steel,Alloy steel,stainless steel2. grade of HEX BOLT:Metric standerd: Grade4.6, Grade4.8, Grade5.6, Grade5 ... .9Inch standard:Grade2, Grade5, Grade8,B7.3.Demension:Metric,size from 4mm-72mm,lnch size from 1/8 ... 6lack,DACRO coating,ect.7. Packing of HEX BOLT :Generral packing 15-25Kg per Caton or Bag. ... or Bag per a Pallet,or accoding requireProduct namestud bolt & nutSize1/4,5/16,3/8,M6,M8 ...