Fish bolt /track bolt Item name: fish bolt /track bolt Type: eliptical neck and oval neck Raw material: q235, 35k, 45#, 40mn2, 20 mnsi, 35crmo, 40crmo Grade: 4.6 4.8 5.6 8.8 10.9 12.9 Standard: uic din bs astm Surface: plain(oil), black paint, color paint, hdg, zinc plate Packing: 25kg per double-layer woven bag+free fumigation wooden pallet or as customer required 25kg per double-layer woven bag+free fumigation wooden pallet or as customer required