Drop Forged Eye Nut 1.railways, highways, bridges, plants 2.material, ... steel 10.9 3.Certificate,Onsite ChecK 5.M4-M30 Drop Forged Eye Nut1.Bolt Size,M4-M302.Bolt Material,stainless ... -M30.Applicationrailways, highways, bridges, plants,etc.gradecarbon stseel 10.9 12.9FactoryNingBoOptionMartensite and Ferrite C1 C2 C41)MartensiteAustenite(C>=1%) + quench ...