High Quality Bolts And Nuts Material: 1.Stainless Steel:SUS302,SUS304,SUS316,SUS201,etc 2.Carbon steel:1018,1022 etc 3.Alloy Steel:Titanium Alloy,10B21,435,40Cr etc 4.Aluminum or Aluminum Alloy 5.Brass Hardness: Vickers hardness: HV350-450; HV400-550; HV450-700; Rockwell hardness: Grade8.8 HRC22-32; Grade10.9 HRC32-39; Grade12.9 HRC39-44 Surface treatment: Zinc,Nickel,Bronze,Copper,Phosphate, Oxidation black, Passivation, Tin,Dacromet,Gold,Chrome,Sliver, Phosphonrization,Zinc-nickelalloy plated etc. Standard: DIN,GB,ISO,ANSI,BS,JIS etc ISO9001: RoHS, Meet the EU standards. Packaging: Ordinary […]
