... 3.Standard: DIN934, ISO4032, ANSI4.Certificate: ISO9001:2008Carbon Steel hex nutSpecification1. Standard: DIN, ANSI B18.2.1and ISO standard. 2 ... . Material: Carbon steel.3. Grade of hex nut: Grade 4.8, Grade6.8, Grade8.8, Grade10.9, Grade12.9. Inch standard: Grade2 ... :Carbon steel, Q195, 35KNut Grade:Class4.8, 6.8, 8.8, 10.8and12.9; inch grade:gr2 and gr5Surface treatment:Plain, zinc plated, yellow ...