HEXAGON NUTS DIN- 934, MARKED "S/8/" M3--M52. 2H NUT 1/4"-20----2-1/4"-4.5 HEXAGON NUTS DIN- 934, MARKED"S/8/".DIN-934, ASTM 2H.GRADE - 4, GRADE - 6, GRADE - 8 / GRADE - 2.M3--M52. 1/4"-20--2-1/4"-4.5in Mild Steel, High Tensile Steel, Brass and Stainless Steel.Plain, Zinc Plated / Galvanized< White, Blue-white, Yellow >, Black, Hot.Dip.Galvanizing. NUT