... 1.standard:astm a193 b7Size range: 2.Nuts:6mm to100mm (1" to 4") 3.bolt:diameter ... :6 mm to 52 mm bicycle nuts boltsSize range: Nuts : 6mm to 100 mm (1" to 4") ... manufacturing range : Nuts: h.t. hex nuts, astm heavy series (2h) nuts, extra long nuts, castle nuts, slotted nuts, coupling nuts, nylon nuts, assembly nuts, flange nuts, & all ... size range: m-6 to m-52 bicycle nuts bolts