... Nuts : 6mm to 100 mm (1" to 4") bolt : diameter: 6 mm to 52 mm length: 20 mm to 400 mm studs ... 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 parts ... friction grip bolts, etc. Studs: double ended & full threaded astm a193 b7 studs. size range: m-6 to m-52 bicycle nuts bolts