产品描述SCREWS AND BOLTS, OF IRON OR STEEL WHETHER OR NOT WITH THEIR NUTS AND WASHERS , WITH HEADS (EXCL. WITH SLOTTED, CROSS-RECESSED OR HEXAGONAL HEAD; WOOD SCREWS, SELF-TAPPING SCREWS AND SCREWS AND BOLTS FOR FIXING RAILWAY TRACK CONSTRUCTION MATERIAL, SCREW HOOKS AND SCREW RINGS)[展开]