| Harmonised Commodity Description and Coding System (HS) - level 3 - Heading | 
                    7318 | 
                    Screws, bolts, nuts, coach screws, screw hooks, rivets, cotters, cotter pins, washers, incl. spring washers, and similar articles, of iron or steel (excl. lag screws, stoppers, plugs and the like, threaded) | 
                  
                
                  
                    | Combined nomenclature 8 digits | 
                    73181520 | 
                    Screws and bolts, of iron or steel "whether or not with their nuts and washers", for fixing railway track construction material (excl. coach screws) | 
                  
                
                  
                    | Combined nomenclature 8 digits | 
                    73181535 | 
                    Screws and bolts, of stainless steel "whether or not with their nuts and washers", without heads (excl. screws and bolts for fixing railway track construction material) | 
                  
                
                  
                    | Combined nomenclature 8 digits | 
                    73181542 | 
                    Screws and bolts, of iron or steel other than stainless "whether or not with their nuts and washers", without heads, with a tensile strength of < 800 MPa (excl. screws and bolts for fixing railway track construction material) | 
                  
                
                  
                    | Combined nomenclature 8 digits | 
                    73181548 | 
                    Screws and bolts, of iron or steel other than stainless "whether or not with their nuts and washers", without heads, with a tensile strength of >= 800 MPa (excl. screws and bolts for fixing railway track construction material) | 
                  
                
                  
                    | Combined nomenclature 8 digits | 
                    73181552 | 
                    Screws and bolts, of stainless steel "whether or not with their nuts and washers", with slotted or cross-recessed heads (excl. wood screws and self-tapping screws) | 
                  
                
                  
                    | Combined nomenclature 8 digits | 
                    73181558 | 
                    Screws and bolts, of iron or steel other than stainless "whether or not with their nuts and washers", with slotted or cross-recessed heads (excl. wood screws and self-tapping screws) | 
                  
                
                  
                    | Combined nomenclature 8 digits | 
                    73181562 | 
                    Hexagonal-socket head screws and bolts, of stainless steel "whether or not with their nuts and washers" (excl. wood screws, self-tapping screws and screws and bolts for fixing railway track construction material) | 
                  
                
                  
                    | Combined nomenclature 8 digits | 
                    73181568 | 
                    Hexagonal-socket head screws and bolts, of iron or steel other than stainless "whether or not with their nuts and washers" (excl. wood screws, self-tapping screws and screws and bolts for fixing railway track construction material) | 
                  
                
                  
                    | Combined nomenclature 8 digits | 
                    73181575 | 
                    Hexagon screws and bolts, of stainless steel "whether or not with their nuts and washers" (excl. with socket head, wood screws, self-tapping screws and screws and bolts for fixing railway track construction material) | 
                  
                
                  
                    | Combined nomenclature 8 digits | 
                    73181582 | 
                    Hexagon screws and bolts, of iron or steel other than stainless "whether or not with their nuts and washers", with a tensile strength of < 800 MPa (excl. with socket head, wood screws, self-tapping screws and screws and bolts for fixing railway track construction material) | 
                  
                
                  
                    | Combined nomenclature 8 digits | 
                    73181588 | 
                    Hexagon screws and bolts, of iron or steel other than stainless "whether or not with their nuts and washers", with a tensile strength of => 800 MPa (excl. with socket head, wood screws, self-tapping screws and screws and bolts for fixing railway track construction material) | 
                  
                
                  
                    | Combined nomenclature 8 digits | 
                    73181595 | 
                    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) |