Prepare 2 bolts assembly by inserting lock washer (#D), then flat washer (#E) onto bolts (#C). Align the chair seat (#2) to the holes of the chair back (#1). Secure the 2 holes with bolts (#C). DO NOT TIGHTEN ALL BOLTS UNTIL ASSEMBLY IS COMPLETED. Prepare 4 bolts assembly by inserting lock washer (#D), then flat washer (#E) onto bolts (#A). Secure corner holes of the seat (#2) to chair back (#1) with bolts (#A).