Smeg SA9066X 90cm Oven Door Hinge - Part # 931330551Smeg Oven Door Hinge Assembly. Genuine Smeg Part No. 931330551. Hinge has "41" stamped on the small hinge arm and "B4" stamped on the large hinge arm. The mounting screw hole is recessed into the front of the hinge bracket. When looking at the side of the hinge, the cutaway section near the spring where the frame reduces in size, is 5mm high and the bracket is 15. 2mm thick. Suits some Smeg 90cm wide ovens including the following models: AP91CKDW1,