INSERTA^® IFRA 90° Flange 4-Bolt Rotational Retaining Adapter provide the means to retain other INSERTA^® products in a compact assembly with socket head threaded fasteners. These retainers also provide the means for one to rotate the S.A.E 4 bolt-port pattern and flow path plane 90°. These rotational retainers offer one the opportunity to convert from a Code 62 to a Code 61 flange port as well as being able to reduce the port size.