The Bosch Backing Flange Nut is a precision clamping component designed to secure grinding and cutting discs on compatible Bosch angle grinders and concrete grinders. Suitable for discs with a diameter of 115mm to 150mm manufactured after August 1990, this backing flange provides a reliable, stable mount for your abrasive discs during operation. It features a 22.23mm bore and is compatible with Bosch machines fitted with an M14 thread and locking nut. This is a genuine Bosch replacement or spare part, making it the correct choice when replacing a worn or damaged flange on a compatible grinder. It is ideal for contractors and tradespeople who need a dependable, manufacturer-matched component to keep their grinder operating safely and efficiently. Features and Benefits: • Clamps discs with 115mm to 150mm diameter manufactured after August 1990 • 22.23mm bore for use with concrete grinders and angle grinders with locking nut • Compatible with Bosch grinders with an M14 thread Specifications: Bore Diameter: 22.23mm Compatible Disc Diameter: 115mm to 150mm Thread Type: M14 Net Weight: 0.064kg