The nominal diameter for BA 4 is approx
The design with reduced shank makes it possible to use drills that have a larger diameter than the matching drill chuck
With this BaerCoil® thread repair set it is possible to repair through hole threads and blind hole threads in MF 24 x 1
5 times 20 mm=30 mm
BaerCoil Thread Repair Kit UNF 10 x 32
BaerFix Thread Repair Kit M 2,5 x 0,45 like timesert baercoil baer coil kit unf 9/16 x 18 The nominal diameter for BABaerFix Thread Repair Kit M 4 type: ECO Applicable for materials like: aluminum, light alloys, nonferrous metals, brass, bronze, cast iron, synthetic materials, laminated plastics, hardwoods, plastics ect. For very hard and strong materials, it's recommended to tap the thread before the installation of the BaerFix insert. (You can find screw lockings at accessories) inside thread: M 2,5 x 0,45 Length: 6 mm External Thread: M 4. 5 x 0. 5 kit content: 1