Acrow BSD Insert Holder Extension – B.BSD31-090 (Ø50–60 mm) 16 piece Parallel Bars External Thread Repair – Restores

External Thread Repair – Restores fine-pitch MF24 threads

Insize Limit Micrometer 3235-2

controlled cutting and shaping in various applications

the angle of the lead being around 18 degrees per side

and Solid Carbide threadmills delivering unmatched accuracy

Acrow BSD Insert Holder Extension – B.BSD31-090 (Ø50–60 mm) 16 piece Parallel Bars External Thread Repair – RestoresAcrow BSD Insert Holder Extension B. BSD31 090 The Acrow B. BSD31 090 Insert Holder Extension is a high precision component engineered to extend the working range of Acrow BSD31 boring heads. Made from hardened alloy steel and precision ground to exact tolerances, it delivers excellent rigidity, balance, and concentricity during deep boring and finishing operations. This model allows both forward and back boring, providing maximum flexibility for