External Aluminium Doors,Aluminium Front Doors For Homes,Aluminium Bifold Exterior Doors,Aluminium Exterior Doors Guangdong JMA Aluminium Profile Factory (Group) Co., Ltd , https://www.jmaprofile.com Our company's L and D series multi-cylinder crankshafts are designed with thread on the flywheel end. The verticality is 0.03/R10~0.05/R10. The thread diameter is checked by the thread limit plug gauge, and the verticality is measured by the threaded rod checker. In order to eliminate the gap between the thread measuring heart rod and the measured screw hole diameter, a set of heart rods with different medium diameter sizes have been used in the past.
Screw hole vertical inspection tool