براغي ذات رأس سداسي M18-2.5 × 70 مم | فولاذ فئة 8.8 عادي | ملولب جزئيًا (20 / عبوة)

Used these to bolt down a heavy press at work and the 8.8 grade held torque perfectly with no stretching. The partial threading makes them ideal for clamping thick flanges without bottoming out.

These threads are clean-cutting with decent surface finish, and the 70mm length with partial threading gave me just enough shank for my jig setup. No stripped heads or galling on the three I've torqued down so far.

Had to swap out a stripped bolt on my press brake and the partially threaded shaft made positioning the locking nut a breeze. The hex head grabbed my socket perfectly without any slipping.