براغي رأس سداسي M18-2.5 × 40 مم من فولاذ كلاس 10.9 مع زنك أصفر بخيوط كاملة (25 حبة/عبوة)

Fit these onto a hydraulic cylinder mount today and the thread ran clean all the way down, no binding. Full thread length on the 40mm gives you real grip for thick flanges, and the yellow zinc tint matches the rest of the rig.

The yellow zinc coating looks proper and even on every single screw, and the threads are clean with no burrs. I grabbed these for general machinery assembly and the 10.9 steel feels reassuringly sturdy under the wrench. Box of 25 arrived well-packed and ready to use.

Class 10.9 steel is no joke—these held a heavy jig together without the head stripping when I torqued them down with a socket. Fully threaded along the whole 40mm shaft made alignment a breeze, and the yellow zinc finish cleaned up with a rag after a dusty week on the shop floor.