براغي رأس مقبس M4 × 12 مم | محرك مقبس سداسي | فولاذ سبائكي (200 / عبوة)

The hex socket drive grips my Allen key perfectly, no slippage even under high torque. These M4 alloy steel screws have held up flawlessly in my precision assembly rig so far.

Used a full bag on a custom jig build and every single thread seated perfectly with no binding. The alloy steel feels noticeably tougher than the cheap zinc screws I usually grab from the hardware store. Exactly what I needed for precision assemblies.

The hex socket drive on these M4 screws made tightening them in tight spots on my jig much easier than using a standard wrench. The alloy steel feels sturdy, and all 200 pieces in the pack were perfectly threaded with no defects. Great value for precision work.