براغي رأس كبس M4-0.7 × 50 مم | رأس مسطح محرك سداسي | ملولبة جزئيًا | فئة 10.9 فولاذ سبائكي أسود حراري (400 / عبوة)

I needed screws that would hold up in a jig I’m building, and these M4x50mm cap screws with the black oxide finish feel tougher than the standard ones I’ve used before. The hex socket drive fits snugly, making installation quick without stripping.

The partially threaded shank made aligning these in my tooling fixture much easier than fully threaded bolts would have. The black oxide finish looks clean and seems durable enough for repeated use in my jigs.

I needed fasteners for a jig I was building, and these 50mm socket cap screws fit perfectly. The partially threaded design made alignment a breeze, and the hex socket drive felt precise without any stripping.