براغي رأس أسطواني M4-0.7 X 45mm | رأس دائري بمحرك سداسي داخلي | كاملة الخيوط | فئة 12.9 سبيكة فولاذ مؤكسد أسود حراريًا (400 / عبوة)

I needed a solid batch for a jig project and these black oxide M4 screws definitely deliver. The hex socket drive bit seats perfectly and the threads run smooth without binding—even in tight production fittings.

The threading is clean and uniform across all 400 pieces, and the black oxide finish looks consistent even under bright shop light. I grabbed a handful for a jig I’m building and they seated flush without any binding. Solid purchase for the price.

The hex socket drive grips perfectly with my Allen key, and the 12.9 alloy steel feels rock solid threading into my jig fixture. Took all 400 without a single stripped head, which is exactly what I needed for a tight production run.