براغي رأس أسطوانية M24-3 X 200mm | محرك سداسي داخلي برأس مسطح | خيط جزئي | فولاذ سبائكي فئة 12.9 بأكسيد أسود حراري (5 / عبوة)

The partially threaded design made aligning these in my jig setup way easier than I expected, and the black oxide finish took a firm grip without any galling. For the price per piece, the 12.9 alloy steel feels solid and the hex socket drive stayed true even under a decent torque load.

The hex socket drive seated perfectly on my torque wrench, and the 12.9 alloy steel feels seriously rigid for a 200mm length. Threads ran clean into my jig plate without any binding. These are going to hold up for years.

Installed these in a jig I was building and the 12.9 alloy steel with the thermal black oxide finish feels incredibly sturdy and resistant to wear. The hex socket drive made it easy to get a solid grip and tighten them down without any stripping.