براغي ذات رأس مقبس HOLO-KROME 76492 M20-2.5 × 50mm | محرك سداسي | فولاذ سبائكي أسود حراري (10/عبوة)

Ten screws in the pack, exact M20-2.5 threading, and the alloy steel feels solid when torqued into my jig. The black oxide finish is evenly applied, no drips or burrs on the socket drive. Just wish the package came with a thread protector for storage—minor thing, they work fine.

These bolts fit perfectly into my milling machine's T-slots without any binding. The black oxide finish looks professional and seems to resist shop fluids well.

Cutting threads into hardened steel jig plates usually kills standard bolts, but these black oxide screws drove in smooth as butter with no binding at all. The hex socket gripped perfectly without stripping, even at higher torque.