براغي رأس مقبس سداسي HOLO-KROME 76540 M20-2.5 × 150 مم | محرك مقبس سداسي | فولاد سبائكي مع أكسيد أسود حراري (10 / عبوة)

These M20 bolts fit perfectly into my jig fixture, and the black oxide finish gives them a solid, professional look. The hex socket drive made installation quick with no stripping. Exactly what I needed for heavy-duty tooling work.

I was initially worried the thermal black oxide finish would be just for looks, but it actually held up well against a few drops of cutting oil on my press brake. The hex drive seated cleanly without stripping, which was exactly what I needed for these tooling fixtures.

These M20 screws went right into a jig I'm building, and the hex drive seated perfectly without any cam-out. The black oxide finish feels durable and should resist rust in my shop.