براغي رأس أسطوانية هولو-كروم 87192 M12-1.75 × 35 مم | رأس مسطحة محرك سداسي | فولاذ سبائكي مؤكسد حراريًا أسود (100/عبوة)

The black oxide finish on these screws is dead even, and they thread into my tooling without any binding. For a hundred pieces at this price, the alloy steel feels properly hardened—I've already used a dozen in a precision assembly and they hold torque exactly as expected.

Installing these into a jig fixture was effortless—the hex socket seated perfectly without any cam-out. The 35mm length is just right for clamping medium-thick plates, and the black oxide finish gives them a nice, uniform look.

The black oxide finish on these screws looks great and seems durable. I used a full box for a shop jig and every one seated perfectly without any binding.