HOLO-KROME 76076 براغي ذات رأس مقبس M4-0.7 × 20 مم | محرك مقبس سداسي | فولاذ سبائكي مع أكسيد أسود حراري (100 / عبوة)

Finally, a socket screw that doesn’t strip after two uses—the black oxide finish is tough and the threads cut cleanly into my aluminum jig. I ordered a bag of 100 for a batch of fixtures, and every single one seated flush without any wobble.

The hex socket drive fits my hex key perfectly with no slop, these 20mm lengths are exactly what I needed for a jig assembly. All 100 screws in the pack have consistent threads and the black oxide coating gives them a clean, uniform look.

The black oxide finish blends perfectly with my tooling setup, and the socket drive grips the hex key securely without any wobble. These M4x20s were exactly the right length for securing a precision assembly I've been working on.