براغي رأس سوكيت سداسية | 1/2-12 × 4" | محرك سداسي | ملولبة جزئيًا | فولاذ سبائكي مع أكسيد أسود حراري (25/عبوة)

Bought a pack for some machinery tooling and the black oxide finish is holding up nicely—no rust spots after a few weeks in a humid shop. They thread in smooth and the hex socket grabs well, though I wish the box had a few extras for that price. Fit for my precision assemblies was dead-on, so I’m se

Installed these in a new jig I'm building and the black oxide finish makes them look like they belong on a factory floor. The hex socket drove in cleanly without stripping.

These 1/2-12 x 4" socket cap screws fit perfectly into my jig setup, and the black oxide coating gave them a nice, uniform finish. The hex socket drive made installation quick with my Allen wrench.