براغي رأس مقبس 5/16-18 × 10 بوصة | محرك سداسي | ملولبة جزئيًا | فولاذ سبائكي مع أكسيد أسود حراري (9/عبوة)

The black oxide finish on these screws looks great against the steel in my jig setup, and the hex socket drive made installation straightforward with a T-handle.

Needed a long 10-inch screw for a custom tooling fixture, and these cap screws fit perfectly with their partial threading. The black oxide finish looks clean and the hex socket drive made installation straightforward.

Installed these in a jig I'm building and the 10-inch length was perfect for reaching through multiple layers. The hex socket drove cleanly without stripping, and the black oxide coating seems to resist rust well so far.