HOLO-KROME 720001494 براغي غطاء مقبس 5/16-18 × 4-1/2" | محرك مقبس سداسي | فولاذ سبائكي معالجة حرارية بأكسيد أسود (5/عبوة)

I needed a longer bolt for a jig I'm building, and these socket cap screws fit the bill perfectly. The threads are clean and the hex drive seated my tool without any wobble.

Finally, hex socket drive cap screws that don’t strip under torque—the black oxide finish actually helps them slide into jigs without galling. Used these on a press setup and they held firm even after repeated cycles.

Perfect fit for the 5/16-18 bolt holes on my milling machine's hold-down clamps—the hex socket drive made installation a breeze even in tight spots. The black oxide coating gave them a nice, uniform look right out of the package.