براغي ذات رأس مقبس 3/8-16 × 8-1/2 بوصة | محرك مقبس سداسي | ملولبة جزئيًا | فولاذ سبائكي معالج حراريًا أسود (25/عبوة)

The black oxide finish on these screws gives them a nice, uniform look and seems like it will resist rust well in my shop. I needed extra-long cap screws for a press fixture I was building, and these 8-1/2" ones fit perfectly. The hex socket drive made installation straightforward with a standard Al

Finally a socket cap screw long enough for my jig builds without stacking spacers. The hex drive seated perfectly and the black oxide finish has held up through a few oily shop sessions.

The thermal black oxide finish on these is what sold me—they slide into my tooling fixtures with zero binding, and the 8-1/2" length fits exactly where my shorter ones wouldn't. I've already ordered another pack for my next precision assembly job.