براغي رأس مقبس 1/2-13 × 3-1/2 بوصة | محرك مقبس سداسي | صناعة أمريكية | فولاذ سبائكي مؤكسد أسود حراريًا (25/عبوة)

The hex socket drive on these 1/2-13 screws grabs the Allen key perfectly without any slipping, and the black oxide finish gives them a tough, professional look. I used them to rebuild a jig in my shop, and they threaded into tapped holes with zero resistance. Exactly what I needed for heavy-duty to

I was a little surprised by how heavy these screws are compared to what I'm used to, but the black oxide finish looks great and they threaded smoothly into my jig. For the price, getting 25 USA-made alloy steel fasteners this size feels like solid value.

The hex drive seated deep and snug without any cam-out, which I appreciated on a tight bolt pattern. They’re solid and the black oxide finish seems durable, though one had a slightly rough edge that I hit with a file before install.