7/16-14 X 2" 內六角螺絲 | 六角驅動 | 美國製造 | 合金鋼熱黑氧化物 (500 入/包)

Installed these in a jig I'm building for my shop; the black oxide coating has a nice, even finish and the hex socket drives cleanly without stripping.

Grabbed a box of these for a custom jig setup and the hex socket drive seated perfectly every time, no stripping even under heavy torque. The black oxide coating has held up nicely against shop grime so far, and for a 500-count pkg they're a solid value.

Finally, a full box of 500 that’s actually consistent—threads are clean and the black oxide finish looks even across all of them. I’ve used about fifty so far for jig setups and they drive in smoothly with a hex key, no stripped sockets. The alloy steel feels solid, which is exactly what you want fo