براغي رأس سداسية 3/4-10 × 3-1/2 بوصة | صناعة أمريكية | فولاذ سبائك PFC9 أصفر زنك (20 / عبوة)

The yellow zinc finish looks great on these and held up fine under the wrench. I’ve used a lot of 3/4” cap screws for equipment repairs, and the PFC9 alloy steel feels noticeably tougher than the standard stuff I’ve grabbed before.

These bolts drove in smooth with a socket, no binding at all. The yellow zinc coating looks like it'll resist rust, and given they're US-made, I'm confident they'll hold up on the press.

Threaded these into a heavy press frame and the hex heads seated perfectly with a wrench—no stripping or wobble. The PFC9 alloy feels solid, and the yellow zinc coating hasn't shown any wear after a week of use.