M5-0.8 x 18mm 內六角螺絲 | 圓頭內六角驅動 | 全牙 | 10.9級合金鋼鍍鋅 (600顆/包)

Pulled these out to swap into a jig this morning and the threads are flawless, no burrs or binding on the first pass. The zinc plating has a clean, even finish that should hold up fine on the shop floor. Class 10.9 strength gives me confidence they'll handle the clamping load without stretching.

The hex socket drive is perfectly clean-cut, so my Allen key seated instantly on every single screw. Out of 600, I only found one with a slightly off plating, but the rest have held up great in my tooling fixtures for the past few weeks.

I needed to replace the bolts on a jig I use for assembly, and these M5s fit perfectly with their precise threading. The zinc plating gives them a clean, consistent look, and the hex socket drive made tightening them down a breeze.