M8-1.25 X 20mm 內六角螺絲 | 平頭內六角驅動 | 全牙 | 10.9 級合金鋼鍍鋅 (300 顆/包)

I was worried about the zinc plating holding up in my tooling jigs, but after a few months of regular use there's not a speck of rust. The hex socket drive gives a really solid grip without stripping, which is exactly what I needed for these M8 bolts.

The flat head sits perfectly flush in my fixture plate, and the zinc coating looks clean and consistent across all 300 pieces. For a high-strength Class 10.9 bolt, the price per unit is hard to beat.

Had to replace some worn bolts on a jig press and these M8 flat heads fit perfectly with a simple hex key. The zinc plating looks clean and tough enough to hold up in oily shop conditions.