M5-0.8 X 15mm 內六角螺絲 | 六角驅動 | 全牙 | 12.9級合金鋼鍍鋅 (400顆/包)

The hex socket drive grips my Allen key perfectly with zero stripping, and the zinc plating survived a full week in my humid garage without a speck of rust. For the price of 400 pieces, these class 12.9 screws are a steal for jig building.

These are going straight into my tooling jigs and they hold up exactly as a 12.9-grade screw should, no softness or stripping under the hex driver. The zinc plating gives them a clean, consistent finish. Bought the 400-pack and every single one threads true.

I needed a batch of strong fasteners for a jig I'm building, and these socket cap screws torqued down perfectly without any stripping. The zinc plating on every single one in the pack looks consistent, and the hex drive fit my wrench snugly.