M3-0.5 X 25mm 內六角螺絲 | 平頭內六角驅動 | 部分螺紋 | 10.9級合金鋼鍍鋅 (400 顆/包)

The hex socket drive on these M3 screws grips perfectly, making them easy to install in tight assembly jigs without stripping. The zinc plating on the alloy steel looks clean and uniform across all 400 pieces.

Used a handful of these for a precision assembly at work, and the Class 10.9 alloy steel feels noticeably tougher than the usual stainless. The partial threading made alignment easier in tight spaces, and the zinc plating seems consistent across all 400 pieces.

I needed a solid batch of M3s for a jig I was building, and the hex socket drive made tightening them in tight spots much easier than with a Phillips. These 25mm partially threaded ones held perfectly without stripping, exactly what Class 10.9 should deliver.