M6-1 X 50mm 六角頭螺絲 | 10.9 級鋼 無處理 | 部分螺紋 (250 顆/包)

The hex head seats cleanly with a 10mm socket, no stripped corners even after torquing a few down to spec. Class 10.9 hardness means they've held up fine in a steel bracket assembly I've had to adjust twice. Solid 250 count for the price, too.

The partially threaded design made alignment much easier in my assembly jig. The hex heads are sharp and take a socket bite without slipping. Class 10.9 steel feels incredibly solid for the price.

These bolts are holding up perfectly in my heavy machinery setup, the Class 10.9 steel is clearly tough and the hex head gives a solid grip with a wrench.