M10 x 30mm 滾花錐形點內六角固定螺絲 | 合金鋼 (100 / 包)

The knurled cup point really bites into the surface—I was worried about slippage under vibration, but these held firm on a jig I assembled. Alloy steel feels sturdy for the price, and the hex drive made cinching them down in a tight bracket a breeze.

The hex socket drive made seating these in a cramped bracket way easier than fumbling with a slotted bit, and the knurled cup point held firm once torqued down. Solid alloy steel feel, no stripped heads on the first install.

I’ve been using these set screws for a few weeks now and the knurled cup point really helps them bite into softer materials without stripping. The alloy steel feels solid and the hex socket drive works perfectly with my standard tools.