5/16-24 x 1-1/2" 內六角螺絲 | 六角驅動 | 尼龍防鬆膠 | 全螺紋 | 合金鋼熱處理黑色氧化 (100 / 包)

The nylon patch on these is a lifesaver for my jig setups—they hold tight without needing threadlocker, which saves me a step on every assembly. The black oxide finish has a nice, even look and the hex socket drove cleanly with no stripped corners.

The hex drive on these screws really lets you torque them down without worrying about stripping the head. The nylon patch adds just enough grip to keep them from vibrating loose on my tooling fixtures. Exactly what I needed for a solid hold.

I needed some strong fasteners for a jig I was building, and these cap screws with the nylon patch held tight without any extra threadlocker. The hex socket drive made installation quick, and the black oxide finish looks clean and professional.