1/4-20 x 1/2" 尼龍防鬆平頭內六角止付螺絲 | 合金鋼 (250/包)

Installed these to secure a jig in my drill press, and the nylon patch really holds them in place without loosening. The alloy steel feels tough, and a full 250-pack means I won’t run out midway through a project.

The hex socket drive made installing these in a tight spot under my workbench so much easier than using a regular screwdriver. All 250 screws in the pack look consistent and the flat point sits flush, which is exactly what I needed.

The nylon patch on these holds them in place like a dream—no more hunting for lost screws after vibration shakes them loose. The hex socket drive made tightening them in a cramped bracket a breeze, and the flat point seated perfectly against the shaft.