1/2-13 x 2-1/4" 內六角螺絲 | 六角驅動 | 美國製造 | 合金鋼熱處理黑色氧化 (50 / 包)

Used a few of these on a jig for my mill, and the hex socket drive made tightening them in a tight spot much easier than a standard hex head. The 50-count box is perfect for a project where I need extras.

These fit perfectly in my jig fixture without any binding. The hex drive seats well and the 2-1/4 length is exactly what I needed for this setup.

Finally, a socket cap screw that doesn't strip the hex drive on the first use. The black oxide finish on these alloy steel screws feels durable and should hold up well in my jig setup.