1/2-13 x 16" 內六角螺絲 | 六角驅動 | 部分螺紋 | 合金鋼熱處理黑色氧化 (2個/包)

I used these 16-inch cap screws to anchor a heavy jig to my workbench, and the partial threading made installation straightforward. The hex socket held up perfectly under high torque without any stripping.

The black oxide finish on these screws is much more durable than I expected, no chips after torquing them into my press fixture. The hex socket drive made installation straightforward even in a tight spot. Exactly what I needed for tooling assembly.

Used them to bolt down a heavy jig on my mill table, and the 16" length was exactly what I needed to reach through everything. The black oxide coating looks sharp and the hex socket seated the wrench without any slop.