HOLO-KROME 640010508 #6-32 X 1-1/2" 內六角螺絲 | 圓頭內六角驅動 | 合金鋼 熱處理黑氧化 (25 / 包)

I needed a handful of #6-32 screws for a small jig, and these button head ones fit perfectly with plenty of extra in the pack. The hex socket drive made installation quick with my allen key.

The thermal black oxide finish on these screws is way more consistent than the last batch I got from another supplier, and the #6-32 threads cut cleanly into my aluminum fixture without any binding. They're holding up great in a tooling jig I've been using daily for two weeks now.

Button head sits flush in my jig plate and the black oxide finish hasn't shown a single speck of rust after a month on the bench. The 1-1/2" length gives enough bite for stacked aluminum sections, and all 25 threads were clean out of the package.