Review on Pack Of 50 M5-0.8 X 16Mm Button Socket Cap Screws | ISO 7380 Standard | Class 10.9 Grade Alloy Steel | Black Oxide Finish | Hex Drive by Tim Bunker

They work and they were cheap so they are fine, but despite the black coating and showing up absolutely drenched in oil, they started rusting IMMEDIATELY. I was using them on a panel that people are going to be touching and leaning on so they are going to rust a lot more as it gets used. That’s disappointing. I don’t think they even lasted 3 days before being covered in visible rust.