DYWISHKEY 360 Pieces M3 x 4mm/6mm/8mm/12mm/16mm/20mm Stainless Steel 304 Hex Button Head Cap Bolts Screws and Nuts Kit

Nice selection of screws for hobby use

I tend to use a ton of M3 screws in various projects. These are pretty good. The nuts are a bit thin and I generally use lock nuts or just use them into metal that I've tapped. If you are looking to use the nuts you might consider another kit or just buying separate nuts. The bolts and washers work as expected.

It’s exactly as described holds things together

All the screws are in little bags which are then inside the plastic box in the picture which is then wrapped in plastic and then put inside a plastic envelope. Took my 10 minutes to unwrap the screws and after all that, the screws strip out the moment that have the slightest torque applied to them. Just don't.

Exceptionally well packaged. A number of these assortments from other suppliers have come scrambled. This supplier packs each individual fastener in its own seal bag before placing in the case. The case lid is then sealed to keep the lid from opening. Then the box is shrink wrapped and then placed into another heavy heat sealed bag. These fasteners aren’t escaping or getting blended together. Fasteners themselves are good quality.

Worked perfectly for my small project. Now have an assortment left for future need.

I needed 8mm metric bolt, not 8mm length,, couldn’t use this product

If you are installing any Optoma projectors you should have this because Optoma uses M3 screws which happen to be kinda hard to find for some reason.