830 Pcs M2 Screws Kit Metric Bolts Kit M2*4mm/6mm/8mm/10mm/12mm/16mm/20mm Machine Screw Kit, 12.9 Alloy Steel Black Zinc Plated Hex Socket Head Screws Nuts Bolts and Washers Set

This assortment includes a good range of M3 screw lengths, which makes it handy for electronics, 3D printer parts, small enclosures, and general hardware projects. The selection covers common sizes, and having everything in one case saves time versus hunting individual screws. The screws appear well-machined with clean threads, and they threaded smoothly into nuts and tapped holes during use. I didn’t experience stripping or binding when installing by hand. The case keeps sizes separated and clearly labeled, which helps when working quickly. Material feels solid for typical M3 applications. I didn’t perform hardness testing, but for normal workshop and repair use, they’ve held up fine so far. Overall, a useful assortment to keep on hand if you work with small hardware regularly.

These M3 screw kits have been working out great for me in my daily projects. The black galvanizing technology makes sure they look clean and professional, which is always a plus when you're trying to impress clients or colleagues (or just want your work to look neat). I especially love the fact that there are seven different lengths included - it means I don't have to worry about running out of the right size in the middle of a project. The set also comes with plenty of washers and nuts, so you won't run out while working on something important (I hate when that happens). The box itself is really well-organized too, which makes it easy to find what you need quickly. It even has internal and external labels marking the corresponding screw size and quantity - talk about attention to detail! I haven't had any issues with these screws loosening up either, so they seem to be pretty reliable as well. Overall, I'm really happy with this purchase (I got them on sale at a local hardware store for like $15 or something).

First thing is first - These are M2 screws. They're tiny! These made an excellent addition to my 3d Printing exploits. A number of items have small parts that remain stationary. I found that rather than using epoxy or CA glue, simply pressing in a brass threaded insert and maybe drilling a hole, this provides a sturdier hold for smaller pieces. It also is nice for pieces that need to clamp onto something like a handlebar of a bike or something. The assortment is great and the screws are high quality. They don't easily cross-thread, and they should hold up to oxidation over time. They took some abuse from my screwdriver without the black chipping away.

They do the job as they should. They are cheap so you shouldn’t expect grade 8 hardware, but they hold up to everything I use them for great. I have had a few bolts get stripped but that was my fault for over torquing them.

Good quality Hardware. Only complaint is the assortment is very heavy on Tiny screws and only includes a few large Hardware items

Great assortment and well machined, secure and compact storage box, with size identification. Fast delivery.

Good Assortment at a good price.

This works great thus far for the limited uses, but it's nice to have for RC or 3D printed things. They do rust of course if in a wet application.