500PCS M3 M4 M5 Metric Screw Assortment Kit, 8-20mm Button Head Socket Cap Screws Bolts Nuts Washers Assortment Kit, 304 Stainless Steel Metric Bolts with 3 Hex Wrench

I originally bought this kit because I needed a few 50 mm M5 button head screws for a project. Rather than ordering a single pack, it made more sense to spend a little more and end up with an assortment for future builds. I'm glad I did. What I liked: * useful assortment of lengths * good thread quality * organized storage case * worked perfectly with standard M5 threaded holes * good value The screws have threaded smoothly into every M5 hole I've used them in without any issues. The machining appears consistent, and I haven't run into any damaged threads or dimensional problems. One thing I've learned over the years is that you rarely regret having a good assortment of common hardware in the shop. It saves time, avoids last-minute trips to the hardware store, and often lets you finish a project the same day instead of waiting on another order. If you know you'll only ever need one specific length, buying an individual pack may make more financial sense. But if you do any amount of fabrication, repairs, or tinkering, an assortment like this is well worth having. Overall, these are good quality button head screws at a fair price, and they've earned a permanent spot in my hardware cabinet. I'd buy them again without hesitation.

I picked up this Bemaka M3 assortment for 3D printing projects, electronics repairs, and general DIY work, and it has quickly become one of those “why didn’t I buy this sooner” kits. First, the quality is solid. These are 12.9 grade alloy steel, so they feel strong and don’t strip easily when torqued properly. The black finish also looks clean and professional if you’re using them on visible builds like PC mods or 3D printed parts. Socket heads are consistent and the hex key fit is snug with no sloppy tolerances so far. The length selection is actually what makes this kit useful. Having 30–50mm M3 screws in one box saves a ton of time when working on projects where you don’t know the exact length until assembly. Great for 3D printer mods, mounting brackets, robotics builds, or replacing cheap stock screws that come with hardware. Only small improvement would be labeling inside the case for faster size identification, but overall this is a very practical and high-value kit to keep in any toolbox.

Everything was organized, clearly labeled, and made from good-quality materials. Perfect for repairs and DIY projects.

The size and dimensions were accurate and the steel is high quality. The variety listed was accurate and the instructions were very easy to understand.

The screws were exactly as described and will work perfectly for what I need. The only downside was the packaging. The box they came in is pretty cheap, and all of the screws were loose inside instead of being sealed in a bag like most screw kits I’ve ordered. Because of that, I had to separate about 760 pieces and clean off a fairly heavy amount of oil before organizing them back into the box. It was a little annoying, but not a deal breaker for me. Once everything was cleaned and sorted, the kit was exactly how it should have been when it arrived. Overall, still a good product. There is good amount of each screw and almost all the sizes I was wanting. Way more nuts and washers than needed.

Excellent, good quality, and sized properly. I ordered more in other sizes.

Got this for all my 3d printer projects 😊

They look good, the do the job, but I used them for an outdoor project, and they rusted overnight...

Good

Parece que está completo pero la caja venia rota

Be prepared to wipe everything down before using to get oil off

I needed these the same day they arrived, so I went ahead and used them. The box was sealed, but the bolts and nuts were noticeably oily, which was disappointing. I noticed another reviewer mentioned the same issue, so it doesn’t seem like a one-off. That said, all the parts were there and the assortment worked as expected. It did the job I needed, but I would not buy again and would of returned it if I didn’t need it that day.

Obviously a return from another customer. Clearly has been opened and nuts/bolts of various sizes scattered everywhere, some missing, covered in oil