200 Pieces M4 x 30mm /35mm /40mm /45mm /50mm, Button Head Socket Cap Metric Screws Bolts Washers Nuts Kit, 10.9 Grade Alloy Steel, Fully Threaded, Black

As an amateur upholsterer, my dilema was how to attach new back upholstered inserts for the Alter chairs for a friend's church. Screws wouldn't work and finding the size needed at the hardware store was impossible. I found these Helifouner Bolts online. The price was too good to pass up getting the entire selection instead just of the twelve I needed. As it turned out, I needed the 35mm instead of the 30mm I originally thought I needed so was really happy I bought the whole set. They worked perfectly. They are sturdy and if the back should need to be re-upholstered in the future, the insert can easily be removed (rather than glued in place.) One can never have too many nuts and bolts!! I told their Pastor that there was bubble wrap in the bottom and tacks in the back to wake up the congregation if he popped a bubble or leaned into a tack. Of course, I didn't really do that but it amused me.

Made very well no burs all the hardware looks good. Put them on a modified ascent fusion shock tower needed longer screws.

I used these to help with my OCD on my motorcycle. I ordered an aftermarket part for my motorcycle and they sent hardware to mount it on the footpeg. The problem was that it made one side of the bike mounted with a footpeg that had hardware required an 8mm Allen wrench and the other side required a 6mm Allen wrench (and was silver in color despite the motorcycle being black). So I had to use different size tools when I worked on different sides of the bike (not a huge deal, but annoying enough).With this pack I was able to use the 30mm size on one side with a 6mm Allen wrench head and the 45mm size on the other side also with a 6mm Allen wrench head. This helped my OCD with everything (color and size). And I have plenty of extras for other needs (I only used 4 bolts and washers from the pack).

A lot of these bolts/nuts more than likely will come oily and this one is no exception. But, the construction quality seems solid. Functions as intended and the machining seems good with everything fitting properly.

Perfect. Thank you!

Great selection of long screws. Great for my RC hobby! I will buy from them again! Best price and a great value!

nice selection

Alot of 3d prints use 3mm screws for hinges and latches. Having a good assortment is handy.