It came with screws defective!
592346
Product came with 4 screws to assemble, however one of them came defective. It's impossible to assemble the swing right now so I can't test it. On the other hand, this product doesn't come with battery!  I though it came included. Very disappointed!
2965644
Was missing proper screws.  Unable to complete installation.  Now I got screwed!

Good luck with this one.
4452847
Like a couple of others noted, it was supposed to be a package of 100 screws.  But, there were only 92 in the package and one of them was defective - there was no slot in the head.  This is a quality control issue.  It appeared that the screws had been re-packaged from a bulk container.  The package was just a generic clear plastic sleeve that had been filled, heat sealed and labeled with an adhesive sticker.  I have no issue with the packaging, but whoever is doing it needs to get the count right.

The quality of the screws themselves is fine.
3845600
The item was defective, 5 screws holding one side of the brackets were all loose. Had to fix it with some gorilla glue, but one screw is still missing.
95236
Arrived without screws to install and with damaged packaging.
4928342
Bought it the end of last year and haven't got chance to assembly it until this weekend. What a surprise. A incorrect screw was included. Apparently the screw was not machined correctly and there is no way to install it with included hex key wrench: someone forgot to machine the hex hole on the screw head. I tried but fail to find a similar screw in homedepot. For such expensive item with excellent review, I'd expect they will have better quality control. Very disappointed.
246549
The item came defective, the screw hole is on the wrong side of the bar, so there is no way to assemble it.  It's supposed to go up NOT on the side.
3066101
Please look at this picture. Im missing a screw and I need a replacement in the next couple of days.  Container was open and things were out rolling around in box. No screw to be found.
3531671
I bought this product and it was so defective nothing was measure right. I had to put together this thing and one of the wooden planks did have a hole, the screws we're bad and everything was uneven. I have pictures very disappointed
2972410
The self assembly kit was missing a screw, so I had to find a different ill-fitting screw to assemble it. As a result I am worried the product may not last long or might cave in one day. I did not choose to return because unassembling it would have damaged the product.
4711210
screws did not fit anywhere no instructions worth about 25cents
3490791
The screws were missing tried to request for replacement but it kept directing me to returning the item I just want the missing screws so my order can be complete
411499
I am unable to use the product because it is missing the screw to connect the two pieces together... It also states there's no return policy..  I just want the screw....
3494130
Missing screws for assembly, kinda annoying to have to plan a trip to the hardware store after getting a package!
2895670
THERE WAS A SCREW MISSING FROM THE HANDLE!!!!
I gave it as a gift and it was very embarrassing when the person noticed that part of the handle was not secured.
I was able to find a screw in my toolbox that fit so i didn't need to send it back and wait for a replacement.
My point is BEWARE OF MISSING PARTS!!
3814808
Sorry to say this chair has ended up a disappointment.  The screws to hold the back on were missing.  I was offered the choice to return it for a refund or a $10.00 disocunt  and I could buy screws at a hardware store.  Since we assembled it, it would have been difficult to take apart to return.  Founds screws, but time has proved this chair is uncomfortable and uneven.
2427391
Only came with one out of four required screws.  Also it came in WHITE instead of BLACK.  Two mistakes with the order.

Updated: contacted Yamakai and resolved with replacement.