Bolts for construction should be cheap.
I bought it to make a sliding hammer which is a maintenance tool.
Well, since the monotaro brand slide hammer is sold cheaply, it may not be necessary to make your own.
Although there was no problem with most items, there was a case that the nut did not turn by hand at the position of about 30 mm from the tip of the threaded portion, but abnormality was not examined on the screw in the appearance. As it is imagined, is not the plating layer concentrating on the protrusion (burr at rolling)? Is it?
The thread was crushed in the middle. Returns are also troublesome and I managed to use it because I corrected for myself, but it is obviously a defective item. It is not easy to obtain this standard easily and it is inexpensive to overwhelm others, but is it that I am bad with it? Or should we recognize what Osaka people make like this? This time we attach it to ourselves, but it also concerns the reliability of your company selling, so we want to ask strict precautions for manufacturers.