I have had the NASA "Fastener Design Manual" on my Google drive for over a month now. I figured some may be interested in this, so time to upload the link.
For my interests, one of the greatest outcomes of the development of the internet was the "Internet Archive" site. They are up to 12,000,000 books and texts uploaded, amazing. I have downloaded 1000's of books that I would never have had a chance of finding in the used book market.
One of the fine collections the archive keeps updated is the NASA Technical Reports Server (NTRS). There are over 232,000 texts in this collection, on a variety of technical subjects, which NASA has made available to the public.Here is the link to the collection NASA Technical Reports Server Collection.
Here is an example of one of their fine reports. "Fastener Design Manual" deals mainly with the design of fasteners for the aeronautical industry. It was published in 1990 and made available to the public in 2008, written by Richard Barret. For the diy'er this is about as cutting-edge info. as we are going to get.
You can download "Fastener Design Manual" on my Books - Free Downloads page - #20 - 5 MB - pdf.