I was putting away some mixed SH shoulder bolts, checked diameters, and found this group were all about 1% under the common fractional diameters. I thought I'd easily find a convention that spelled out the industry standard so I'd drill and ream right-size holes and select right bolts, but the several bolt-vendor webpages I found all showed even fractional diameters for such bolts, 1/4, 5/15, 3/8, 1/2, 5/8,,etc. Just one example: How to measure socket head shoulder screws | Fasteners, bolts, screws and more from Atlantic Fasteners
So, do I have a special-order batch of shoulder bolts, or is everyone just supposed to know that when a vendor sells a "1/2-inch" diameter bolt, it is really 0.495" like mine?
So, do I have a special-order batch of shoulder bolts, or is everyone just supposed to know that when a vendor sells a "1/2-inch" diameter bolt, it is really 0.495" like mine?
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