If only distinguished from the shape, there are hexagon bolts, hexagon nuts, studs, flat pads, spring pads, pins, rivets, hexagon bolts, hexagon nuts, fully threaded studs, non-standard fasteners, round nuts, hexagon bolts and so on.

In terms of materials, there are 304,365,438+06, A2-50, A2-70, A2-80, A4-50, A4-70, A4-80, A 193-B8, A 194-8.

If we distinguish from standards, there are national standards, American standards, German standards, British standards, petrochemical standards, chemical standards and so on.

To process, manufacture, use and distribute American-made bolts and nuts, American-made bolts and nuts and American-made standard bolts and nuts, there must be American-made screw standards. You should buy a set of the latest American fastener standards, the eighth edition of IFI British fastener standards manual (published in English) (20 1 1). Experts will win, and those with standards will have relevant business.

I sell the eighth edition of IFI British fastener standard manual, the latest American fastener standard encyclopedia, as well as various fastener standards, books and materials, fastener training materials, etc. See Resources for more information.