[Feature Request] Please add DIN-908 and DIN-910 plugs, together with DIN-7603 gaskets

[ToniTen]

When dealing with gearboxes and other items that need to be oil-tight, these plugs, together with these gaskets, are very commonly used. Could they please be added to Fasteners? They're listed at #321

https://torqbolt.com/din-908-hexagon-socket-screw-plug
https://torqbolt.com/din-910-hexagon-head-screw-plugs-with-collar
https://torqbolt.com/din-7604-light-duty-hexagon-head-screw-plugs

Since the plugs usually require these gaskets, it would be very helpful if it was possible to add the plug+the gasket together

Also, if possible, both the metric fine pitch thread and the pipe thread as per DIN EN ISO 228-1 should be included