The size of beads varies greatly, go to FireMountaingems.comIf you want the different sizes of seed beads, they go from size 4 (bigger ones) up to size 15 (very tiny ones. The numbers denote, how...
Beading thread is usually finer (thinner) and stronger than sewing thread. There are so many different kinds of sewing thread, it's hard to answer your question. Using the correct thread for the...
As far as i can tell the thread is the same as on a Schrader valve which is:
Metric: 7.7 mm OD, thread root diameter is 6.9 mm x 0.794 mm pitch. English: 0.305 in OD, thread root diameter 0.302 in x...
Check in the Machinery's Handbook 17'th edition on page 1191 through 1193 for a description of all the metric threads as agreed to by the international congress for thread standardization at zurich...