Plant fibres, wool and webs can be turned into thread. Thread can then be woven into cloth, which then can be used to create a variety of textile products such as bags, clothing, rope or crafts. (For a full discussion of the process and possibilities, see textile industry.)
A dwarf with the thresher labor enabled can process plants (either rope reeds or pig tails) into thread at a farmer's workshop with the "Process Plants" job order. Wool is collected from sheep, alpacas and llamas by the "Shear creature" job; the resulting "stacks" of wool must then be processed to yarn with the "Spin thread" job. These jobs also take place at the farmer's workshop and require the shearer and spinner labors. With a loom, any dwarf with the weaver labor enabled will automatically collect any spider silk webs that are on the ground, turning them into thread.
Animal hair that is produced from a butchered animal can also be spun into hair thread at a farmer's workshop using the "Spin Thread" order, but cannot be used for the production of cloth or related items.
Any thread can be used at a Hospital to suture any wounds shut. This is the only use of threads made from the hair of non-shearable creatures, as they cannot be spun into yarn.
Adamantine strands are treated as thread, too: they can be dyed, used to suture wounds and woven into cloth. However, most adamantine strands are quickly turned into wafers, among others to avoid such usage. Especially the use of adamantine for a suturer's job is widely seen as a frivolous waste of a rare and precious resource.