Sheet metal grommets can be used with sheet (plain) or spur tooth washers. They are available in 304 stainless steel or brass. Paskal stock and recommend using Stainless Steel Grommets.
Teeth washers offer a firmer, tighter grasp, providing stronger grip in woven materials. They can be used with dual feeding machines. The telescoping, barrel to barrel setting of the neck washers reinforces the hole with 2 entire parts. Sheet washers provide support for the grommet setting.
Sheet metal grommets and washers are widely used in awnings, bags, banners, car mats, curtains, fashion, flags, netting, pool covers, sails, signs, tarpaulins, tents, etc. They are the most economical way to reinforce holes in different materials to prevent tearing.