Nylon 101 -- Of all the unmodified nylons, Nylon 101 is the strongest, most rigid and has one of the highest melting points. Nylon 101 is commonly specified for screw machined electrical insulators and food contact parts. Nylon 101 is stocked in both natural and black. Other colors are available on a custom basis. Nylon 101 natural is FDA, USDA, NSF, and 3A-Dairy compliant.