51.2950—U.S. No. 3.
“U.S. No. 3” consists of walnuts in shells which are dry, fairly clean, free from splits, and free from damage caused by broken shells, and free from serious damage caused by discoloration, perforated shells, adhering hulls or other means. The kernels are well dried, free from decay, dark discoloration, rancidity, and free from damage caused by mold, shriveling, insects or other means. (See § 51.2954.)
(a)
There is no requirement in this grade for the percentage of walnuts having kernels which are “light amber” or “light”. However, the percentage, by count, of nuts with kernels not darker than “light amber” (see color chart) which are free from grade defects and/or the percentage with kernels not darker than “light” (see color chart) which are free from grade defects, may be specified in accordance with the facts. (See § 51.2954.)