- A published standard that establishes dimensional requirements for standard sizes and types of various products;
- A published standard that establishes technical requirements for the product; and
- A published standard that establishes methods of testing, grading, and marking the product. The objective of product standards is to define requirements for specific products in accordance with the principal demands of the trade. Product standards are published by the National Bureau of Standards of the U.S. Department of Commerce, as well as by private organizations of manufacturers, distributors, and users.