| 490 | 82666 | STOCKHAM VALVES AND FITTINGS INC |
| B16.1 | 80204 | AMERICAN NATIONAL STANDARDS INSTITUTE INCORPORATED |
| WW-F-406ACC06 | 81348 | FEDERAL SPECIFICATIONS PROMULGATED BY GENERAL SERVICES ADMINISTRATION WASHINGTON DC |
| WWF406 | 81348 | FEDERAL SPECIFICATIONS PROMULGATED BY GENERAL SERVICES ADMINISTRATION WASHINGTON DC |
| WWF406A | 81348 | FEDERAL SPECIFICATIONS PROMULGATED BY GENERAL SERVICES ADMINISTRATION WASHINGTON DC |
| WWF406CLASS125 | 81348 | FEDERAL SPECIFICATIONS PROMULGATED BY GENERAL SERVICES ADMINISTRATION WASHINGTON DC |