[Code of Federal Regulations] [Title 33, Volume 2] [Revised as of July 1, 2003] From the U.S. Government Printing Office via GPO Access [CITE: 33CFR149.471] [Page 209] TITLE 33--NAVIGATION AND NAVIGABLE WATERS CHAPTER I--COAST GUARD, DEPARTMENT OF HOMELAND SECURITY (CONTINUED) PART 149--DESIGN, CONSTRUCTION, AND EQUIPMENT--Table of Contents Subpart D--Safety Equipment Sec. 149.471 Fire hose coupling. Each fire hose coupling must: (a) Be made of brass, bronze, or material that has strength and corrosion resistant properties at least equal to those of brass or bronze; and (b) Have 9 threads per inch for 1\1/2\ inch hose or 7\1/2\ threads per inch for 2\1/2\ inch hose.