New York Codes, Rules and Regulations
Title 9 - EXECUTIVE DEPARTMENT
Subtitle F - Local Government
Chapter III - Fire Safety
Part 205 - Fire Mobilization And Mutual Aid Plan
Section 205.12 - Standard thread for fire service use in the State of New York
Current through Register Vol. 46, No. 12, March 20, 2024
(a) Pursuant to the requirement of law in subdivision 4 of section 209-e of the General Municipal Law, the "American National Standard" thread as hereinafter set out in full, is hereby prescribed as the standard thread for the State.
(b) The thread standards of the State of New York are those of the National Bureau of Standards, U.S. Department of Commerce, Washington, D.C. The standards are the same as those presented by the National Fire Protection Association, the National Board of Fire Underwriters and the American Standards Association.
AMERICAN NATIONAL THREAD (NH)
MAXIMUM (BASIC) NIPPLE DIMENSIONS
|
Nominal Size of Hose |
No. of Threads Per Inch |
Pitch |
Depth of Thread |
Major Diameter "D" |
Pitch Diameter "E" |
Minor Diameter "K" |
Allowance |
| 3/4", 1" | 8 | .12500 | .08119 | 1.3750 | 1.2938 | 1.2126 | .0120 |
| 1 1/2" | 9 | .11111 | .07217 | 1.9900 | 1.9178 | 1.8457 | .0120 |
| 2 1/2" | 7 1/2 | .13333 | .08660 | 3.0686 | 2.9820 | 2.8954 | .0150 |
| 3" | 6 | .16667 | .10825 | 3.6239 | 3.5156 | 3.4073 | .0150 |
| 3 1/2" | 6 | .16667 | .10825 | 4.2439 | 4.1356 | 4.0273 | .0200 |
| 4 1/2" | 4 | .25000 | .16238 | 5.7609 | 5.5985 | 5.4361 | .0250 |
AMERICAN NATIONAL THREAD (NH)
MAXIMUM (BASIC) COUPLING DIMENSIONS
|
Nominal Size of Hose |
No. of Threads Per Inch |
Pitch |
Depth of Thread |
Major Diameter "D" |
Pitch Diameter "E" |
Minor Diameter "K" |
Allowance |
| 3/4", 1" | 8 | .12500 | .08119 | 1.3870 | 1.3058 | 1.2246 | ....... |
| 1 1/2" | 9 | .11111 | .07217 | 2.0020 | 1.9298 | 1.8577 | ....... |
| 2 1/2" | 7 1/2 | .13333 | .08660 | 3.0836 | 2.9970 | 2.9104 | ....... |
| 3" | 6 | .16667 | .10825 | 3.6389 | 3.5306 | 3.4223 | ....... |
| 3 1/2" | 6 | .16667 | .10825 | 4.2639 | 4.1556 | 4.0473 | ....... |
| 4 1/2" | 4 | .25000 | .16238 | 5.7859 | 5.6235 | 5.4611 | ....... |
