*** All dimensions are given in inches.
Nom. Size of Hose |
Threads Per Inch |
Thread Designation |
Pitch |
Basic Height of Thread |
External (Nipple) Thread |
- |
Internal (Coupling) Thread |
||||||||
Major Diameter |
Pitch Diameter |
Minor Diameter |
- |
Miner Diameter |
Pitch Diameter |
Major Diameter |
|||||||||
Max. |
Min. |
Max. |
Min. |
Max. |
- |
Min. |
Max. |
Min. |
Max. |
Min. |
|||||
1/2, 5/8, 3/4 |
11.5 |
.75-11.5 NH |
0.08696 |
0.05648 |
1.0625 |
1.0455 |
1.0060 |
0.9975 |
0.9495 |
- |
0.9595 |
0.9765 |
1.0160 |
1.0245 |
1.0725 |
1/2, 5/8, 3/4 |
11.5 |
.75-11.5 NHR |
0.08696 |
0.05648 |
1.0520 |
1.0350 |
1.0100 |
0.9930 |
0.9495 |
- |
0.9720 |
0.9930 |
1.0160 |
1.0280 |
1.0680 |
1/2 |
14 |
.5-14 NPSH |
0.07143 |
0.04639 |
0.8248 |
0.8108 |
0.7784 |
0.7714 |
0.7320 |
- |
0.7395 |
0.7535 |
0.7859 |
0.7929 |
0.8323 |
3/4 |
14 |
.75-14 NPSH |
0.07143 |
0.04639 |
1.0353 |
1.0213 |
0.9889 |
0.9819 |
0.9425 |
- |
0.9500 |
0.9640 |
0.9964 |
1.0034 |
1.0428 |
1 |
11.5 |
1-11.5 NPSH |
0.08696 |
0.05648 |
1.2951 |
1.2781 |
1.2386 |
1.2301 |
1.1821 |
- |
1.1921 |
1.2091 |
1.2486 |
1.2571 |
1.3051 |
1 1/4 |
11.5 |
1.25-11.5 NPSH |
0.08696 |
0.05648 |
1.6399 |
1.6229 |
1.5834 |
1.5749 |
1.5629 |
- |
1.5369 |
1.5539 |
1.5934 |
1.6019 |
1.6499 |
1 1/2 |
11.5 |
1.5-11.5 NPSH |
0.08696 |
0.05648 |
1.8788 |
1.8618 |
1.8223 |
1.8138 |
1.7658 |
- |
1.7758 |
1.7928 |
1.8328 |
1.8408 |
1.8888 |
2 |
11.5 |
2-11.5 NPSH |
0.08696 |
0.05648 |
2.3528 |
2.3358 |
2.2963 |
2.2878 |
2.2398 |
- |
2.2498 |
2.2668 |
2.3063 |
2.3148 |
2.3628 |
2 1/2 |
8 |
2.5-8 NPSH |
0.12500 |
0.08119 |
2.8434 |
2.8212 |
2.7622 |
2.7511 |
2.6810 |
- |
2.6930 |
2.7152 |
2.7742 |
2.7853 |
2.8554 |
NH = American Standard Hose Coupling Threads of Full Form
NHR = American Standard Hose Coupling Threads for Garden Hose Applications
NPSH = Dryseal American Standard for Hose Coupling Joints with Straight Internal and External Loose Fitting Threads
***NH and NHR threads are used for garden hose applications. NPSH threads are used for steam, air and all other hose connections to be made up with standard pipe threads.
***** The above data sheet can be used for information purpose only. No responsibility can be accepted for errors or omissions by whatever cause.
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