820 Thompson Ave. Unit 41, Glendale, CA 91201

Phone: 1-800-896-3459 Fax: 1-866-707-9864
info@precion-inc.net
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
0.75-11.5 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
0.75-11.5 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
0.5-14 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
0.75-14 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

ANSI Standard Hose Coupling Threads for NPSH, NH and NHR Nipples and Coupling Swivels

*** All dimensions are given in inches

The above data sheet can be used for information purpose only. No responsibility can be accepted for errors or omissions by whatever cause.

Precion, Inc. 820 Thompson Ave. Unit 41, Glendale, CA 91201　　　©2009 Precion, Inc. All Rights Reserved.
Please notify us of any errors on the sheet.

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.