Thread Types: Difference between revisions

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=Short List=
=Short List=
*National Hose (NH). It is also called National Standard Thread (NST) or National Hose Thread (NHT). It is often referred to as “fire hose thread”. NH, NST and NHT are different abbreviations - [https://www.google.com/search?sxsrf=ALeKk026QG9BbsZl0rNsBS9KmerMgczY_w%3A1602863734253&source=hp&ei=dsKJX6q8DJDYsAXHkpG4Cw&q=is+nst+thread+same+as+NH+thread&btnK=Google+Search&oq=how+to+configure+nvidia+geforce+gtx+1650+super+on+linux+mint&gs_lcp=CgZwc3ktYWIQAzIFCCEQoAEyBQghEKsCMgUIIRCrAjoOCAAQ6gIQtAIQmgEQ5QI6DgguELEDEMcBEKMCEJMCOggILhDHARCvAToLCC4QsQMQxwEQowI6CAgAELEDEIMBOggILhCxAxCDAToFCAAQsQM6AggAOgQIABAKOgYIABAWEB46CAghEBYQHRAeOgcIIRAKEKABUMsQWOmzAWD8tAFoBnAAeACAAeQGiAGhS5IBDTExLjQ3LjMuMi42LTGYAQCgAQGqAQdnd3Mtd2l6sAEG&sclient=psy-ab&ved=0ahUKEwiqz4DcvLnsAhUQLKwKHUdJBLcQ4dUDCAk&uact=5]
Summary - there is National Hose and National Pipe as the main 2 types of threads. National Pipe can be tapered or straight, while National Hose is not tapered.
*NST - National Standard Thread. Same as GHT (Garden Hose Thread) or NH (National Hose)
*{{check}}National Hose (NH) = National Standard Thread (NST) = National Hose Thread (NHT). It is often referred to as “fire hose thread”. - [https://www.google.com/search?sxsrf=ALeKk026QG9BbsZl0rNsBS9KmerMgczY_w%3A1602863734253&source=hp&ei=dsKJX6q8DJDYsAXHkpG4Cw&q=is+nst+thread+same+as+NH+thread&btnK=Google+Search&oq=how+to+configure+nvidia+geforce+gtx+1650+super+on+linux+mint&gs_lcp=CgZwc3ktYWIQAzIFCCEQoAEyBQghEKsCMgUIIRCrAjoOCAAQ6gIQtAIQmgEQ5QI6DgguELEDEMcBEKMCEJMCOggILhDHARCvAToLCC4QsQMQxwEQowI6CAgAELEDEIMBOggILhCxAxCDAToFCAAQsQM6AggAOgQIABAKOgYIABAWEB46CAghEBYQHRAeOgcIIRAKEKABUMsQWOmzAWD8tAFoBnAAeACAAeQGiAGhS5IBDTExLjQ3LjMuMi42LTGYAQCgAQGqAQdnd3Mtd2l6sAEG&sclient=psy-ab&ved=0ahUKEwiqz4DcvLnsAhUQLKwKHUdJBLcQ4dUDCAk&uact=5]
*GHT - garden hose, used also in fire hose [https://rawhidefirehose.com/blog/guide-fire-hose-couplings-threading/#:~:text=NH%2FNST%20Threads,also%20referred%20to%20as%20NH.]. Same threads per inch as NPT, but not tapered.
*GHT - garden hose Thread, ''Garden hose thread (GHT) is also referred to as NH.''  [https://rawhidefirehose.com/blog/guide-fire-hose-couplings-threading/#:~:text=NH%2FNST%20Threads,also%20referred%20to%20as%20NH.]. Same threads per inch as NPT, but not tapered.
*'''NPSH''' - '''national pipe straight hose''' - same as NPS [https://www.google.com/search?sxsrf=ALeKk026QG9BbsZl0rNsBS9KmerMgczY_w%3A1602863734253&source=hp&ei=dsKJX6q8DJDYsAXHkpG4Cw&q=is+NST+thread+compatible+with+NPS+thread&btnK=Google+Search&oq=how+to+configure+nvidia+geforce+gtx+1650+super+on+linux+mint&gs_lcp=CgZwc3ktYWIQAzIFCCEQoAEyBQghEKsCMgUIIRCrAjoOCAAQ6gIQtAIQmgEQ5QI6DgguELEDEMcBEKMCEJMCOggILhDHARCvAToLCC4QsQMQxwEQowI6CAgAELEDEIMBOggILhCxAxCDAToFCAAQsQM6AggAOgQIABAKOgYIABAWEB46CAghEBYQHRAeOgcIIRAKEKABUMsQWOmzAWD8tAFoBnAAeACAAeQGiAGhS5IBDTExLjQ3LjMuMi42LTGYAQCgAQGqAQdnd3Mtd2l6sAEG&sclient=psy-ab&ved=0ahUKEwiqz4DcvLnsAhUQLKwKHUdJBLcQ4dUDCAk&uact=5]. Compatible with NPT [https://rawhidefirehose.com/blog/guide-fire-hose-couplings-threading/#:~:text=NH%2FNST%20Threads,also%20referred%20to%20as%20NH.]. NPSH has the same threads per inch as NPT, but without taper.  [https://firehosedirect.com/blogs/expert-help/fire-hose-nh-vs-npsh#:~:text=NST%20also%20goes%20by%20the,the%20threads%20do%20not%20taper.]. Verified here [https://www.alpineskids.com/post/thread-guide]. {{check}}
*'''NPSH''' - '''national pipe straight hose''' - same as NPS [https://www.google.com/search?sxsrf=ALeKk026QG9BbsZl0rNsBS9KmerMgczY_w%3A1602863734253&source=hp&ei=dsKJX6q8DJDYsAXHkpG4Cw&q=is+NST+thread+compatible+with+NPS+thread&btnK=Google+Search&oq=how+to+configure+nvidia+geforce+gtx+1650+super+on+linux+mint&gs_lcp=CgZwc3ktYWIQAzIFCCEQoAEyBQghEKsCMgUIIRCrAjoOCAAQ6gIQtAIQmgEQ5QI6DgguELEDEMcBEKMCEJMCOggILhDHARCvAToLCC4QsQMQxwEQowI6CAgAELEDEIMBOggILhCxAxCDAToFCAAQsQM6AggAOgQIABAKOgYIABAWEB46CAghEBYQHRAeOgcIIRAKEKABUMsQWOmzAWD8tAFoBnAAeACAAeQGiAGhS5IBDTExLjQ3LjMuMi42LTGYAQCgAQGqAQdnd3Mtd2l6sAEG&sclient=psy-ab&ved=0ahUKEwiqz4DcvLnsAhUQLKwKHUdJBLcQ4dUDCAk&uact=5]. Compatible with NPT [https://rawhidefirehose.com/blog/guide-fire-hose-couplings-threading/#:~:text=NH%2FNST%20Threads,also%20referred%20to%20as%20NH.]. NPSH has the same threads per inch as NPT, but without taper.  [https://firehosedirect.com/blogs/expert-help/fire-hose-nh-vs-npsh#:~:text=NST%20also%20goes%20by%20the,the%20threads%20do%20not%20taper.]. Verified here [https://www.alpineskids.com/post/thread-guide]. {{check}}
*NPS - National Pipe Straight, same as NPT, but straight. [https://netcamcenter.nl/media/documents/NPT-vs-NPS-pipe-thread.pdf]. NPS is not used for high pressure, while NPT can be, such as hydraulics. Does this mean that NPS and GHT are the same?
*NPS - National Pipe Straight, same as NPT, but straight. [https://netcamcenter.nl/media/documents/NPT-vs-NPS-pipe-thread.pdf]. NPS is not used for high pressure, while NPT can be, such as hydraulics. Does this mean that NPS and GHT are the same?
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*UN - [https://www.thehopegroup.com/blog/advice/learn-all-about-different-types-of-threads/#:~:text=However%2C%20threads%20and%20connections%20are,BSPP%20(BSP%2C%20parallel)]
*UN - [https://www.thehopegroup.com/blog/advice/learn-all-about-different-types-of-threads/#:~:text=However%2C%20threads%20and%20connections%20are,BSPP%20(BSP%2C%20parallel)]
*SAE - with o-rings
*SAE - with o-rings
=Specifications=
*3/4" NPT is 14 threads per inch. [https://www.google.com/search?sxsrf=ALeKk026QG9BbsZl0rNsBS9KmerMgczY_w%3A1602863734253&source=hp&ei=dsKJX6q8DJDYsAXHkpG4Cw&q=threads+per+inch+for+3%2F4%22+NPT&btnK=Google+Search&oq=how+to+configure+nvidia+geforce+gtx+1650+super+on+linux+mint&gs_lcp=CgZwc3ktYWIQAzIFCCEQoAEyBQghEKsCMgUIIRCrAjoOCAAQ6gIQtAIQmgEQ5QI6DgguELEDEMcBEKMCEJMCOggILhDHARCvAToLCC4QsQMQxwEQowI6CAgAELEDEIMBOggILhCxAxCDAToFCAAQsQM6AggAOgQIABAKOgYIABAWEB46CAghEBYQHRAeOgcIIRAKEKABUMsQWOmzAWD8tAFoBnAAeACAAeQGiAGhS5IBDTExLjQ3LjMuMi42LTGYAQCgAQGqAQdnd3Mtd2l6sAEG&sclient=psy-ab&ved=0ahUKEwiqz4DcvLnsAhUQLKwKHUdJBLcQ4dUDCAk&uact=5]
*GHT has 11.5 TPI [https://www.fittings.space/technical-info/npsh-nh-nhr-fittings]


=Long List=
=Long List=
Probably hundreds exist all together.
Probably hundreds exist all together.

Latest revision as of 16:49, 19 March 2024

Short List

Summary - there is National Hose and National Pipe as the main 2 types of threads. National Pipe can be tapered or straight, while National Hose is not tapered.

  • Check.pngNational Hose (NH) = National Standard Thread (NST) = National Hose Thread (NHT). It is often referred to as “fire hose thread”. - [1]
  • GHT - garden hose Thread, Garden hose thread (GHT) is also referred to as NH. [2]. Same threads per inch as NPT, but not tapered.
  • NPSH - national pipe straight hose - same as NPS [3]. Compatible with NPT [4]. NPSH has the same threads per inch as NPT, but without taper. [5]. Verified here [6]. Check.png
  • NPS - National Pipe Straight, same as NPT, but straight. [7]. NPS is not used for high pressure, while NPT can be, such as hydraulics. Does this mean that NPS and GHT are the same?
  • NPSM - National Pipe - Straight Mechanical - closure attained by 30 degree compression fit with a swivel - [8]. Only NPT with chamfer will seal properly with NPSM - other NPT threads may not seal.
  • NPT - National Pipe - tapered
  • R, G - [9]
  • BSPP - British Pipe thread parallel
  • BSPT - British Pipe thread tapered
  • Bolt thread - fine and course
  • Metric bolt - fine and course
  • Metric pipe straight
  • Metric pipe parallel
  • UN - [10]
  • SAE - with o-rings

Specifications

  • 3/4" NPT is 14 threads per inch. [11]
  • GHT has 11.5 TPI [12]

Long List

Probably hundreds exist all together.

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