Glossary

This glossary is a work in progress.  We will be adding terms as we go...
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Termsort iconMeaningGenre
ACACAir CorpFitting Types
AIAAIAAerospace Industries AssociationStandards Authorities
ANANAir Force-Navy or Army-NavyFitting Types
ANDANDAir Force-Navy Design StandardFitting Types
ANSIANSIAmerican National Standards InstituteStandards Authorities
APIAPIAmerican Petroleum InstituteStandards Authorities
ASASAerospace StandardFitting Types
ASMEASMEAmerican Society of Mechanical EngineersStandards Authorities
ASTMASTMAmerican Society for Testing and MaterialsStandards Authorities
AWWAAWWAAmerican Water Works AssociationStandards Authorities
BABABritish Association
BallcockBallcockA float-style fill valveFitting Types
BSCBSCBritish Standard Cycle
BSFBSFBritish Standard Fine
BSPBSPBritish Standard PipeFitting Types | Thread Definitions
BSPPBSPPBritish Standard Pipe ParallelFitting Types | Thread Definitions
BSPTBSPTBritish Standard Pipe TaperFitting Types | Thread Definitions
BSWBSWBritish Standard Whitworth
DINDINDeutsches Institut für Normung (German Institute for Standardization)Standards Authorities
DNADNADeutscher Normenausschuss (German Standardisation Committee)Standards Authorities
FIPFIPFemale Iron Pipe (NPT)Thread Definitions
FPTFPTFemale Pipe Taper (NPT)Thread Definitions
GGSame as BSPPThread Definitions
GHTGHTGarden Hose ThreadFitting Types | Thread Definitions
ISOISOInternational Standards OrganizationStandards Authorities
JICJICJoint Industry CouncilFitting Types | Standards Authorities
JISJISJapanese Industrial StandardStandards Authorities
MMMetric thread designation
MIPMIPMale Iron PipeFitting Types | Thread Definitions
MPTMPTMale Pipe Taper (NPT)Fitting Types | Thread Definitions
MSMSMilitary Standard (US)
MSSMSSManufacturers Standardization Society
NACENACENational Association of Corrosion Engineers
NADINADINormenausschuss der deutschen Industrie (Standardisation Committee of German Industry)Standards Authorities
NASNASNational Aerospace StandardFitting Types
NFPANFPANational Fire Protection Association
NHNHNational HoseFitting Types | Thread Definitions
NPSNPSNational Pipe StraightFitting Types | Thread Definitions
NPSHNPSHNational Pipe Straight HoseThread Definitions
NPSLNPSLNational Pipe Straight LocknutThread Definitions
NPSMNPSMNational Pipe Straight MechanicalThread Definitions
NPTNPTNational Pipe TaperFitting Types | Thread Definitions
NPTRNPTRNational Pipe Taper RailingThread Definitions
NSTNSTNational Standard ThreadFitting Types | Thread Definitions
RRSame as BSPTThread Definitions
RcSame as BSPT, RFitting Types | Thread Definitions
RpSame as BSPP, GFitting Types | Thread Definitions
SAESAESociety of Automotive EngineersStandards Authorities
StorzStorzSexless fire hose couplingFitting Types
UNUNUnified NationalThread Definitions
UNCUNCUnified National Coarse
UNEFUNEFUnified National Extra Fine
UNFUNFUnified National Fine
UNRUNRUnified National Radius
UNSUNSUnified National Special
UTSUTSUnified Thread Standard

 
Pipe Size
Pitch  (Threads/Inch)
NPT/NPS
BSP
 1/16"
27
---
 1/8"
27
28
 1/4"
18
19
 3/8"
18
19
 1/2"
14
14
 5/8"
---
14

 
Pipe Size
Pitch  (Threads/Inch)
NPT/NPS
BSP
 3/4"
14
14
1"
11 1/2
11
1 1/4"
11 1/2
11
1 1/2"
11 1/2
11
2"
11 1/2
11
2 1/2"
8
11

 
Pipe Size
Pitch  (Threads/Inch)
NPT/NPS
BSP
3"
8
11
3 1/2"
8
11
4"
8
11
5"
8
11
6"
8
11
8"
8
---