Glossary

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

 
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
---