ANSI thread series designation
UN, UNC, UNF UNEF, UNS 普通UN螺纹 |
Unified Inch Screw Threads (UN and UNR Form) |
B1.1 |
Gages & Gaging for United Inch Screw Threads |
B1.2 |
|
UNJ, UNJC, UNJF, UNJEF, UNJS 航天航空螺纹 |
Unified Inch Screw Threads (UNJ Thread Form) |
B1.15 |
Screw Threads Gaging Systems for Dimensional Acceptability-inch and
Metric Screw Threads (UN, UNR, UNJ, M and MJ) |
B1.3 |
|
NC-5 HF, NC-5CSF |
Class 5 Interference-Fit Thread |
B1.12 |
M 美标美制螺纹 |
Metric Screw Threads-M profile |
B1.13M |
Gages and Gaging for Metric M Screw Threads |
B1.16M |
|
MJ美制米制航空 |
Metric Screw Threads-MJ Profile |
B1.21M |
Gages and Gaging for MJ Series Metric Screw Threads |
B1.22M |
|
UNM |
Unified Minature Screw Threads |
B1.10M |
NPT |
Pipe Threads, General Purpose |
B1.20.1 |
NPTF,
PTF-SAE Short |
Dryseal Pipe Threads |
B1.20.3 |
Gaging for Dryseal pipe Threads |
B1.20.5 |
|
ANPT |
Pipe Threads, Taper Aeronautical National Form |
SAE AS71051 |
NPSM |
American Standard Straight Pipe Threads for free-Fitting |
B1.20.1 |
NPSL |
American Standard Straight Pipe Threads for Loose-Fitting |
B1.20.1 |
NPSC |
American Standard Straight Pipe Threads in pipe Couplings |
B1.20.1 |
NPSF |
Dryseal American Fuel Internal Straight Pipe Threads |
B1.20.3 |
NPSI |
Dryseal American Intermediate Internal Straight Pipe Threads |
B1.20.3 |
NH, NPSH, NHR |
Hose Coupling Screw Threads |
B1.20.7 |
NH |
Fire Hose Connections |
NFPA 1963 |
NGT, SGT |
National Gas Taper Threads |
H28/9A |
NGO |
National Gas Outlet Threads |
H28/9A |
NGS |
National Gas Straight Threads |
H28/9A |
R, Rc, Rp (BSPT) |
British Taper Pipe Threads & Gages (BS-21 obsolete) |
ISO 7/2 |
G (BSPP) |
British Straight Pipe Threads & Gages (BS2779 obsolete) |
ISO 228-2 |
BSW, BSF |
British Parallel Screw Threads of Whitworth Form |
BS84 |
BA |
British Screw Threads |
BS 57 |
ACME |
Acme Screw Threads, General Purpose |
B1.5 |
ACME-C |
Acme Screw Threads, Centralizing |
B1.5 |
STUB ACME |
Stub Acme Screw Threads |
B1.8 |
BUTT |
Buttress inch Screw threads 7°/45° |
B1.9 |
ANSI/AMO |
Microscope Objective Threads |
B1.12 |
AWWA |
Underground Service line Valves and Fittings |
C800-84 |
DIN |
German Specifications |
|
JIS |
Japanese Industrial Standard |
|
ISO |
International Standard Organization |
Notes: (1) All Threads, Except NGO, are Right Hand Unless
Otherwise Designated. For NGO Threads, Designations RH or LH are required.