UN, UNC, UNF UNEF, UNS | Unified Inch Screw Threads (UN and UNR Form) | B1.1 |
Gages & Gaging for United Inch Screw Threads | B1.2 |
UNJ, UNJC, UNJF, UNJEF, UNJS | 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 | Metric Screw Threads-M profile | B1.13M |
Gages and Gaging for Metric M Screw Threads | B1.16M |
MJ | 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 Symbol ANPT Design and Inspection Standard | SAE AS71051 |
NPSM | American Standard Straight Pipe Threads for free-Fitting Mechanical Joints for Fixtures | B1.20.1 |
NPSL | American Standard Straight Pipe Threads for Loose-Fitting Mechanical Joints with Locknut | 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 |